The Ultimate Guide
to the Magic of Rice-Derived Skincare

Part 2: The History of Beauty in Japan

In ancient times, there was a long period when Japan derived much of it's cultural inspiration from the empire of China.

Then beginning with the Heian period in 794 AD, Japan began to evolve away from Chinese influences and explore and develop its own unique culture, focusing on the Heian aristocracy.

Beauty in Japan started to shift from China's more fancy and extravagant style to a more understated elegance that relied on natural resources to enhance and strengthen natural assets.

Ancient Japanese Beauty

Unlocking the Secrets Behind Your Favorite Beauty Influencers' Radiant Glow

Traditional painting of a Heian noble woman

In the classic book, Tales of Genji, the beauty standards of the time required women to have long, glossy hair that cascaded and glistened like their kimono made of silk.

But how did they maintain such lustrous locks without the help of modern-day salons?

The secret was rice water!

The savvy Heian court ladies knew the secret sauce for fabulous hair was the magical rice water left over from washing rice, which they called Yu-Su-Ru. They rinsed or combed the nutrient-packed water through their locks to get irresistibly silky and strong tresses.

Cuz it's all about that hair flip, amirite?

When it came to skincare, Japanese women were ahead of their time too, focusing on maintaining healthy skin and radiance. In a time without dermatologists, the Japanese were all about prevention over cure.

Even with makeup, they preferred a light touch to enhance their beauty. They believed that when the skin is properly nourished, you only need makeup to accentuate your features rather than mask blemishes.

In fact, their interpretation of "foundation" differed from the Western reference to liquid powder. To them, “foundation” refers to the natural health and radiance of bare skin, which sets the foundation for a flawless look, with or without makeup.

The Japanese believe when the skin is properly nourished, you only need makeup to accentuate your features rather than mask blemishes.

As a result, they were particular about their skincare routine and placed great importance on the first step of their routine - cleansing. For the Japanese, this crucial step was much more than about removing dirt and other impurities.

It was a crucial part of the skincare ritual that involved polishing, smoothing, softening, and brightening the skin. To achieve these benefits, they relied on ingredients that could deliver results.

People in Heian period used rice bran powder sachet to cleanse, polish, and brighten skin.

One of the ingredients they used was rice bran powder (米ぬか komenuka) in a sachet to cleanse the body. This powerful combination not only removed dirt and grime but also improved skin texture and brightened the skin.

The ancient Japanese had a holistic approach to beauty. Cleansing wasn't just about removing dirt, but an opportunity to imparting nutrients to the skin. 

Even from the Edo period they knew the importance of not only using products to clean themselves but to look for ingredients that had added skincare benefits.

Discover all the rice products that the Japanese use for their skin, hair, and general health!

Discover the Ancient Japanese Secret to Flawless Skin with Sake

How Japanese Minimalism Can Help Simplify Your Skincare Routine

Komenuka Spa: The Revitalizing Power of Rice Bran Powder for Radiant Skin

Rice Bran Oil: Non-Comedogenic Oil for Soft, Moisturized Skin

The research into Sake's skin benefits

How and when were the skincare benefits of Sake scientifically validated?

Ok, so fermented rice water has incredible benefits for the skin! You know it. I know it. And the women of ancient Japan certainly knew it.

But what did the science say? Because without the scientific evidence behind the purported benefits, we're just splashing our faces with ancient beauty gossip.

As mentioned earlier, the effectiveness of Sake for skincare has been widely recognized in Japan for centuries.

For instance, in a study published in 2010 on the skin health effects of Sake, researchers said "Japanese people have experienced that ingestion of sake has positive effects on the skin condition, and women living in the northern region of Japan, where high amounts of sake are consumed, have a better complexion than those living in other areas of Japan."

So when were the skincare benefits of Sake first verified through scientific means? The fascinating journey of the discovery began back in the 1970s, as Japan's booming economy fueled a growing desire for innovative skincare solutions.

Japanese people have experienced that ingestion of sake has positive effects on the skin condition, and women living in the northern region of Japan, where high amounts of sake are consumed, have a better complexion than those living in other areas of Japan.

It was during this exciting time of exploration that a team of scientists, commissioned by the now-renowned brand SK-II, went on a mission to investigate the age-old wisdom surrounding the Toji’s inexplicably youthful hands and Sake's potential to rejuvenate and nourish the skin.

¹ Harada, Naoaki & Fu, Yukiko & Kurihara, Hiroki & Nakagata, Naomi & Okajima, Kenji. (2010). Effects of Topical Application of α-D-Glucosylglycerol on Dermal Levels of Insulin-Like Growth Factor-I in Mice and on Facial Skin Elasticity in Humans. Bioscience, biotechnology, and biochemistry. 74. 759-65. 10.1271/bbb.90797.

Part 3: The Toji's hands and the birth of SK-II

How the youthful hands of old Sake brewers sparked the birth of a legacy skincare brand

Contrary to the popular narrative that's repeated across many blogs, the discovery of the Sake brewer's radiant hands and the benefits of fermented rice water was no accident - although it certainly makes for a quirky story! In actuality, the knowledge of the Sake brewer's hands had been well-established knowledge in Japan for thousands of years.

Here's how the scientific discovery of the benefits of Sake and its fermented rice riches really came about:

The Toji (蔵人) are master Sake brewers in Japan, and they’re highly skilled craftsmen with extensive knowledge and experience in sake production. It takes them many years to perfect their expertise and intuition, which is why they're typically older individuals with a rich history in the sake industry.

The sugidama or "cedar ball," is a traditional symbol found at the entrance of many sake breweries in Japan. It signifies that fresh sake is available for purchase.

One peculiar thing about the Toji that has long captured people's attention and turned into a kind of legend, is that their hands always appear radiant and inexplicably youthful, in sharp contrast with their natural aged face.

As it happens, the Toji's work involves overseeing the entire Sake brewing process, which requires them to constantly immerse their hands in the fermenting rice water.

This led to the belief in Japan that the radiant appearance of Tojis' hands was due to the daily exposure to the nutrient-rich Sake. Yet this well-established Japanese lore remained unverified throughout the centuries - that is, until the 70s when technological advances in Japan made it possible to scientifically confirm the truth about Sake. 

A Toji (master sake brewer) overseeing the fermentation progress at the moromi stage of Sake brewing.

So what happened?

Well, in the 70s, as Japan's economy was skyrocketing, women were on the hunt for ways to preserve their beauty and turn back the clock.

SK-II, at that time a budding skincare brand, recruited a team of Japanese scientists and tasked them with the quest to find the elusive "fountain of youth."

The team of scientists searched high and low to find this secret ingredient. Finally, they recalled the legend of the Toji's radiant hands.

They decided to find out once and for all what exactly in Sake was giving the Toji their dewy skin. The researchers conducted a rigorous investigation, which led to the discovery of a blend of skin-nourishing compounds in Sake.

SK-II extracted the compounds, which they trademarked as Pitera. This remarkable Sake-derived elixir contained over 50 micro-nutrients that held the key to SK-II's transformative effects on the skin. Today these compounds have even been adopted with much fanfare in K-beauty and Western beauty products. 

It was known that the Toji maintained their youthful, dewy hands due to their daily exposure to the nutrient-dense, fermenting rice while working on the sake brewing process.

The groundbreaking research not only confirmed the long-held beliefs in Sake's skincare benefits but also unlocked a new understanding of Sake's ability to enhance and preserve the skin's youthful radiance.

This incredible discovery was a game-changer in the beauty industry, and it propelled SK-II and its Pitera-packed lotions and serums to fame.

It also cemented Sake as a powerful, time-tested ingredient that to this very day continues to keep the likes of Cate Blanchett, Chloe Grace Moretz, and Simone Biles looking stunning!

SK-II's fanbase boasts the likes of Cate Blanchett, Chloe Moretz, and Simone Biles!

Part 4: How is Sake made?

Let's dive into how real "fermented rice water" is made. There's much more to it than leaving a mason jar of rice water on your counter and hoping for the best.

The making of Sake

Sake, a traditional Japanese alcoholic beverage, is made by fermenting rice with special Japanese mold called Koji and Sake yeasts like Saccharomyces cerevisiae and Galactomyces.

Sake's unique brewing process, known as the Multiple Parallel Fermentation process, sets it apart from  your typical beer or wine.

Multiple parallel fermentation is a two-step process that occurs simultaneously, involving saccharification (conversion of starch into sugar) and fermentation (conversion of sugar into alcohol).

Here's a step-by-step explanation of the Sake fermentation and brewing process:

1. Rice, rice baby

High quality fermented rice starts with high quality rice. Sake's rice quality stems from Japan's crisp winters, natural mountain water, and the unwavering dedication of Japanese farmers to maintaining high rice cultivation standards.

2. Steam it up

Next, the rice gets a spa day. The harvested rice is first washed and soaked rice, then steamed. Steaming the rice gelatinizes the starch, making it more accessible to the enzymes during the saccharification process.

3. Koji magic

After it's steamed, a portion of the rice gets dusted with Koji mold (Aspergillus oryzae), whose enzymes turn rice starch into sugar for fermentation. It's then incubated in a temperature and humidity-controlled room for 36-48 hours.

4. Yeasty beasties

Next the koji rice is mixed with blend of Sake's yeasts. This mixture, called shubo or moto, ferments for a week or two as the koji enzymes break down starches into sugar, and the yeasts turn that sugar into booze and bubbles.

5. Moromi mashup

Now the shubo is combined with more koji, steamed rice, and water until it builds up to a huge tub of main mash called moromi. Over the next month or so, this main mash continues to ferment under the watchful eye of the Toji.

6. Press, filter, and pasteurize

Following the moromi bash, the liquid is separated from the fermented rice solids through pressing. The liquid, now known as Sake, is filtered and pasteurized. The remaining fermented rice mash is called Sake Kasu.

7. Aging and Bottling

Sake is aged for several months or even years to let its flavor profile develop and mature. After aging, Sake is bottled and ready for consumption. Kanpai!

8. Sake Kasu Gem

Meanwhile, Sake Kasu is collected from the presser to be upcycled and sold for its major culinary, health, and skincare benefits. It's an ingenious example of Japanese resourcefulness and sustainability of the Sake brewing process.

Here's a cool video tour that takes you through the production of handcraft Sake in Japan.

During the Sake fermentation and brewing process, there are several key players, most notably Koji mold (Aspergillus oryzae), Sake yeasts, such as Saccharomyces cerivisae and Galactomyces.

The MVP of Sake: Koji (Aspergillus oryzae) 

Introducing Koji, the National Mold of Japan, and why it's so important in Sake brewing

Also known as Aspergillus oryzae, Koji is a special mold that's absolutely instrumental in the making of Sake "fermented rice water" and is what sets Sake so uniquely apart from other alcoholic beverages.

Mold...?

It may sound odd to think a food or skincare ingredient as being made through the process of fermentation by mold. But like the Penicillin that's used to make blue cheese, Koji is a super beneficial mold.

A super closeup shot of Koji mold (scientific term: Aspergillus oryzae).

The backstory of Koji's development in Japan is truly fascinating. Koji originally began as a wild fungus known as Aspergillus oryzae. Over a 1300-year cultivation process, Japanese Koji specialists domesticated this fungus. They selectively bred it to ensure it was safe (non-pathogenic) and useful for fermenting food, a key element in Japanese cuisine.

At a certain point in history, there was even an intense conflict known as the Koji Battle of Bunn-an. It was a throw down between the Koji cultivators and the ruling Muromachi government in Japan at that time.

Imagine fighting over... mold.

I know! It sounds crazy. But that's how important Koji was and still is to the Japanese.

In fact, Koji mold is so invaluable to the diet and lifestyle of the Japanese, that it has been named the National Mold of Japan.¹

Today the skill of producing and storing Koji is a highly protected skill that's passed on through family business and only a dozen or so bonafide Japanese Koji purveyors exist today.

A closeup shot of Japanese rice grains that have been carefully fermented with Koji mold.

Koji is responsible for many of the fermented foods of Japan, such as sake, vinegar, miso, rice, barley, and more.

Japanese foods fermented with Koji are even said to be the reason Japan has long had the highest average lifespans in the world. (Although its ranking has slipped a bit after the Western diet took over, it still remains one of the highest.).

In Koji fermentation, the Koji converts rice starch into sugar, a necessary ingredient for fermentation into alcohol. During this process, Koji also creates the beneficial skincare compounds, such as enzymes, ceramides, probiotics, kojic acid, glutamic acid, oligosaccharides, ethyl-α-d-glucoside, ferulic acid, ergothioneine, pyroglutamyl leucine, polyamines, peptides, beta-glucan, biotin, citric acid, and more.¹

Japanese foods fermented with Koji are even said to be the reason Japan has long had the highest average lifespans in the world.

Not only that, Koji's fermentation process also breaks down rice nutrients into smaller, more easily absorbed molecules that can penetrate deeper into the skin.

Yeah, Koji is a bit of an overachiever! But don't worry, we'll break it down for you below and talk about the insane benefits of these compounds.

And the trusty sidekicks: Saccharomyces and Galactomyces

After Koji has done the hard work of saccharifying rice starch, it passes the baton to a blend of special Sake yeasts, including Saccharomyces cerevisiae and Galactomyces. Together, the yeasts convert the sugar into booze and deepen the flavor profile of Sake. Meanwhile, additional skin-loving compounds are generated in the process, including Galactomyces ferment filtrate, niacinamide, peptides, and antioxidants.

But wait... there's more!

Here is where we channel our inner Billy Mays for the big reveal, an awesome aspect of Sake brewing that will surprise you!

Given the abundance of beneficial qualities, it's not surprising that the Japanese have been incorporating Sake into their skincare regimen for centuries. This traditional practice includes indulging in Sake-infused onsen (hot spring) baths or utilizing Sake as a natural skin moisturizer and toner.

Onsen bath overlooking Fuji Mountain.

But delve deeper into the world of Sake and you'll find an ingredient that's even more amazing for the skin (and health). This ingredient is such a hidden gem that it's still unknown to the world outside of Japan, but this skincare cult favorite has long enjoyed a strong following among skincare gurus in Japan.

It's worth noting that most blogs in the West that talk about Galactomyces, fermented rice water, or Sake in skincare aren't even aware of this fascinating ingredient. Our knowledge of this secret gem is simply a result of extensive research, tracing the trend of "fermented rice water" back to its true origins.

The secret lies not in the Sake itself, but in what's left behind after its production - the Sake Kasu.

¹ Kitagaki H. Medical Application of Substances Derived from Non-Pathogenic Fungi Aspergillus oryzae and A. luchuensis-Containing Koji. J Fungi (Basel). 2021 Mar 24;7(4):243. doi: 10.3390/jof7040243. PMID: 33804991; PMCID: PMC8063943.
² Gaspar, L.R. et al. (November 2008) Evaluation of dermatological effects of cosmetic formulations containing Saccharomyces cerevisiae extract and vitamins. Food and Chemical Toxicology

Part 5: The Hidden Gem: Sake Kasu

Sake Kasu, also referred to as Sake lees or Sake cake, is a byproduct of the sake-making process. It's the fermented rice mash that's left behind after the Sake, the liquid, has been extracted through pressing. It's similar to wine lees, the pulpy grape remnants following red wine extraction.

Sake Kasu, or Sake lees, is the compacted, fermented rice mash that Sake is pressed from.

Because Sake lees is the fermented rice solids of Sake, it contains a more concentrated form of all the same skin and health nutrients found in Sake. This includes all the amino acids, enzymes, vitamins, peptides, mentioned above and described in depth further down below.

Sake Kasu holds a special place in Japanese cooking, not just for its distinct flavor, but also for its remarkable health advantages. As a rich source of probiotics, vitamins, amino acids, and peptides, it contributes to improved digestion, muscle repair, and overall well-being and longevity.

Japanese sweet Sake (fermented rice malt) made with Sake lees.

It has a unique flavor profile, which can be described as mildly sweet, umami, nutty, and fruity, with a subtle hint of alcohol. If you're a fan of cooking with beer or whiskey, definitely consider giving Sake lees (or Sake if you can't find Sake lees) a try.

In addition to its culinary uses, Sake Lees has been a popular natural skincare ingredient used by Japanese skincare gurus to improve the skin's texture, reduce the appearance of fine lines and wrinkles, and increase hydration.

Japanese mommy beauty blogger Rie @Maquia demonstrates how she uses Sake Kasu as a face pack.
(We share more details about her experience and results below!)

The nutrients in Sake Kasu help to nourish and protect the skin from environmental stressors, while its natural enzymes gently exfoliate and brighten the complexion.

In Japan, Sake Kasu has been incorporated in a variety of skincare products, such as masks, lotions, and creams, to help improve the overall health and appearance of the skin.

Sake Kasu (or fermented rice mash) can be found in a variety of skincare products in Japan.

Part 6: What are the benefits of fermented rice water?

Are you ready for some serious knowledge bombs? We're about to dive into the part you've been waiting for - the real deal on the skincare benefits of fermented rice.

We dug through a ton of research to compile all the scientfitic evidence on the benefits of Sake and Sake Lees. It was a lot of technical research, but we managed to strike a balance between being informative and still easy to understand. It's the most comprehensive breakdown of fermented rice water ever, so buckle up!

Now, let's get down to brass tacks and answer some of the burning questions you're probably dying to know.

What are all the proven benefits of fermented rice water for your skin?

Can fermented rice water be used on the face?

Does fermented rice water grow hair?

Boost skin
hydration

Strengthen
skin barrier

Boost collagen
& elasticity

Lighten spots
& brighten

Reduce lines
and wrinkles

Exfoliate & boost cell turnover

Control sebum
& unclog pores

Smooth texture,
soften and tone

Reverse UV
damage

Soothe skin
inflammations

Helps boost and retain skin hydration and balance overall complexion

The Skinopsis

A glowing, smooth complexion is all about striking the right balance between lipids and water. But as we age, our skin tends to lose these vital components, leaving us with a dull appearance.

While we can slick it up in lotion to replenish the lipids, simply splashing on some H2O for skin moisture just won't cut it. All that moisture quickly evaporates! That's where humectants come in. They're like little sponges that draw moisture from the air into your skin and hold it in.

Sake naturally contains a bunch of humectants. That's why it's been used as a moisturizer in Japan for centuries. It's said that a Sake Bath can boost circulation (essential for nutrient delivery) and promote soft, smooth, and radiant skin.

Spongebob - the humectant that lives in a pineapple under the sea.

What compounds in Sake Kasu aid in skin moisture retention?

Galactomyces, Glutamic acid, Oligosaccharides, Pantothenic acid, Saccharomyces, β-glucan, Oligosaccharides, Biotin, glucosylceramide (also found in konjac), and ethyl α-d-glucoside (a-EG).

The Research

In a 2021 study published to the Journal of Fungi, researchers found that glycosylceramide contained in koji, has the potential to improve Transepidermal Water Loss (TEWL).¹

In a study published in Skin Pharmacology and Physiology in 1997, researchers noted that ethyl α-d-glucoside (a-EG) found in sake is known to help with transepidermal water loss, and has skin moisturizing effects. From the study, researchers noted that sake "lowered the transepidermal water loss levels compared to the controls on the 3rd day after UVB radiation." ²

In a 2018 study published in Foods, it was found that Sake Lees led to improvements in the moisture content of cheek stratum corneum, skin viscoelasticity, and skin texture.³

https://www.jstage.jst.go.jp/article/jbrewsocjapan1988/94/4/94_4_274/_pdf

¹ Kitagaki H. Medical Application of Substances Derived from Non-Pathogenic Fungi Aspergillus oryzae and A. luchuensis-Containing Koji. J Fungi (Basel). 2021 Mar 24;7(4):243. doi: 10.3390/jof7040243. PMID: 33804991; PMCID: PMC8063943.
² Kitamura N, Ota Y, Haratake A, Ikemoto T, Tanno O, Horikoshi T. Effects of ethyl alpha-D-glucoside on skin barrier disruption. Skin Pharmacol. 1997;10(3):153-9. doi: 10.1159/000211480. PMID: 9287396.
³ Maeda K, Ogino Y, Nakamura A, Nakata K, Kitagawa M, Ito S. Identification of Rice Koji Extract Components that Increase β-Glucocerebrosidase Levels in Human Epidermal Keratinocytes. Foods. 2018 Jun 18;7(6):94. doi: 10.3390/foods7060094. PMID: 29912147; PMCID: PMC6025003.

Repairs your skin barrier function

The Skinopsis

Your skin's barrier function is crucial for maintaining healthy, youthful-looking skin. This protective layer, made of intercellular lipids and corneocytes, is super important for several reasons.

It fights off external irritants and bacteria, keeps your skin's pH levels in check for happy cell growth and repair, and preserves a supple texture to keep those pesky signs of aging at bay.

If your skin barrier gets disrupted (lowered lipid content), it can leave you with dry skin, irritation, inflammation, and increased sensitivity.

What compounds in Sake Kasu aid in repairing and strengthening skin barrier function?

β-glucan, Lysophosphatidic acid, Oligosaccharides, ethyl alpha-D-glucoside (alpha-EG), glycosylceramide, ethyl R-D-glucoside, Niacin, Pantothenic Acid, Sphingolipids, and Galactomyces.

The Research

In a 2005 study published in the Journal of Agricultural and Food Chemistry, researchers found that topical application of Sake concentrate effectively reduced UV damage to the skin barrier, thanks to a unique compound called called ethyl R-D-glucoside.

Researchers even conducted the same experiment using red wine concentrate and beer concentrate to confirm the unique effects of Sake. They noted that "similar effects were not found with wine concentrate and beer concentrate."¹

In a study published in Bioscience, Biotechnology, and Biochemistry in 2007, researchers found that Sake significantly increased intercellular lipid content in an aged epidermis. Specifically, a compound in Sake called ethyl alpha-D-glucoside (alpha-EG) in Sake can repair the skin barrier by improving the intercellular lipid content.²

In study published to Fermentation in 2019, researchers found that the glycosylceramide in koji increased the content of ceramide in the keratinocytes, or the skin cells on the outer layer of the skin, strengthening the skin barrier and improving overall skin health.³

In the study published to Skin Pharmacology and Physiology in 1997, researchers were able to conclude that alpha-ethylglucoside (a-EG) in Sake enhanced the differentiation of keratinocytes, which might be related to reduced barrier disruption by UVB.⁴

¹ Masato Hirotsune, Akinori Haratake, Aya Komiya, Jun Sugita, Toru Tachihara, Tsuyoshi Komai, Kazuhisa Hizume, Kenji Ozeki, and Takeshi Ikemoto (January 2005) Effect of ingested concentrate and components of sake on epidermal permeability barrier disruption by uvb irradiation. Journal of Agricultural and Food Chemistry 2005, 53, 4, 948–952.
² Nakahara M, Mishima T, Hayakawa T. Effect of a sake concentrate on the epidermis of aged mice and confirmation of ethyl alpha-D-glucoside as its active component. Biosci Biotechnol Biochem. 2007 Feb;71(2):427-34. doi: 10.1271/bbb.60489. Epub 2007 Feb 7. PMID: 17284832.
³ Miyagawa, & Fujikawa, & Nagadome, & Kohama, & Ogami, & Kitamura, & Kitagaki,. (2019). Glycosylceramides Purified from the Japanese Traditional Non-Pathogenic Fungus Aspergillus and Koji Increase the Expression of Genes Involved in Tight Junctions and Ceramide Delivery in Normal Human Epidermal Keratinocytes. Fermentation. 5. 43. 10.3390/fermentation5020043.
⁴ Kitamura N, Ota Y, Haratake A, Ikemoto T, Tanno O, Horikoshi T. Effects of ethyl alpha-D-glucoside on skin barrier disruption. Skin Pharmacol. 1997;10(3):153-9. doi: 10.1159/000211480. PMID: 9287396.

Promotes collagen production and boosts skin elasticity, firmness

The Skinopsis

Skin elasticity and firmness are crucial for a youthful and healthy appearance, but as we age, our skin's natural ability to produce collagen and elastin decreases, leading to sagging, fine lines, and wrinkles.

Fibroblast skin cells, the most common type of cell in the skin's connective tissue, play a vital role in maintaining skin elasticity and firmness by producing collagen, elastin, and other fibers that provide structural support. They also regulate repair, regeneration, wound healing, and scar formation processes.

However, with age, fibroblasts become less effective and produce less collagen, resulting in a less firm and more wrinkled appearance. Fortunately, sake contains compounds that can stimulate fibroblasts, helping to maintain and improve skin elasticity, thereby delaying visible signs of aging.

Fun fact: The Japanese have a term for that springy, bouncy, and elastic skin texture we all adore – "mochi hada" (or "mochi skin").

It's inspired by the soft, smooth, and plump consistency of Japanese mochi rice cakes, capturing the essence of a truly radiant and youthful complexion.

What compounds in Sake Kasu help promote skin elasticity and firmness?

alpha-D-gulcosylglycerol (a-GG), Proline, Glutamic acid, Pantothenic acid, Niacin, β-glucan, ethyl α-d-glucoside (α-EG)

The Research

One of the compounds is called alpha-D-glucosylglycerol (aka a-GG or just GG) that's found in Japanese traditional foods like Sake. Studies found that when you apply GG topically, it can improve the elasticity of our facial skin.

In a study published in Bioscience Biotechnology and Biochemistry in 2010, reseachers found that when a-GG was applied to the cheek of women volunteers, their cheek-skin elasticity after just 14 days of daily application.

The researchers also observed that through sensory neuron stimulation, a-GG promotes the production of the body's growth factor (IGF-I), which is important for maintaining skin cell repair and regeneration, thereby increasing skin elasticity.¹

In a study published to Bioscience, Biotechnology, and Biochemistry in 2017, a compound called ethyl α-d-glucoside (α-EG) contained in Sake was found to increase human dermal fibroblasts by 121.0%. Fibroblasts are cells that help make the basic structure of our skin. When these cells become less active, our skin's structure can weaken.

The same study also found that α-EG increased collagen production by 159.6%.²

In the 2018 study published in Foods, it was found that rice koji, also called Aspergillus oryzae and the key fermentation ingredient that's unique to Sake production led to improvements in the skin viscoelasticity, and skin texture.³

¹ Harada N, Zhao J, Kurihara H, Nakagata N, Okajima K. Effects of topical application of alpha-D-glucosylglycerol on dermal levels of insulin-like growth factor-i in mice and on facial skin elasticity in humans. Biosci Biotechnol Biochem. 2010;74(4):759-65. doi: 10.1271/bbb.90797. Epub 2010 Apr 7. PMID: 20378988.
² Takayuki Bogaki, Keiichi Mitani, Yuki Oura & Kenji Ozeki (2017) Effects of ethyl-α-d-glucoside on human dermal fibroblasts, Bioscience, Biotechnology, and Biochemistry, 81:9, 1706-1711, DOI: 10.1080/09168451.2017.1353400
³ Maeda K, Ogino Y, Nakamura A, Nakata K, Kitagawa M, Ito S. Identification of Rice Koji Extract Components that Increase β-Glucocerebrosidase Levels in Human Epidermal Keratinocytes. Foods. 2018 Jun 18;7(6):94. doi: 10.3390/foods7060094. PMID: 29912147; PMCID: PMC6025003.

Lightens hyperpigmentation

The Skinopsis

Melanin is a wonderful thing. It's gives us our gorgeous skin, hair, and eye color. It can even protect us from UV rays!

It's produced by a key enzyme in our body called, tyrosinase. And that's cool. But sometimes tyrosinase can get a bit carried away...

When tyrosinase is triggered by factors like UV damage, hormones, or inflammation, it starts producing too much melanin and lead to hyperpigmentation. Hyperpigmentation does not define your overall skin tone. Rather represents an uneven distribution of melanin in certain areas of your skin. For example, age spots, sun spots, acne scars, and melasma.

Scientists have discovered several compounds in Sake that stop tyrosinase from going overboard with producing unwanted melanin.

Sake to tyrosinase, probably.

What compounds in Sake Lees help promote skin elasticity and firmness?

Kojic acid, p-Courmaric acid (also found in ginseng), triolein, trilinolein, Vitamin E, free linoleic acid, arbutin, glutathione, leucine, ferulic acid

The Research

In a study published in Journal of Agricultural and Food Chemistry in 2006, researchers showed that "triacylglycerols, present in sake lees, inhibit tyrosinase catalytic activity," making sake lees an effective and safe compound to for stopping hyperpigmentation.¹

Their findings were replicated and confirmed in another study published in Microbial Production in 2014.²

In a separate study conducted by AmorePacific's Skin Research Institute, researchers focused on the effects of Kojic acid on Tyrosinase and melanin production.

They found that Sake extract treatment significantly inhibited melanin production and substantially decreased tyrosinase activity.

They also found that sake extract improved skin brightness significantly within 7 days! Through both in vitro and in vivo experiments, the researchers concluded that sake extract is an effective anti-melanogenic ingredient and can be used to improve skin hyperpigmentation.³

Finally, in a study called Inhibition of Tyrosinase Activity by Sake Lee Extract in 2021, researchers found that several compounds found in Sake Lees were effective in blocking tyrosinase activity. They include arbutin, which is often referred to as a natural and safer alternative to hydroquinone, leucine, ferulic acid, as well as glutathione, which is a tripeptide of glutamic acid, cysteine, and glycine.⁴

¹ Jeon HJ, Noda M, Maruyama M, Matoba Y, Kumagai T, Sugiyama M. Identification and kinetic study of tyrosinase inhibitors found in sake lees. J Agric Food Chem. 2006 Dec 27;54(26):9827-33. doi: 10.1021/jf062315p. PMID: 17177508.
² Matoba, Yasuyuki & Sugiyama, Masanori. (2014). Structure of Tyrosinase and Its Inhibitor from Sake Lees. Microbial Production. 10.1007/978-4-431-54607-8_21.
³ Hwang JA, Goh MJ, Kim EJ, Lee MR, Park NH, Na YJ, Cho JC, Lee HK. Identification of sake extract as a new anti-melanogenic ingredient by in vitro and clinical trials. Skin Research Institute, AMOREPACIFIC R&D Center. Nat Prod Commun. 2013 Nov;8(11):1605-8. PMID: 24427952.
4 Takaoka M, Kuba M, Saitou M, Sugimoto W, Motono Y. Inhibition of Tyrosinase Activity by Sake Lee Extract. 日本香粧品学会誌  Vol. 45, No. 2, pp. 93–96 （2021）

Reduces fine lines and wrinkles

The Skinopsis

Ah, fine lines and wrinkles—nature's way of reminding us that we're only getting better with age. They can be caused by many factors such as UV exposure, inflammation, sugar, hormones, pollution, and stress.

These factors can create free radicals that break down collagen and damage our skin cells, causing them to rebuild with a weaker structure. As time ticks by, our skin starts to lose its elasticity and fine lines and wrinkles start to form.

But fear not, we do have some control over our skin's future.

By limiting our exposure to UV rays, environmental stressors, and making mindful lifestyle choices, we can help ensure graceful aging.

Interestingly, scientists have discovered that Sake not only has compounds that boost collagen production but also neutralize free radicals and inhibit MMPs, further assisting us in aging gracefully and maintaining a youthful appearance.

So if we have to age, let's age like fine wine, fine rice wine - yeah, you knew that was coming.

Literally! You literally get better with rice wine!

What compounds in Sake Kasu help to reduce the appearance of fine lines and wrinkles and promote graceful aging?

Gamma-aminobutyric acid (GABA), Proline, α-EG, α-GG, Ferulic Acid, Galactomyces, Succinic acid, Thiamin, Cysteine

The Research

Gamma-aminobutyric acid (GABA), a compound that is naturally found in abundance in Sake and Sake Kasu, is a versatile amino acid with many benefits for the body, such as increasing Hyaluronic acid and collagen in the skin. It is a popular ingredient in skincare products because of its known to act as a natural wrinkle relaxer.¹

Its effect has even been compared to that of Botox, making it a go-to for those who want to avoid more invasive procedures. It's said that using it continuously for one week reduced appearance of fine lines, resurfaced wrinkles, and improved skin elasticity.

In another study published to the Journal of Bioscience and Bioengineering in 2009, scientists observed that Sake increased expression of procollagen (a precursor of collagen) and laminin-5 (an important component in dermal fibroblasts).

Additionally, the researchers found that Sake significantly reduced the expression MMPs and inflammatory cytokine TNF-α, which are both triggered by UV exposure and extensively breakdown collagen. 

The researchers noted that Sake's ability to stimulate collagen production while inhibiting collagen-destroying enzymes without causing irritation makes it an effective anti-aging ingredient.²

1 Sahab NRM, Subroto E, Balia RL, Utama GL. γ-Aminobutyric acid found in fermented foods and beverages: current trends. Heliyon. 2020 Nov 16;6(11):e05526. doi: 10.1016/j.heliyon.2020.e05526. PMID: 33251370; PMCID: PMC7680766.
2 Seo MY, Chung SY, Choi WK, Seo YK, Jung SH, Park JM, Seo MJ, Park JK, Kim JW, Park CS. Anti-aging effect of rice wine in cultured human fibroblasts and keratinocytes. J Biosci Bioeng. 2009 Mar;107(3):266-71. doi: 10.1016/j.jbiosc.2008.11.016. PMID: 19269590.

Exfoliates skin, promotes cell renewal, and boosts glow

Promote new cell turnover and renewal, in the process eliminating dullness and clearing the way for brighter complexion and boosted glow.

The Skinopsis

Whether you prefer physical exfoliation or chemical exfoliation, the end goal is to improve our skin texture, remove dead skin cells, brighten our complexion, unclog pores, promote cell turnover, and help our skincare products absorb better.

Physical exfoliation involves manually massaging an exfoliating agent like scrubs to slough off dead skin cells. But it can be abrasive and lead to transepidermal water loss and skin irritation.

Chemical exfoliation uses acids like AHAs or enzymes to break down and remove dead skin cells. It provides a deeper pore cleanse, is gentler on the skin (with the right concentration), and offers more consistent results, since the acids and enzymes work uniformly on the face.

Sake Lees contains many AHAs including Malic, Glycolic, and Lactic acids, and the enzyme protease, which work together to provide a gentle exfoliation.

Ah, St. Ives Apricot Scrub - the gritty rite of passage for many of us.

What compounds in Sake Kasu help promote exfoliation and skin cell turnover and renewal?

Protease, Malic acid, Glycolic acid, Lactic acid, Citric acid, Niacin, Biotin, Pantothenic acid, Thiamin

The Research

In a study published to Cosmetics in 2022, researchers noted proteases, which is found in Sake, can improve the skin’s appearance through exfoliation and increase absorption of moisture and other ingredients. The study even suggests that proteases is a safer enzyme for exfoliation since the more widely used bromelain (from pineapples) and papain (from papaya) have been linked to allergic reactions.

In another study published to the Journal of the American Academy of Dermatology in 2021, it was noted that in cleansers and creams with low concentrations of Alpha Hydroxyacids (AHAs) like the Malic acid, Lactic acid, Citric acid, Glycolic acid found in Sake, "meaningful increases in cell turnover rate were noted with consumer perceivable exfoliation benefits."

More specifically, users observed skin cell turnover benefits including: skin is lightly exfoliated (94%); skin feels renewed (100%); dry, dull skin is revitalized (97%); and skin texture is smoother.²

¹ Ioannou, E.; Labrou, N.E. Development of Enzyme-Based Cosmeceuticals: Studies on the Proteolytic Activity of Arthrospira platensis and Its Efficient Incorporation in a Hydrogel Formulation. Cosmetics 2022, 9, 106.
² Brenda L. Edison, BAHeather A. Smith, BSBarbara A. Green, RPh, MSNeena K. Tierney, PhD. Skin exfoliation with low concentrations of alpha hydroxy acids and poly hydroxy acids when incorporated into wash-off or leave-on products using a novel abbreviated model to measure cell turnover rate. Journal of the American Academy of Dermatology, Volume 85, Issue 3, Supplement , Ab165, September 2021

Controlls sebum production and clears pores

By controlling the skin's natural oil production and purifying pores, Sake (and lees) reduce the chance for clogged pores that lead to acne.

The Skinopsis

Pores (or rather follicles) are tiny openings on our skin that hold sebum and hair. They're not muscle, so they can't open and close like little sphincters on your face (because that'd be weird...). But sometimes they seem to have a mind of their own, don't they?

There are several reasons why pores can sometimes appear larger.

Think of your pore like a drawstring pouch. If it's full of gunk (sebum, dirt, dead skin cells), it can stretch the opening and make it more visible. And if that drawsting like your skin loses elasticity, it can have trouble tightening up the opening.
 
So what about the myth that steam opens up your pores? It actually softens your skin, making it easier to gunk slip right out. Think of it like trying to squeeze M&Ms out of a slab of hard, stiff concrete versus soft, malleable konjac. Which one do you think would be easier?

Sake contains a bunch of compounds that can help control sebum levels, boost elasticity, and soften your skin, making it easier to clear away dirt and keep those pores looking tight and tidy. 

What compounds in Sake Kasu help reduce pore visibility?

Galactomyces, α-EG, α-GG, Enzymes, Thiamin, Malic acid, Inositol, Oligosaccharide

The Research

In a study published to the Journal of Clinical Medicine in 2021, researchers recruited over 250,000 women between ages 20–35 years to apply the Sake compound, Galactomyces on their skin for 4 weeks and use a take-home skin imagining device to document the results every day. The purpose was to observe the effects of the Sake compound on their enlarged follicular pores, which was one of the top 3 skin concerns of this age group.

In the study, researchers noticed that pores were the most visible or enlarged in the mornings after wake up. The scientists noted two possible reasons for this: 1) the dehydration of the skin surrounding pores at night, and 2) the accumulation of sebum during sleep.

The study found that because of Galactomyces' significant moistuizing capacity, it was able to reduce pore size by increasing skin hydration and plumping up the surrounding skin.

The study also noted that because Galactomyces significantly decreased the sebum production of sebum stimulated by UVB irradiation. So in addition to its moisturizing effect, Galactomyces can reduce the pore size by controlling sebum production.¹

In a separate study published to Bioscience, Biotechnology, and Biochemistry in 2020, it was found that ingesting Sake cake effectively decreased sebum content for the the female test subjects. (The study also found that Sake Kasu had additional benefits including glossy hair, improved facial tone, and "waking up refreshed.")²

¹ Miyamoto, K.; Dissanayake, B.; Omotezako, T.; Takemura, M.; Tsuji, G.; Furue, M. Daily Fluctuation of Facial Pore Area, Roughness and Redness among Young Japanese Women; Beneficial Effects of Galactomyces Ferment Filtrate Containing Antioxidative Skin Care Formula. J. Clin. Med. 2021, 10, 2502.
² Hiroko Maruki-Uchida, Masahiko Sai, Shoichiro Yano, Minoru Morita, Kazuhisa Maeda, Amazake made from sake cake and rice koji suppresses sebum content in differentiated hamster sebocytes and improves skin properties in humans, Bioscience, Biotechnology, and Biochemistry, Volume 84, Issue 8, 2 August 2020, Pages 1689–1695

Smooths and softens your skin texture

Eliminates rough skin, while promoting soft and smooth glow

The Skinopsis

Ever felt like your skin's been replaced by a sheet of sandpaper? We've all at some point felt like our skin has a mind of its own and decides to turn into a rough, scaly mess at the most inconvenient times. So, why does our skin betray us like this?

Skin roughness happens for loads of reasons, like dehydration, cold weather, lack of essential nutrients, or the skin cell renewal process may be slowing down due to age.

Sake (and lees) compounds not only hydrate and exfoliate the skin, but also goes an extra step to smooth and soften your skin texture.

What compounds in Sake Lees help balance your complexion and smooth your skin texture?

a-EG, Galactomyces, Protease, Glutamic acid, Niacin, Oligosaccharides

The Research

In a 1997 study published in Skin Pharmacology and Physiology, researchers reported that the ethyl α-d-glucoside (a-EG) found in sake, helps smooth rough skin caused by UV-B exposure.

And because a-EG is also known to help with transepidermal water loss and has skin moisturizing effects, it can promote smoother, more supple skin texture.¹

This was confirmed in a 2018 study published in Foods, which showed that Sake Kasu lead to big improvements in skin texture.²

In another study published in the Journal of Clinical Medicine in 2021, researchers observed the effects of Sake compound Galactomyces on the skin of over 250,000 women aged 20-35.

The study observed the difference between before and after the subjects used face wash containing Galactomyces and found that skin roughness was signifcantly less after using the face wash compared to before.

The study also found that the test subjects' skin roughness value at week 4 of using the face wash with Galactomyces was significantly improved compared to week 1 of starting the trial.³

¹ Kitamura N, Ota Y, Haratake A, Ikemoto T, Tanno O, Horikoshi T. Effects of ethyl alpha-D-glucoside on skin barrier disruption. Skin Pharmacol. 1997;10(3):153-9. doi: 10.1159/000211480. PMID: 9287396.
² Maeda K, Ogino Y, Nakamura A, Nakata K, Kitagawa M, Ito S. Identification of Rice Koji Extract Components that Increase β-Glucocerebrosidase Levels in Human Epidermal Keratinocytes. Foods. 2018 Jun 18;7(6):94. doi: 10.3390/foods7060094. PMID: 29912147; PMCID: PMC6025003.
³ Miyamoto, K.; Dissanayake, B.; Omotezako, T.; Takemura, M.; Tsuji, G.; Furue, M. Daily Fluctuation of Facial Pore Area, Roughness and Redness among Young Japanese Women; Beneficial Effects of Galactomyces Ferment Filtrate Containing Antioxidative Skin Care Formula. J. Clin. Med. 2021, 10, 2502. doi: 10.3390/jcm10112502

Prevents and repairs UV damage

The Skinopsis

Have you seen the trucker with the Harvey Dent-esque contast, where the sun-exposed side of their face is significantly more wrinkled compared to the non-exposed side? Yes, yes it looks like propaganda paid for by Big Sun Block Corp. But seriously, sun damage is no joke and is said to account for up to 80% of visible signs of skin aging.

I remember when my American butt first moved to Asia in the 90s, and seeing all the people around me with Shiseido sunblock and sunbrellas, thought to myself, "psshhh how are you going to get a gorgeous tan if you did that?"

Now that I'm older, I know better. And boyyy, regrets have I got 'em.

But even with dutifully applying sunblock when heading outdoors and staying in the shade as much as possible, there's still incidental sun exposure to be wary of.

So what do you do about the sun damage that you can't protect against unless you literally live like a vampire? Luckily, Sake contains several compounds and antioxidants that not only repair damage from UV exposure but also provide a bit of protection as well (but it's no substitute for sunblock, so don't skip it and remember to reapply often!) 

Higasa, or "sun umbrella" in Japanese, is designed to be lightweight and offer additional protection against UV rays and heat.

What compounds in Sake Kasu help prevent and repair your skin from UV damage?
Ferulic acid, α-EG, a-GG, Saccharomyces, Glutamic Acid, Niacin, Thiamin, Pantothenic Acid, p-Coumaric Acid

The Research

A study published to the Journal of Agriculture and Food Chemistry in 2005, researchers found that using Sake concentrate on the skin every day can help protect it from UVB radiation. It found that Sake concentrate can even reduce damage to the outer layer of skin caused by UVB radiation.¹

In another study conducted by Doosan R&D Center and Department of Chemical and Biochemical Engineering, Dongguk University, researchers found that Sake can prevent and treat skin aging caused by sun exposure.

The study showed that Sake protected the skin from photoaging by reducing skin wrinkling and epidermal thickening -- which refers to changes in the skin's texture and appearance that lead to rough, scaly, or leathery skin.

The antioxidants in Sake help fight free radicals and protect skin cells from UV damage.²

Sake also contains a powerful skincare compound called Ferulic acid.³

Ferulic acid is a powerful antioxidant that can reduce the damage caused by UV rays. It also neutralize free radicals and reduce oxidative stress on the skin.

This helps to prevent some of the damage associated with sun exposure, such as premature aging and risk of skin cancer.

Given these anti-aging advantages, Ferulic acid has become a popularity additive in skincare formulations. Amazingly, in Sake, Ferulic acid occurs naturally, thanks to our wonderful ally, Koji⁴!

¹ Hirotsune M, Haratake A, Komiya A, Sugita J, Tachihara T, Komai T, Hizume K, Ozeki K, Ikemoto T. Effect of ingested concentrate and components of sake on epidermal permeability barrier disruption by UVB irradiation. J Agric Food Chem. 2005 Feb 23;53(4):948-52. doi: 10.1021/jf048893s. PMID: 15713003.
² Seo MY, Chung SY, Choi WK, Seo YK, Jung SH, Park JM, Seo MJ, Park JK, Kim JW, Park CS. Anti-aging effect of rice wine in cultured human fibroblasts and keratinocytes. J Biosci Bioeng. 2009 Mar;107(3):266-71. doi: 10.1016/j.jbiosc.2008.11.016. PMID: 19269590.
³ Uno, T., Itoh, A., Miyamoto, T., Kubo, M., Kanamaru, K., Yamagata, H., Yasufuku, Y., & Imaishi, H. (2009). Ferulic Acid Production in the Brewing of Rice Wine (Sake). Journal of The Institute of Brewing, 115, 116-121.
⁴ Uno, T., Itoh, A., Miyamoto, T., Kubo, M., Kanamaru, K., Yamagata, H., Yasufuku, Y., & Imaishi, H. (2009). Ferulic Acid Production in the Brewing of Rice Wine (Sake). Journal of The Institute of Brewing, 115, 116-121.

Helps with atopic dermatitis

The Skinopsis

Skin inflammations – because your skin figured you didn't have enough going on in your life. Causes range from infections and allergies to environmental factors and autoimmune diseases, and they bring a host of problems like redness, swelling, heat, flaking, and sometimes pain or itching. It's like a choose-your-own-adventure book where every choice is wrong.

Contact dermatitis is when your skin is a little too sensitive and can react negatively when exposed to certain ingredients. This can be skin allergy or skin irritation.

Atopic dermatitis, also known as eczema, is a chronic condition that causes the skin to become dry, itchy, and irritated.

The best way to avoid contact dermatitis is by avoiding ingredients that are harsh or that your skin may be sensitive to. But what about atopic dermatitis? It turns out Sake and Sake Kasu contains compounds that can help reduce skin inflammations from atopic dermatitis. Read on to find out more. 

When your skin inflammation has its own schedule and doesn't include your plans.

What compounds in Sake Kasu help promote skin elasticity and firmness?

Linoleoyl ethanolamide (LE), Lactobacillus, Inositol, Niacin

The Research

In a study published to European Journal of Pharmacology in 2013, researchers found a compound called linoleoyl ethanolamide (LE) in sake lees could help to reduce inflammation.

When they applied LE to inflammed skin (contact dermatitis) of mice, they found that inflammation reduced where LE was applied.

The researchers observed that LE was able to lower the production of several inflammation-causing substances, block a specific pathway known to trigger inflammation, and stop a protein from entering the cell nucleus, which usually promotes inflammation.

The researchers even found that the effect of LE on reducing TNF-alpha was even better than licorice root, a popular anti-inflammatory compound commonly used in skin care treatments.¹

Based on their results, the researchers suggest that LE can be an effective treatment against skin inflammation, like contact dermatitis.

Some strains of Lactobacillus (lactic acid bacteria) have been shown to be able to lower the production of IgE.

In 2012 study published to Food Science and Technology Research, researchers extracted several strains of Lactobacillus (a type of lactic acid bacteria) and tested their ability to discourage inflammation by suppressing serum immunoglobulin E (IgE). High levels of IgE has been linked to most allergies and skin inflammations like atopic dermatitis.

The researchers studied the effects of different strains of Lactobacillus and their ability to lower the production of IgE. found that specifically the strain of Lactobacillus extracted from Sake Lees, was the most effective at reducing IgE compared to other strains.

The researches noted that the decrease in IgE levels is likely because L. paracasei K71 stimulates the production of a substance called IL-12, which shifts the immune system towards reducing another substance called IL-4, which is necessary for IgE synthesis.

Overall, they concluded that the properties of Sake Lees may be effective in improving allergies and skin inflammations that involve IgE.²

¹ Ishida T, Nishiumi S, Tanahashi T, Yamasaki A, Yamazaki A, Akashi T, Miki I, Kondo Y, Inoue J, Kawauchi S, Azuma T, Yoshida M, Mizuno S. Linoleoyl ethanolamide reduces lipopolysaccharide-induced inflammation in macrophages and ameliorates 2,4-dinitrofluorobenzene-induced contact dermatitis in mice. Eur J Pharmacol. 2013 Jan 15;699(1-3):6-13. doi: 10.1016/j.ejphar.2012.11.030. Epub 2012 Nov 28. PMID: 23201070.
² Kumagai, Takehisa & Iguchi, Mariko & Shigeyama, Naoya & Okada, Sanae & Joh, Toshio & Hara, Takashi. (2013). Lactobacillus paracasei K71 Isolated from sakekasu (Sake Lees) Suppresses Serum IgE Levels in Ovalbumin-immunized Balb/c Mice. Food Science and Technology Research. 19. 127-132. 10.3136/fstr.19.127.

Part 7: Sake Kasu skincare results in real life

Bet you're super keen by now to see the actual impact this Japanese wonder ingredient has on the skin, right?

Well, luckily - there are Japanese beauty bloggers who've been putting it to the test and sharing their journeys with sake-curious skincare fans. There's a catch though - their blogs are all in Japanese, making it tough for Westerners to find and read. And unlike our K-beauty friends who share their knowledge far and wide, the Japanese seem content to keep their secrets, well, secret.)

But don't worry. We've gone ahead and done the homework for you. we took the time to gather the best of the before and after accounts to translate and share them with you. *Pausing to give a mental high-five to our past self for taking all those Japanese classes.*

Japanese mommy blogger and former esthetician

Let's share a quick, easy, and cheap home care routine, brought to you by a mom who used to work as an esthetician at a salon in trendy Omotesando.

Before having a baby, Azu maintained her skin with the high-end facial equipment available at the salon where she worked. But after becoming a mom, she found herself with little time to care for her own skin. This lack of care led to dry skin, larger pores, and age spots becoming more obvious. Dark circles under her eyes started to show up due to sleepless nights from looking after her baby.

Her skin was in bad shape, but she was hesitant to spend money on pricey serums or facial treatments. Instead, she wanted a simple and naturla skin care routine that she could do at home when her baby was asleep.

Here Azu shows how she applies Sake Kasu to her skin.

About beauty blogger Azu:

A working mom and former esthetician in Omotesando, who now lives in Malaysia.

She specializes in anger management, specifically in the context of child-rearing.

Through her blog, she shares insights on life in Malaysia and local cuisine tips.

Azu taps into her background as a former esthetician to offer valuable beauty advice specifically for new moms.

Always fond of natural skincare, she experimented with a Sake Kasu face pack. After applying it as a face mask, she was amazed by the skin transformation just 10 minutes later.

The unfiltered close-ups may reveal the reality of a thirty-something mom's skin, but they also show the brightening effect of the sake kasu pack. Even her husband commented on how glowy her skin looked! After just one use, her skin looked brighter and felt softer and plumper. She was hooked.

She also found that regular use of the mask noticeably minimized her pores, effectively removed dirt, improved blackheads, and even lightened her dark spots.

She noted the instant benefits of Sake Kasu outperformed many high-end and luxury skincare treatments she had used in the past, plus it was remarkably cost-effective.

Basically, Azu's story shows you don't need to spend a ton of time on a complex skincare routine. Her before and after shows that with the right natural ingredient like Sake Kasu and consistent use, great skin is super achievable for busy moms looking for easy and effective skincare solutions.

Thanks to Azu at babymaybe-official.com for letting us share her Sake Kasu experience with non-Japanese speakers.

How To Easily Get the Benefits of Fermented Rice Water At Home

INÉ Skin Nutrient Bars Made From Sake Kasu Fermented Rice Has You Covered 💯

Harness the power of Sake Kasu for glowing, age-defying skin.

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The soap base is additionally made with clean, vegan-friendly ingredients that are non-comedogenic, free of sulfates, parabens, and silicones, and safe for all skin types.

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