Koh Gen Do
Koh Gen Do Brightening Moisture Mask, 80g
Koh Gen Do Brightening Moisture Mask, 80g
@cosme rating: /7.0
A purifying and moisturizing pack made with double clay and hot spring water.
✓ 100% authentic
✓ Ships from Japan in 3-5 days
✓ Duties prepaid for US orders
✓ Tracked delivery via Japan Post
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What it is
Introducing a brightening moisture mask that can be used as a mud pack without putting a burden on the skin. The double clay design of Moroccan lava clay and Okinawan marine silt enhances adhesion, adsorption, and brightening effects. It spreads smoothly like a cream, purifying the skin while adsorbing sebum dirt clogged in pores, and the skin care effects of plant-derived T3 oil and seaweed extract make the skin firm and taut. Use once or twice a week for bright, clear, beautiful skin full of moisture. * Removing dirt Adsorption ingredients Sea silt. adsorption ingredients. Cleansing and moisturizing Jojoba seed oil, squalane. derived from olives. , shea butter. moisturizing ingredients. Gagome extract, kombu extract, Okinawa mozuku extract, eelgrass extract. moisturizing and skin conditioning ingredients. No fragrances, synthetic pigments, petroleum-based mineral oils, parabens, or alcohol
Ingredients
Water, Butylene Glycol, Glycerin, Behenyl Alcohol, Stearic Acid, Bentonite, Jojoba Seed Oil, Methyl Gluceth-10, Phytosteryl/Isostearyl/Cetyl/Stearyl/Behenyl Dimer Dilinoleate, Squalane, Pentylene Glycol, Glyceryl Stearate SE, Lauramide/Myristamide DEA, Polyglyceryl-10 Stearate, Moroccan Lava Clay, Sea Silt, Hot Spring Water, Betula Platycodon (White Birch) Sap, Lavender Flower Extract, Rosemary Leaf Extract, Sage Leaf Extract, Perilla Leaf Extract, Artemisia Princeps Leaf Extract, Ginger Root Extract, Hydroxypropyltrimonium Hyaluronate, Kagerou (Cucumber) Extract, Shea Butter, Laminaria Japonica Extract, Cladosiphon Okinawani Extract, Zostera Marina Extract, Titanium Dioxide, Potassium Hydroxide, Sucrose Stearate, Iron Oxides, Aluminum Hydroxide, Phenoxyethanol
How to use
After washing your face, wipe off excess water and apply to the entire face, avoiding the area around the eyes and mouth, making sure to cover the skin. Leave on for approximately 5 to 10 minutes, then rinse thoroughly with water or lukewarm water and continue skincare as usual. We recommend using this product once or twice a week. *Be sure to close the cap tightly after use. Caution:. Use with caution, paying close attention to any abnormalities on your skin. Do not use on areas with cuts, swelling, eczema, or other abnormalities. If you experience any abnormalities such as redness, swelling, itchiness, irritation, discoloration (white spots, etc.) or darkening during use, or if the skin you used it on is exposed to direct sunlight, discontinue use and consult a dermatologist. Continuing to use the product may worsen the symptoms. If the product gets into your eyes, rinse immediately. If a foreign body sensation persists even after rinsing, or if any abnormalities persist, discontinue use.
We ship internationally from Japan!
Frequently Asked Questions
Is this authentic?
Yes. We only buy from official retailers and directly from the brands here in Japan. Never resellers, never grey market stock.
We are beauty lovers too, so we know the worry, especially with something you are putting on your face. Authenticity is 100% guaranteed by us.
What are your shipping rates?
On orders under US$75, shipping is a flat US$20 to the United States and US$10 to all other countries.
Orders of US$75 or more ship free, applied automatically at checkout. Your exact shipping cost is shown before you pay.
How long does delivery take?
These estimates are for International Airmail (Tracked) and include 3 to 5 business days of processing in Japan.
- United States: 12 to 15 business days
- Canada, United Kingdom, France, Germany: 9 to 12 business days
- Australia, New Zealand, Denmark, Finland, India, Indonesia, Italy, Netherlands, Spain, Sweden, Switzerland: 10 to 13 business days
- China, Hong Kong, Malaysia, Singapore, South Korea, Taiwan, Thailand, Vietnam: 8 to 10 business days
- Rest of the world: 11 to 18 business days
Actual delivery can be affected by customs clearance, seasonal congestion, or carrier delays in the destination country, all of which are outside our control.
Do you offer express shipping?
Yes. As of 22 July 2026, we offer International Express Mail through Japan Post. The cost is based on order weight and is calculated automatically at checkout.
Will I pay customs or import fees?
US orders: No. As of July 1, 2026, all US orders ship DDP (duties delivered prepaid), meaning we prepay all import duties on our end. Nothing is due at your door.
Orders outside the US: Possibly. Duties and import taxes are set by your local customs authority and are not collected at checkout, so any charges on delivery are your responsibility.
We're working on rolling out prepaid duties for more countries soon.
I ordered this from a wedding gift catalog! I use this pack once a week, and it removes dullness and makes my skin look clearer! It also seems to remove dirt deep inside my pores, so it's a favorite product ^^*I plan to buy it myself when I run out!
I tried it because it came with the set. I applied it thick enough that my skin was not visible and left it for a few minutes. I had high hopes for it to leave my skin smooth when I washed it off, but there was nothing left behind after rinsing. It makes me feel good about myself during bath time, so I'll keep using it for a while.
I've known about Koh Gen Do for a while. My favorite makeup artist introduced their base makeup and all-in-one skincare, so I was curious and decided to buy them. I've used a variety of masks, and this one isn't bad. I bought it as a trial because the points reward was good.
I started using this product after receiving a trial size from my mother. I find sheet masks a hassle, so I like the wash-off type because I can use it during bath time, but I thought the downside was that it doesn't have much of a lasting effect. Rather than being moisturizing, I like the feeling that it leaves my skin feeling firm and smooth thanks to the clay effect. I thought the moisturizing effect was only moderate, but my husband, who doesn't do much skincare, really liked it, and was so happy that he could use it for several days without feeling too dry, so he decided to buy the full product. As someone who is used to using cosmetics, I didn't notice much, but I thought it had a solid effect.