KINS
KINS Booster Moist II, 50ml
KINS Booster Moist II, 50ml
@cosme rating: 5.4/7.0
The power of human-derived bacterial fermentation to change the fate of your skin
✓ 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
Even dry skin is firm, radiant, and highly moisturized. KINS' exclusive skin-beautifying bacteria care*1 routine awakens the beauty of your skin. Contains a high concentration of Bellp*2, a unique ingredient born from the symbiotic fermentation of bacteria, including human-derived bacteria. Amino acids*3, vitamins*3, polyphenols*3, short-chain fatty acids*3... 468 fermentation-derived ingredients penetrate deep into the stratum corneum like a skin-beautifying cocktail, providing firmness, radiance, and moisture for a comprehensive approach. After washing your face, use this one bottle for anti-aging care*4. Awaken your beauty with the power of human-derived bacteria. *1 Bacterial care to maintain health and beauty*2 Bifidobacteria/Enterococcus (Durans/Faecalis/Faecium)/Lactobacillus/Lactococcus/Pediococcus/Soybean fermentation filtrate, Lactobacillus/Soymilk fermentation filtrate. Moisturizing ingredients. *3 All moisturizing ingredients*4 refer to care appropriate for each age.
Ingredients
Water, (Bifidobacterium/Enterococcus (Durans/Faecalis/Faecium)/Lactobacillus/Lactococcus/Pediococcus)/Soybean Seed Fermentation Filtrate, Lemon Fruit Water, Butylene Glycol, Glycerin, Propanediol, Lactobacillus, Lactobacillus/Soymilk Fermentation Filtrate, Rice Fermentation Filtrate, Saccharomyces Cerevisiae Extract, Polymnia Sonchifolia Root Juice, Alpha-Glucan Oligosaccharide, Polyquaternium-51, Aspartic Acid, Arginine, Hydroxyethylcellulose, Hydroxypropyl Methylcellulose, Maltodextrin, Grapefruit Seed Extract, PEG/PPG/Polybutylene Glycol-8/5/3 Glycerin, Sodium Citrate
How to use
After washing your face, take 1-2 pumps in the morning and evening and gently massage into your skin.
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.
The fresh, smooth texture spreads easily and blends well with the skin, leaving it feeling non-sticky! The scent is also refreshing and it's very comfortable to use. *All comments on usage are personal opinions.
I used a sample. The liquid is watery, but when I applied it to my skin, it was very thick! It felt very moisturizing. It absorbed relatively quickly, but because it contains so many moisturizing ingredients, it felt a bit sticky on the surface. I thought it might be too heavy for morning skincare before makeup, but I think that depends on what I layer on top of it, like lotion, serum, or emulsion. This product is aimed at people with very dry skin, so I think I would use it in the middle of winter. It's fragrance-free, so it was easy to use. This was my first time using KINS, and the ingredients were very appealing! I also have a sample of the other booster, so I'll try them out and compare them.
I love how thick and gentle it is to use. I feel like my skin has become firmer with continued use! Another great thing about this product is that it is free of synthetic fragrances, alcohol, preservatives, tar-based pigments, and UV absorbers!
I use this as a booster for the stratum corneum serum. It's a little thick, but more of a liquid, so be careful not to let it drip from your palms. I combine the lotions I have on hand after this. So far, I haven't had any that don't work, so I can use it without any problems. It doesn't interfere with the next skincare routine, and I can quickly reapply it. It feels sticky, but if I apply lotion right after, my skin feels strangely more moisturized than usual. It has a stronger moisturizing feel than the normal type. This may be more reliable in the coming cold season. The normal type has a more refreshing feel, and I personally prefer it.
I was attracted by the catchphrase "Firmness, Luster, and Moisture in One Bottle." It absorbs smoothly into the skin and feels great to use. It also leaves the skin feeling bouncy and supple, and the moment you apply it, you can almost feel the power of bacteria and fermentation. I'm looking forward to seeing how my skin changes after continued use.