KINS
KINS BOOSTER II, 30ml
KINS BOOSTER II, 30ml
Rated 4.5 out of 7.0 by Japan’s largest beauty community
The power of human-derived bacterial fermentation to change the fate of your skin
✓ 100% AUTHENTIC, SHIPS FROM JAPAN
✓ DUTIES & TAXES INCLUDED FOR US ORDERS
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What it is
Firmness, radiance, and moisture—all in one bottle. Awaken your natural beauty with KINS' exclusive skin-beautifying bacteria care*1 routine. 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, Lactobacillus, Lactobacillus/Soymilk Fermentation Filtrate, Rice Fermentation Filtrate, Saccharomyces Cerevisiae Extract, Polymnia Sonchifolia Root Juice, Alpha-Glucan Oligosaccharide, Polyquaternium-51, Aspartic Acid, Arginine, Hydroxypropyl Methylcellulose, Maltodextrin, Grapefruit Seed Extract, PEG/PPG/Polybutylene Glycol-8/5/3, Glycerin, Sodium Citrate, Glycerin
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.