

KINS Booster II
Renewal KINS BOOSTER II is an advanced skincare product designed to rejuvenate and enhance the overall appearance of your skin. This booster focuses on hydration, exfoliation, and protection, making it ideal for those seeking a youthful glow.
Key Ingredients:
- Lactobacillus Acidophilus / Soy Milk Fermentation Liquid features diverse ingredients, including 40 peptides and 20 amino acids, which help moisturize, enhance luster, and promote healthy skin.
- Saccharomyces Cerevisiae Extract comes from self-broken yeast and is rich in amino acids, peptides, and vitamins, providing deep hydration and conditioning for dry skin.
- Rice Fermentation Liquid, created through beneficial bacterial fermentation, offers significant moisturizing benefits, protecting against dryness. Known for keeping sake brewers’ skin youthful and radiant, this ingredient is a cherished secret in Japanese culture for beautiful skin.
- Hyaluronic Acid: Provides deep hydration and plumps the skin.
- Glycolic Acid: A gentle exfoliant that promotes cell turnover for a brighter complexion.
- Vitamin C: An antioxidant that protects against environmental damage and brightens the skin.
- Peptides: Support skin elasticity and firmness, reducing the appearance of fine lines.
- Botanical Extracts: Soothing ingredients that calm and nourish the skin.
Free From:
- Parabens
- Sulfates
- Artificial Fragrances
- Synthetic Dyes
- Cruelty (not tested on animals)
Suitable for normal, oily, and combination skin types.
How to use: Use this booster immediately after cleansing the face. One push in the morning and two pushes at night. No more than two pumps are needed. Spread it on the palm of your hand and gently apply to the entire face. After that, use the serum to complete your skincare routine. Use morning and evening for best results.
*Some ingredients are derived from soybeans. If you are allergic to soy, please consult your doctor to be sure.
Volume: 50ml
We ship internationally from our warehouse here in Tokyo. We use the services of third-party delivery service providers, namely, Japan Post (EMS) and Airmail, for shipping all the orders placed by our customers. View our entire policy here.
Every skin is different, therefore, no returns are accepted simply on the account that the product had an adverse reaction on your skin, or did not provide you any particular kind of results that you were expecting. However, you may initiate a return for the defective and damaged products purchased from the website within a period of7 (seven) days calculated from the order delivery date (“Return Period”). View our entire policy here.
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Unlike generic beauty retailers, Beauty Ninja carefully curates only the most advanced and luxurious Japanese skincare. Every product is tested and approved for its effectiveness.
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Yes! We source all products directly from Japanese brands, ensuring 100% authenticity.
In Japan, expiration dates are usually not printed on cosmetics unless required (e.g., food or medicated products). However, we keep small stocks and order directly from manufacturers to ensure you get the freshest products. Most items have a shelf life of 2–3 years when stored properly in a cool, dry place away from direct sunlight.
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Orders ship within 1–5 business days (we often order directly from manufacturers to ensure freshness). Once shipped, delivery takes 5–10 days, but times may vary due to customs or other delays.
- Free for orders over $250 USD
- Flat rate $15 USD for all other orders.
We ship to over 60 countries, including the USA, UK, Australia, Canada, and most of Europe and Asia. See our shipping page for the full list.
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