ISNTREE
★ K-BEAUTY CLEAN · BORN FROM AN INGREDIENTS BLOG
THE INGREDIENTS
THAT DO NOT LIE.
ISNTREE is the K-beauty brand born from a Korean educational blog about cosmetic ingredients. Its philosophy is radical: no marketing, no questionable ingredients, just effective actives with a clear and logical INCI. Hyaluronic Acid Toner, Active Green Tea, Chestnut BHA Clear, TW-Real Bifida — each line is built around a comprehensible ingredient at a useful concentration. K-beauty for those who read the ingredients.
★ ISNTREE EXPERTISE
CLEAR FORMULATIONS, EFFECTIVE ACTIVES
Hyaluronic acid, Jeju green tea, chestnut BHA, Bifida: data-driven K-beauty.
ISNTREE was created by the founders of a Korean educational blog on cosmetic ingredients who were tired of empty marketing. The brand only sells what they would put in their own routine. Here are the 3 signature actives.
✦ INGREDIENT 01
HYALURONIC ACID 5 WEIGHTS
The bestseller. The Hyaluronic Acid Watery Sun Stick and Hyaluronic Acid Toner combine 5 molecular weights of HA to hydrate at different skin depths. A global reference for accessible hydration.
✦ INGREDIENT 02
JEJU GREEN TEA
The Active Green Tea line contains 80% organically grown Jeju green tea extract. Antioxidant, hydrating, anti-blemish — a gentle and natural alternative to BHA for sensitive skin.
✦ INGREDIENT 03
BIFIDA + CHESTNUT BHA
TW-Real Bifida for the skin barrier, Chestnut BHA to exfoliate without irritation. Two complementary lines for blemish-prone skin that wants gentle care.
Readable formulations, proven active ingredients, affordable prices: ISNTREE is the most honest K-beauty brand on the market, perfect for those who want to understand what they are putting on their skin.
★ THE SIGNATURE LINES
THE 4 ICONIC LINES
Choose your line according to your favorite ingredient.
HYALURONIC ACID
5-weight hydration
The iconic line. The Hyaluronic Acid Toner and Hyaluronic Acid Watery Sun Stick combine 5 molecular weights of HA — a universal hydration reference.
ACTIVE GREEN TEA
Antioxidant & gentleness
80% organic Jeju green tea. The Green Tea Hyaluronic Watery Essence is a natural alternative to acids — antioxidant, soothing, ideal for daily routine.
TW-REAL BIFIDA
Barrier & anti-aging
Concentrated Bifida ferment to repair the skin barrier. The TW-Real Bifida Ampoule firms, plumps, and soothes — accessible anti-aging.
CHESTNUT BHA
Gentle exfoliation
Chestnut-derived BHA to exfoliate without irritation. The Chestnut BHA Clear Liquid targets pores and blemishes — a gentle alternative to classic BHAs.
★ THE ENTIRE COLLECTION
DISCOVER THE ENTIRE COLLECTION
ISNTREE BELOW
From the cult-favorite Hyaluronic Acid Toner to the Green Tea, Bifida, and Chestnut BHA lines, find all authentic ISNTREE skincare — imported directly from Seoul, with no customs fees.
ISNTREE Real Rose Calming Mask 100ml
★ TO GO FURTHER
THE WORLD OF DATA-DRIVEN K-BEAUTY
ISNTREE, COSRX, BEPLAIN — honest and transparent K-beauty.
ISNTREE: the clean K-beauty brand born from an educational ingredient blog
The full story of ISNTREE: the brand’s birth from an ingredient blog, the Hyaluronic Acid Toner, and the data-driven philosophy.
READ THE ARTICLE →
ISNTREE: the Active Green K-beauty brand with Jeju green tea
Dive into the Active Green Tea range: Jeju green tea, ISNTREE PDRN, and other brand-specific clean innovations.
READ THE ARTICLE →
BEPLAIN: the clean data-driven K-beauty brand with Mung Bean and Cicaful
BEPLAIN shares with ISNTREE the clean and data-driven K-beauty approach — featuring Korean mung bean and rigorous clean beauty.
READ THE ARTICLE →★ YOUR QUESTIONS
ISNTREE FAQ
Everything you need to know about K-beauty born from an ingredient blog.
Which ISNTREE product to start with?
The Hyaluronic Acid Toner is the essential entry point: it’s the brand’s universal bestseller, an ultra-hydrating toner with 5 weights of HA suitable for all skin types. For blemishes, start with the Chestnut BHA Clear Liquid.
Why 5 molecular weights of hyaluronic acid?
Because each molecular weight of HA hydrates at a different skin depth. Large HAs (high weights) stay on the surface (immediate plumping effect). Small HAs penetrate deeply (long-lasting hydration). By combining 5 weights, ISNTREE covers the full range.
Active Green Tea vs Hyaluronic Acid: which to choose?
Hyaluronic Acid is pure hydration, universal. Active Green Tea adds antioxidants and a more anti-blemish effect (green tea is slightly sebum-regulating). For combination skin, choose Active Green Tea. For dry/sensitive skin, Hyaluronic Acid.
Chestnut BHA vs COSRX BHA: what's the difference?
COSRX uses classic salicylic acid. ISNTREE uses a BHA derived from chestnut extract — less irritating, better tolerated by sensitive skin. If you react to classic BHAs, try Chestnut BHA first.
What exactly does TW-Real Bifida do?
Bifida ferment is a clinically documented skin barrier repairing ingredient. It boosts radiance, slightly firms, and soothes. ISNTREE concentrates it at an effective level. Use it as an ampoule before your cream, morning and/or evening.
Are the ISNTREE products on Ma Petite Corée authentic?
Yes, 100%. Ma Petite Corée has been based in Seoul since 2017 and sources directly. Every product is new, sealed, and shipped from Korea, with no customs fees charged to you in the EU.