INCI · plant-extract · CIR review pending · used in 17 products
자작나무잎수
Betula Platyphylla Japonica Juice
Betula Platyphylla Japonica Juice is the sap derived from the Japanese white birch tree (Betula platyphylla japonica, family Betulaceae), with CAS number 223748-09-2. It is commonly known as birch sap or birch water and is used as a skin conditioning agent in cosmetic formulations. It frequently appears as a primary or high-concentration ingredient in hydrating toners, creams, and essences, often replacing water in the formula.
Evidence level
weakEWG score
—Comedogenic
—Category
plant-extract● Benefits
According to the source, its official CosIng-listed function is skin conditioning. It is widely used in K-beauty hydrating products, suggesting a moisturizing and skin-softening role, though the source does not provide detailed clinical benefit data.
hydratingskin-conditioning
● Cautions







![Round Lab [Limited Edition] Birch Moisturizing Lip Balm + Silicone Brush Set](/_next/image?url=https%3A%2F%2Fcdn.shopify.com%2Fs%2Ffiles%2F1%2F0651%2F7656%2F8022%2Ffiles%2FBirch_Lip_Balm_with_brush_with_box.webp%3Fv%3D1772852599&w=3840&q=75)


![Round Lab [DEAL] Birch Mild-Up Sunscreen UVLock SPF 50+ Broad Spectrum](/_next/image?url=https%3A%2F%2Fcdn.shopify.com%2Fs%2Ffiles%2F1%2F0651%2F7656%2F8022%2Ffiles%2FBirch_Juice_Mild-Up_Sunscreen_UVLock_SPF_50_Broad_Spectrum_Round_Lab_2.png%3Fv%3D1772850750&w=3840&q=75)
![Round Lab Birch Moisturizing Sunscreen UVLock SPF 45+ Broad Spectrum [Subscription]](/_next/image?url=https%3A%2F%2Fcdn.shopify.com%2Fs%2Ffiles%2F1%2F0651%2F7656%2F8022%2Ffiles%2FBIRCH_JUICE_MOISTURIZING_UVLOCK3_Large_10126e46-dfcc-4cd5-970c-146d4be65989.webp%3Fv%3D1772852134&w=3840&q=75)




