The word "Bose" is generally not seen on the ingredient list. Its scientific name is "hydroxypropyl tetrahydrofuran triol", which is essentially a sugar (not a sugar that makes you fat). It is a glycoprotein polymer extracted from beech xylose. At first, Bose was used as a penetration enhancer in the early formulation of skin care products, that is, to help other effective ingredients be better absorbed by the skin.

Bose is a patented ingredient. By increasing the expression of HS-PGs (Perlecan, CD44 and polyligand proteoglycan), Bose can improve the cohesion of epidermis and epidermis-dermis junction (DEJ). To put it bluntly, it is not good at wrinkle removal, but stimulates collagen production, tightens the connection between epidermis and dermis, fills the skin and produces prevent wrinkles. Daidzein can mainly promote the synthesis of collagen ⅳ and ⅶ, but it is not so strong for collagen ⅰ.