As a cosmetic raw material, palmitoyl dipeptide-5 diaminohydroxybutyrate has the mechanism of action of promoting the synthesis of hemifibrillary proteins, thereby restoring the function of the dermis-epidermis junction (DEJ). This ingredient can significantly improve the elasticity, firmness and softness of the skin, and has excellent anti-wrinkle and skin firming effects. Generally, this ingredient is widely used in various beauty and skin care products, such as lotions, facial masks, day creams, night creams, and eye essences.