The K18 Biomimetic Leave-In Molecular Repair Hair Mask is a genuine brand new product designed to repair damaged hair. Infused with active ingredients such as Hydrolyzed Wheat Protein and Sh-Oligopeptide-78, this 50ml hair mask provides smoothing and hair repair effects. The leave-in formulation ensures deep penetration and long-lasting benefits for adult and unisex users. With a period after opening of 12 months, this K18 product from the Biomimetic Hairscience collection is a must-have for those looking to restore and nourish their hair.