Initialiste hair serum transforms the health of hair with its advanced formula inspired by skincare. The benefits of the super hair serum are reduced hair breakage, stronger hair, thicker hair and healthier hair. With healthier hair, breakage is reduced and hair is able to grow longer. This best-selling hair serum has a fresh and delicate fragrance and is applied with a targeted pipette. The hair serum instantly absorbs. Kerastase Initialiste hair and scalp hair serum aims to provide the best of professional luxury hair care for all fine and thinning hair.