The Genesis collection is professionally formulated to strengthen hair & reduce hair breakage. 97% LESS HAIR FALL DUE TO BREAKAGE FROM BRUSHING* +89% MORE NOURISHED HAIR** Genesis Serum Fortifiant Hair Serum by Kérastase is a silicone-free hair and scalp serum — with a lightweight texture—that delivers intensely fortifying care to reduce breakage and strengthen weak hair. LTKvlog LTKBeauty LTKselfcare