Kerastase Serum Extentioniste, Scalp and Hair Serum 1.7 oz

Strengthen and protect strands with the K?rastase Resistance Serum Extentioniste, a nourishing leave-in hair serum that helps to protect against breakage. The non-greasy formula uses a host of powerful ceramides to seal the hair cuticle whilst a blend of lipids creates a smooth surface, creating a fortifying effect from the inside out.