Infuse life back into damaged, over-styled hair with the powerful HASK Keratin Protein designed to restore, revive and strengthen parched, frizzy locks. Hydrolyzed keratin is a highly refined protein, structurally identical to naturally occurring keratin found in hair. Its precise molecular weight and size allows for optimum penetration and imparts gloss, strength and smooth texture. Keratin works to coat the hair shaft, reducing split ends and improving the hair's appearance and manageability.