Sortick Keratin Milk is a leave-in treatment that is great for damaged hair. Keratin treatments will heal the hair damage problems like split ends or hair breakage. Natural Pure Collagen & Keratin works for both the core and the outer layer of the hair. It will carry out a deep repair for dry, damaged, frizzy hair. It will improve your hair’s strength which might be weakened by hair bleach treatments. It will give a long-lasting glossy finish to your hair by boosting its shine.