Hair Revive Peptide Shampoo contains Hexapeptide-11, an ingredient that has been clinically shown to help increase collagen production and improve hair growth. Nutra Peptide Shampoo has natural exfoliating properties which work to clear hair follicles of dead skin and make room for thicker hair growth. By addressing hair and scalp health at the cellular level, this formula provides healthier, thicker, stronger and younger hair and scalp!