Acidic Bonding Curls Shampoo is a silicone-free and sulfate-free shampoo crafted to repair curl strength and repair weakened bonds to processed and damaged curly hair. This shampoo gently cleanses the hair while providing strength and definition to curls. When used along with the entire Acidic Bonding Curls system, curls experience 85% less frizz for up to 96 hours* for curls that are defined, manageable, and bouncy.