The Redken Acidic Bonding Curls 300mL Duo is a powerful repair system designed to restore and strengthen processed, damaged curls and coils. This sulfate-free and silicone-free shampoo effectively removes build-up while reinforcing hair bonds from within, promoting healthier curls. Paired with the intensely hydrating conditioner, this duo enhances curl elasticity, reduces frizz, and helps maintain curl definition for long-lasting results.