Redken Acidic Bonding Curls Leave-In Treatment 250 mlA silicone free leave in treatment that provides heat protection, repair and hydration for damaged curls. Features: no rinse treatment, does not contain silicones, regenerates the structures of damaged curls, provides long lasting hydration, balances the pH, reduces hair frizz, thermal protection up to 230. How to use Apply to washed hair, rub the treatment into the lengths. Do not rinse and style your hair as usual.