This sulfate-free shampoo extends color vibrancy for up to 32 washes when used with the Acidic Color Gloss Conditioner. Providing long-lasting protection, the acidic pH of the formula seals the cuticle and locks in shine for a glass-like effect. PH balanced formula is enhanced with amino acids and vitamin E to help seal in the cuticle and lock in shine. Provides molecular-level shine. Protects color from fading and dullness.