Unique PolyQ Complex forms an invisible barrier that protects against fading and defends the hair from environmental aggressors. UV absorbers protect color from the dulling effects of the sun. Provitamin B5 hydrates and provides antioxidant protection. Keratin conditions the hair while reinforcing its natural protective barrier against color loss. Formulated without sodium chloride, sulfates, and parabens to protect the longevity of Keratin Complex® smoothing treatments.