Acid color gloss sulfate free shampoo improves the shine of your red color | Sulfate-free shampoo for colored and dull hair, formulated with acid shine complex and advanced PH technology that deeply purifies and improves hair shine thanks to its acid pH formula that seals the cuticle and corrects shine for a more vibrant color. Long-lasting protection and salon treatment at home Recover the shine of colored hair and intensify its color with shiny sulfate-free acid shampoo