Sulfate-free shampoo for dull colored hair with acidic shine complex and acidic ph (5.0-5.6) to cleanse and revive colored hair while prolonging and protecting salon color and shine at home benefits sulfate-free shampoo for colored and dull hair, formulated with acidic shine complex and advanced ph technology that deeply cleanses and enhances hair shine thanks to its formula with acidic ph that seals the cuticle and fixes shine for a more vibrant color. Long-lasting and salon shine protection at home. Recover the shine of your colored hair and intensify its color with acidic color gloss sulfate-free shampoo tips for use use as a complete routine with acidic color gloss conditioner. Apply to damp hair. Lather. Clarify. In case of contact with eyes, rinse immediately.