Olaplex Bond Maintenance Shampoo n°4 is a concentrate cleanser that repairs all types of thick or fine, natural or coloured hair. Enriched with the famous Olaplex formula, it repairs and protects hair from the inside, rebuilding the disulfide bonds that have been broken by the overuse of chemicals, colour treatments, heat and mechanical stress. Fights frizz effect, leaving hair amazingly soft and shiny. Formulated without Parabens, Sulfates, Phtalates, DEA, Aldehydes and Gluten.