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Strengthen, soften and neutralize unwanted yellow tones and brassiness in blonde, lightened and grey hair. Olaplex No.4P Blonde Enhancer Toning Shampoo is gentle enough for everyday use to help brighten and repair your hair. This sulfate-free, highly concentrated formula allows for customizable toning, the longer you treat, the brighter the results. Achieve up to 3 times brighter hair compared to other purple shampoos. - Vegan - Cruelty Free - Paraben Free, Sulfate Free - Phosphate Free - Colour Safe - All hair types All OLAPLEX products contain their patented technology, strengthening fragile bonds with every step of the routine for the healthiest hair possible. OLAPLEX products are thoroughly tested in accordance with industry standards in-house and by independent third-party laboratories for safety and efficacy Ingredients Water (Aqua, Eau), Sodium C14-16 Olefin Sulfonate, Cocamidopropyl Betaine, Glycerin, Sodium Cocoamphoacetate, Sodium Chloride, Acrylates Copolymer, Betaine, Pheno