Olaplex's No. 4P Blonde Enhancer Toning Shampoo is specially formulated for blonde or lightened hair, effectively eliminating dull yellow and brassy tones to reveal radiant, cool hues.With OLAPLEX's Bond Building Technology, it strengthens and repairs hair, enhancing overall health and resilience. The sulfate-free formula is enriched with glycerin, providing deep hydration from roots to ends, ensuring soft and shiny hair without stripping it of natural oils. Infused with a blend of gentleness, this shampoo is cruelty-free, vegan, and devoid of parabens, phosphates, and phthalates, making it suitable for a gentle cleansing experience. Achieve a cool blonde look with brilliant shine through its customizable toning benefits, designed to meet diverse styling needs. Size:33.8oz