Olaplex No.4p Blonde Enhancer Toning Shampoo 8.5 oz is a highly concentrated purple shampoo that neutralizes brassiness and boosts brightness after one use for all blonde, lightened, and gray hair. The sulfate-free formula creates a rich lather while cleansing, toning, and repairing your hair. When hair is stressed, it can quickly become fragile and lose its luster. The right shampoo for damaged hair can restore manageability, shiny and health. OLAPLEX NO. 4 Bond Maintenance Shampoo works to bond strands, reinforcing them against frizz, breakage and split ends. Free of sulfates, parabens and phthalates, this powerful yet gentle formula is safe for all hair types. Try this hair conditioner for dry hair the next time your strands feel parched! Ideal for repairing and restoring dry locks, the Olaplex No. 5 Bond Maintenance Conditioner helps re-link broken bonds and split ends while moisturizing and nourishing. This product is perfect for everyday use and is free of aldehydes and formaldehyde. Simply apply after shampooing, leave in for three minutes and rinse.