The Olaplex No. 4P Blonde Enhancer Purple Toning Shampoo is a highly concentrated, sulfate-free purple shampoo designed to cleanse, tone, and repair blonde, lightened, and grey hair. It leverages Olaplex's patented Bond Building Technology to strengthen hair from within while neutralizing unwanted yellow and brassy tones.Neutralizes Brassiness: Contains high-intensity violet pigments to counteract yellow tones, resulting in 3x brighter hair compared to leading purple shampoos after just one use.

Repairs & Strengthens: Infused with Bis-Aminopropyl Diglycol Dimaleate to re-establish broken disulfide bonds caused by heat, coloring, and chemical treatments.

Hydrating Formula: Unlike many purple shampoos that can be drying, this formula is designed to keep hair hydrated from root to tip.

Highly Concentrated: Requires only a small amount to create a rich, luxurious lather.

Clean Formula: It is vegan, cruelty-free, and formulated without sulfates, parabens, phosphates, or gluten

Apply: Massage a generous amount into wet hair from root to tip.
Lather: Work into a full lather throughout the hair.
Process: Leave on for 1–3 minutes for standard toning, or up to 5 minutes for more intense brightening.
Rinse & Condition: Rinse thoroughly and follow with a conditioner like Olaplex No. 5 Bond Maintenance Conditioner or the matching No. 5P Blonde Enhancer Toning Conditioner.