Olaplex No.4P Blonde Hair Hydrating & Brightening Purple Toning Shampoo

A purple toning shampoo that strengthens, hydrates, and neutralizes brassiness while keeping hair hydrated from roots to ends. Suitable for all blonde, lightened, and gray hair97natural or stylist-created, root-to-tip or balayage. Scientifically proven to boost all blondes three times brighter compared to top purple shampoos. It is vegan, gluten-free, cruelty-free, and sulfate-free. The key ingredient is Bis-Aminopropyl Diglycol Dimaleate which rebuilds broken and weakened bonds. The shampoo has Olaplex's signature light, clean, and subtly sweet fresh citrus scent with notes of grapefruit and mint. Usage suggestion: Apply on wet hair, lather, let it process one to three minutes (or up to five minutes for intense toning), then rinse. Follow with Olaplex No.5 Conditioner or No.8 Mask for moisture or hydration. Pre-wash recommended with Olaplex No.4 Bond Maintenance Shampoo to remove buildup.