Olaplex No.4P is a specialized purple-toning shampoo formulated to neutralize unwanted yellow and brassy tones in blonde, silver, and lightened hair. Enriched with the brand's proprietary bond-building technology, this 250ml shampoo gently cleanses while depositing violet pigments that enhance brightness and luminosity. The hydrating formula maintains moisture balance, preventing the dryness often associated with color-treated hair. Ideal for maintaining salon-quality blonde between professional treatments, it restores vibrancy and extends color longevity. Suitable for all blonde hair types, from platinum to honey-toned shades.