Olaplex No. 4P Blonde Enhancer Toning Shampoo is a concentrated purple shampoo designed to refine blonde, lightened, and gray hair while supporting internal strength and resilience. Formulated specifically for color-treated hair, this advanced cleanser balances precise toning with restorative care. Its richly pigmented texture targets unwanted warmth and brassiness without compromising softness, manageability, or overall hair health. Lightweight yet deeply nourishing, it integrates seamlessly into hair care routines, offering salon-quality results at home. The key to its toning power lies in the purple pigments, which neutralize yellow and brassy undertones that naturally develop in lighter hair shades. Unlike traditional toning shampoos that often leave hair dry or brittle, Olaplex No. 4P incorporates Olaplex Bond Building Technology to maintain structural integrity during cleansing. This dual-action approach allows hair to retain vibrancy and tonal precision while remaining soft, smooth, and easy to style. The formula cleanses gently yet thoroughly, preserving both color and hair health. Bond repair and internal strengthening distinguish Olaplex No. 4P from conventional toning shampoos. By addressing hair damage at a molecular level, the shampoo helps reinforce strands compromised by bleaching, coloring, or repeated heat styling. This internal support not only enhances hair strength but also improves elasticity and resilience, reducing the likelihood of future breakage. The sulfate-free base ensures a gentle cleansing experience while maintaining the hair's natural moisture balance. Olaplex No. 4P provides flexible use, suitable for regular maintenance or more targeted toning sessions, depending on desired intensity. With consistent application, hair appears cooler in tone, brighter in finish, and healthier overall.