OLAPLEX N°4P Blonde Enhancer Toning Shampoo is a specialized hair care product designed for blonde hair. Featuring patented bond-building technology, this formula works to relink broken disulfide bonds, enhancing hair strength and resilience. The shampoo effectively removes unwanted brassy tones while maintaining cool blonde shades and preventing color fading. It is suitable for all blonde hair types, including color-treated hair, and is vegan and free from harsh chemicals. Regular use helps reduce frizz, split ends, and breakage, leaving hair softer, shinier, and easier to manage. To use, apply to damp hair, massage gently, leave for one to three minutes depending on desired toning, and rinse thoroughly. For optimal results, follow with OLAPLEX No.5 Bond Maintenance Conditioner and integrate into a consistent hair care routine with other OLAPLEX products to support overall hair health and appearance.