If you want to preserve your blonde hair color and its beauty, Olaplex Blonde Enhancer Toning Shampoo no. 4P is the right thing! This shampoo contains a concentrated formula with violet pigments that tones your hair during washing. Blonde Enhancer Toning Shampoo no. 4P from Olaplex is a cleansing shampoo that both repairs the hair and ensures that it retains its cool tone. With this shampoo, you can keep the orange and yellowish shades in check, as the violet pigments in the shampoo neutralize warm tones. Application: * Apply to wet hair. * Lather the shampoo and then rinse the hair with water. * Must be used approx. 2-3 times a week or as needed. Benefits: * Cleansing shampoo * Can be used in blonde, bleached and gray hair * Neutralizes yellowish tones in light hair * Moisturizing * Gives the hair a beautiful cool glow * Completely sulfate-free