Olaplex No. 4P Toning and Strengthening Shampoo

No.4P Blonde Enhancer Toning Shampoo No.4P Blonde Enhancer Toning Shampoo is a toning and strengthening shampoo for bleached, blonde and grey hair. It moisturises, restores, strengthens and softens the hair, neutralising unwanted yellow tones for manageable and shiny hair.
The sulphate-free and highly concentrated formula allows you to restore the structure of damaged hair from within. The longer the use, the more pronounced the result.