No.4P repairs, cleanses, and tones with patented Olaplex technology for all blondes, lightened, and grey hair. It neutralises brassiness and yellow tones while brightening the blonde. It also hydrates, leaving you with happy, healthy hair.

Inspired by salons and proven by science, the No.4P Blonde Enhancer Toning Shampoo combines a high amount of pigment concentration with bond-building technology and is highly concentrated to deliver 3X brighter results, yet gentle enough for frequent use.

Benefits:

• Repairs, cleanses and tones blonde hair
• Neutralises brassiness and yellow tones 
• Brightens, hydrates and leaves hair healthy
• Can be used frequently
• Scientifically proven 
• PH balanced
• Paraben free, sulphate free, gluten free
• Vegan and cruelty free