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What it is OLAPLEX No.4P is a customizable toning shampoo that strengthens, softens and neutralizes unwanted yellow tones for brighter, more manageable hair. PH Balance: 6-7 Key benefits: - Highly concentrated purple shampoo - Neutralize unwanted yellow tones - Gentle enough for frequent use
How to use:
Apply to wet hair. Lather fully & let process 1-3 minutes. Rinse. For more intense toning, leave on up to 5 minutes.
TIP: Remove product buildup with No4 Bond Maintenance Shampoo prior to using No4P.