Olaplex No. 4P is a purple toning shampoo designed for blonde, bleached, lightened, highlighted, or grey hair. Its violet pigments help neutralize unwanted yellow, brassy, or warm undertones, restoring a cooler, brighter tone. In addition to toning, the shampoo gently cleanses hair while using the brand?s bond maintenance technology to help keep hair strong, healthy, and soft, even after frequent coloring or lightening.
Ingredients
Because the full proprietary formula is not publicly disclosed, only general components and functionalities are known. Olaplex No. 4P combines the following:
- Violet toning pigments: Help counteract brassiness and neutralize yellow tones in blonde or grey hair
- Bond-repairing active (Olaplex bond maintenance technology): Helps preserve or repair internal hair bonds damaged by bleaching or coloring
- Gentle surfactants: Mild cleansers that clean hair and scalp without stripping natural oils
- Moisturizing and conditioning agents: Help maintain softness, hydration, and manageability
- Smoothing polymers: Help seal the cuticle, reduce frizz, add shine, and improve hair texture
Due to the proprietary nature of the formulation, a full ingredient list is not publicly available. The shampoo is designed to provide toning, cleansing, hydration, and bond care in one step.
How to Use
- Wet hair thoroughly.
- Apply a small amount of shampoo to hair and scalp.
- Massage gently into a lather.
- Leave on for 1?3 minutes, adjusting time based on desired toning intensity.
- Rinse thoroughly with lukewarm water.
- Use as needed, typically 1?2 times per week, in place of regular shampoo.
- Follow with a conditioner or hair mask to restore moisture and strengthen hair.
Benefits
- Neutralizes brassy, yellow, or warm tones for a cooler, brighter finish
- Gently cleanses without harsh stripping, suitable for processed hair
- Helps maintain and repair internal hair bonds, reducing breakage and damage
- Adds softness, smoothness, and manageability
- Helps hair remain healthy, strong, and shiny with regular color maintenance
- Maintains vibrant, cool-toned blonde, highlighted, or grey hair





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