Olaplex No.4P Blonde Enhancer Toning Shampoo 8.5 oz

Maintain brighter, cooler toned blonde hair with Olaplex No.4P Blonde Enhancer Toning Shampoo 8.5 oz, a professional strength purple shampoo designed to neutralise brassiness while strengthening, hydrating, and restoring shine. Powered by patented OLAPLEX Bond Building Technology™, this sulfate free toning shampoo helps repair damaged hair bonds while visibly brightening blonde, gray, silver, and highlighted hair after just one wash. 

Unlike many purple shampoos that can leave hair dry or over toned, Olaplex No.4P combines highly concentrated violet pigments with bond repair technology to tone evenly while maintaining softness and manageability. The formula gently cleanses without stripping moisture and helps improve overall hair texture over time.

Specially formulated for blonde, lightened, silver, gray, and chemically treated hair, this highly pigmented shampoo helps counteract yellow and orange tones caused by fading, heat styling, hard water, and environmental exposure. Beauty editors at Byrdie praised the shampoo for effectively removing brassiness while leaving hair softer and brighter after use.

Key Benefits

• Neutralises yellow and brassy tones
• Brightens blonde, gray, and silver hair
• Helps strengthen damaged hair bonds
• Repairs and hydrates chemically treated hair
• Adds softness, shine, and manageability
• Highly concentrated purple toning formula
• Sulfate free and color safe
• Suitable for coily, curly, straight, and wavy hair
• Vegan and suitable for chemically treated hair
• Helps maintain salon fresh blonde tones

Why You’ll Love It

Unlike traditional purple shampoos that can feel drying or harsh, Olaplex No.4P balances toning with hydration and hair repair support.

Beauty reviewers at Byrdie described it as salon quality toning at home because of how effectively it removed brassiness while still leaving the hair soft and healthy looking. One reviewer said it “completely removed any and all signs of brassiness” after use.

Experts featured by Vogue also highlighted Olaplex No.4P as one of the best purple shampoos for gray and blonde hair because it tones while helping strengthen weakened hair bonds.

Many users especially appreciate that the shampoo helps brighten blonde hair without leaving the hair overly purple, rough, or stripped of moisture.

Ingredients

Main ingredients include:

• Bis-Aminopropyl Diglycol Dimaleate (OLAPLEX Bond Building Technology™)
• Violet Pigments
• Glycerin
• Betaine
• Sodium Cocoamphoacetate
• Conditioning Agents
• Hydrating Hair Care Complexes
• Citric Acid
• Antioxidant Hair Conditioning Ingredients

These ingredients work together to tone brassiness, strengthen hair, improve hydration, and maintain smoother healthier looking blonde hair.

How to Use

1. Apply evenly onto wet hair
2. Massage gently into the scalp and lengths
3. Leave on for 1 to 3 minutes for regular toning
4. For stronger toning results, leave on for up to 5 minutes
5. Rinse thoroughly
6. Follow with conditioner for added hydration
7. Use 2 to 3 times weekly or as needed depending on brassiness level

Who Is It Suitable For?

• Blonde and highlighted hair
• Gray and silver hair
• Bleached and chemically treated hair
• Hair with yellow or brassy tones
• Straight, wavy, curly, and coily hair
• People wanting brighter cooler toned blonde hair

Frequently Asked Questions

What does Olaplex No.4P Blonde Enhancer Toning Shampoo do?

It helps neutralise unwanted yellow and brassy tones while strengthening, hydrating, and brightening blonde, silver, gray, and lightened hair.

Is it suitable for gray hair?

Yes, the purple pigments help brighten gray and silver hair while reducing yellow discoloration.

Will it dry out the hair?

Unlike many purple shampoos, the formula is designed to hydrate and soften while toning the hair.

How often should it be used?

Most users apply it 2 to 3 times weekly or whenever brassiness starts to appear.

Is it safe for color treated hair?

Yes, the formula is sulfate free, vegan, and suitable for chemically treated or bleached hair.