Product Details

Olaplex No.4P Blonde Enhancer Toning Purple Shampoo is a highly concentrated, sulfate-free formula that cleanses, tones, and repairs while maintaining essential hydration. The rich, purple lather neutralizes unwanted yellow or brassy tones after just one use, leaving blonde, lightened, and grey hair noticeably brighter, softer, and shinier.

Powered by patented OLAPLEX Bond Building Technology™, No.4P strengthens and restores compromised hair from the inside out, ensuring lasting results without dryness. Its gentle pH-balanced formula protects against breakage and improves manageability, making it the ultimate toning shampoo for salon-quality blonde maintenance at home.

Key Benefits

• Neutralizes brassiness and yellow tones in blonde, lightened, and grey hair
• Repairs and strengthens damaged or compromised strands
• Delivers 3x brighter results compared to leading purple shampoos*
• Keeps hair hydrated and soft from roots to ends
• Sulfate-free, paraben-free, phosphate-free, and phthalate-free
• Vegan, cruelty-free, nut-free, and gluten-free
• pH balanced to protect hair health

Suitable For

• All blonde, lightened, highlighted, and balayaged hair
• Grey or silver hair that needs brightening and tone correction
• Hair prone to brassiness from heat styling, sun, or hard water
• Colour-treated or chemically processed hair

Directions For Use

1. Pre-wash with your usual shampoo to remove buildup and prepare hair.

2. Apply a small amount of Olaplex No.4P, working into a rich lather from roots to ends.

3. Leave on for 3–5 minutes, depending on the desired level of toning.

4. Rinse thoroughly, then follow with conditioner or hair mask.

5. Use weekly, or as needed to maintain bright, brass-free blonde.

Pro Tips

• Use gloves to avoid temporary staining on hands.
• For subtle toning, leave in for less than 3 minutes.
• Follow with Olaplex No.5 Bond Maintenance Conditioner for extra hydration.
• Alternate with your regular shampoo to avoid over-toning.

Ingredients

Water (Aqua/Eau), Sodium C14-16 Olefin Sulfonate, Cocamidopropyl Betaine, Glycerin, Sodium Cocoamphoacetate, Sodium Chloride, Acrylates Copolymer, Betaine, Phenoxyethanol, Fragrance (Parfum), Polyquaternium-7, Bis-Aminopropyl Diglycol Dimaleate, Guar Hydroxypropyltrimonium Chloride, Ethylhexylglycerin, Hexyl Cinnamal, Limonene, Citric Acid, Sodium Benzoate, Acid Violet 43 (Cl 60730).

*Although we try our best to ensure this list of ingredients is accurate however there may be product upgrades from time to time, or slight variants between different regions based on local laws, meaning the only definitive ingredient list is that which is printed on the product packaging.

Frequently Asked Questions

Q. How often should I use Olaplex No.4P Blonde Enhancer Shampoo?

A. Use once a week or as needed, depending on how quickly your hair develops brassiness. Alternate with a gentle shampoo for daily washing.

Q. Can Olaplex No.4P dry out my hair?

A. Unlike many purple shampoos, No.4P is bond-building and hydrating. It tones without stripping moisture, especially when followed with conditioner.

Q. Will it make my hair purple?

A. No. When used as directed, it neutralizes brassiness without staining hair. Leaving it on longer may create a cooler, icy blonde effect.

Q. Is Olaplex No.4P safe for colour-treated hair?

A. Yes. It’s specifically designed to protect and maintain salon colour while repairing damage.

Q. Can I use No.4P on natural grey or silver hair?

A. Absolutely. It enhances brightness, removes dullness, and keeps silver tones vibrant.

Q. Does No.4P replace my regular shampoo?

A. It can be used weekly as a toning treatment. For best results, alternate with your daily shampoo to balance cleansing and toning.

Q. What makes Olaplex No.4P different from other purple shampoos?

A. It combines powerful toning pigments with patented bond-repair technology, offering brightness and repair in one step.