Olaplex Blonde Enhancer Nº.4P Purple Toning Shampoo 250 mL — Neutralizes Brassiness & Strengthens

Olaplex Nº.4P Blonde Enhancer Purple Toning Shampoo is an ultra-concentrated purple cleanser that neutralizes brassiness while helping to strengthen and hydrate blond, gray, and highlighted hair.

Formulated with Olaplex’s patented bond-building chemistry, Nº.4P targets yellow and brassy tones as it gently cleanses from roots to ends. Its concentrated purple pigments deposit cool tones to brighten blonde and gray shades, while the bond-repairing technology supports hair resilience and reduces breakage. Designed for natural and color-treated hair, this shampoo works on all textures—coily, curly, wavy, and straight—so you can maintain salon-fresh color between appointments.

How does Nº.4P remove brassiness without over-drying hair?

Nº.4P balances tone correction with moisture by pairing purple pigments with Olaplex’s bond-repair system and conditioning agents. Instead of stripping, it cleanses while leaving hair soft and easier to detangle, reducing the brittle feel often caused by aggressive clarifying products.

• Ultra-concentrated purple pigments neutralize yellow tones.
• Bond-building chemistry helps repair and protect internal hair structure.
• Conditioning ingredients maintain hydration during cleansing.
• Formulated for repeated use when needed to maintain cool tones.

Will this shampoo work on my natural or color-treated blonde?

Yes—Nº.4P is effective on both natural and color-treated blondes as well as on gray and highlighted hair. Its formula is tuned to counteract unwanted warmth while supporting hair integrity, so you get tone correction without sacrificing strength.

• Safe for salon-interpreted and at-home color-treated hair.
• Suitable for natural blonde and gray hair seeking cooler tones.
• Helps preserve highlights by reducing brassiness between color services.
• Works across hair textures from fine straight to thick coils.

How often should I use Olaplex Nº.4P to maintain my color?

Frequency depends on how quickly your hair warms up and how intense you want the cool tone. Many users start with once a week and adjust to every 3–5 washes or more often for stubborn brassiness; always follow with a conditioner for best results.

• Start with once weekly, then increase if brassiness returns quickly.
• Rinse thoroughly and follow with a hydrating conditioner or Olaplex Nº.5.
• Use less frequently on very porous hair to avoid over-depositing pigment.
• Patch-test strand if unsure about desired toning intensity.

What benefits does Olaplex’s bond-building technology add?

Olaplex’s patented active ingredient works at a molecular level to reconnect disulfide bonds that can break during coloring, heat, and mechanical stress. Incorporating this chemistry into a toning shampoo helps strengthen hair while it corrects color, reducing breakage and improving texture over time.

• Reduces breakage by supporting internal hair structure.
• Improves manageability and softness after repeated use.
• Helps maintain salon color longevity alongside toning effects.
• Suits all hair textures and chemically treated fibers.

Who is this for? Olaplex Nº.4P is ideal for anyone with blonde, gray, or highlighted hair who wants to neutralize yellow or brassy tones while preserving hair strength and hydration. It’s a smart add-on for color-treated clients, those who use frequent heat styling, and people with naturally light or lifted hair seeking cooler, brighter results without harsh drying. If you prefer low-maintenance toning with professional-grade bond care, Nº.4P gives targeted purple pigments plus Olaplex’s restorative technology in a single 250 mL shampoo.

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)