A highly concentrated purple toning shampoo that gently cleanses while neutralizing brassiness and yellow tones. Powered by patented OLAPLEX Bond Building Technology™, No.4P strengthens, hydrates, and brightens blonde, grey, and highlighted hair for a cooler, cleaner, high-definition finish.
Transform Your Blonde with No.4P Blonde Enhancer™ Toning Shampoo.
Olaplex No.4P is a professional-strength purple shampoo designed to keep blonde, lightened, and grey hair bright, cool-toned, and healthy-looking between salon visits.
This ultra-concentrated formula tones and cleanses in a single step: it lifts away impurities while depositing controlled violet pigments to counteract yellow and brassy tones from roots to ends. At the same time, OLAPLEX Bond Building Technology™ helps repair and reinforce the hair structure, leaving lengths feeling softer, smoother, and stronger.
In this liter (1000ml) size, No.4P is ideal for frequent blondes, grey clients, and professional use where consistent, even toning is essential.
Why You’ll Love It
- Neutralizes brassiness and yellow tones for a brighter, cooler blonde or grey.
- Strengthens and repairs the hair fiber with OLAPLEX Bond Building Technology™.
- Hydrates and softens without stripping or over-drying the hair.
- Ultra-concentrated purple pigments allow you to control toning intensity by adjusting processing time.
- Gently cleanses the hair and scalp with a blend of coconut oil–derived surfactants.
- Suitable for natural and colour-treated blonde and grey hair.
- Safe for use on highlighted, balayage, and chemically treated hair.
Who This Shampoo Is Perfect For
- Platinum, icy, or cool-blonde hair.
- Highlighted or balayage-treated hair.
- Natural or coloured grey and silver tones.
- Clients who experience brassiness or yellowing between salon appointments.
- Fragile, processed hair needing both toning and bond-care in one step.
How to Use
- Distribute No.4P evenly between your palms before applying.
- Apply to wet hair and lather thoroughly from roots to ends.
- Leave on for 1–3 minutes for regular toning.
- For more intense toning, leave on for up to 5 minutes.
- Rinse well.
- Follow with Olaplex No.5P Blonde Enhancer™ Toning Conditioner for optimal hydration and even, long-lasting tone.
Use weekly or as needed, depending on your desired tone and how quickly your hair’s brassiness returns.
Patch Test Note (for safety copy if you want to keep it):
This product contains ingredients that may cause skin irritation in certain individuals. Perform a patch test according to the directions on the packaging before first use. Avoid contact with the eyes. Do not use it for dyeing eyelashes or eyebrows.
Key Benefits
Neutralizes Brassiness – Violet toning agents help counteract yellow and warm tones to keep blonde and grey shades clear and bright.
Strengthens & Protects- Bond Building Technology™ supports the hair’s internal structure to reduce breakage and improve resilience.Hydrates & Softens – Gentle cleansing agents and humectants work together to keep hair feeling comfortable, smooth, and touchably soft.
Key Ingredient Highlights
Violet Toning Agents – Deposit controlled purple pigments that balance unwanted yellow and brassy tones for a cooler overall finish.
Gentle, Coconut Oil–Derived Surfactants – Create an efficient yet mild lather that cleanses without overly stripping moisture from the hair or scalp.
Bis-Aminopropyl Diglycol Dimaleate – OLAPLEX’s patented bond-building molecule helps repair and protect damaged hair bonds.
Glycerin & Betaine – Humectants that attract and retain moisture, supporting softness and flexibility.
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