Hair
Olaplex No.4P Blonde Enhancer Purple Shampoo — 250 mL Toning Shampoo
Product description
Item display volume: 250.0 milliliters.
This product is an ultra-concentrated purple shampoo created to cleanse, tone and help reduce breakage from roots to ends. Violet toning agents target brassy and yellow tones to refresh blondes, highlights and gray hair while the formula also seeks to maintain hydration and softness after washing. It is suitable for both natural and color-treated hair and for a range of textures.
The bottle contains a single 250 mL (approx. 8.5 fl oz) dispensing container of No.4P Blonde Enhancer. The concentrated nature means only a small amount is required per wash. To use, apply to wet hair, work into a lather focusing on brass-prone areas, leave for an appropriate short period to tone (timing depends on desired intensity), then rinse thoroughly. For best results alternate with a regular or clarifying wash as needed and avoid excessive repeat applications close together to prevent unwanted purple casts.
Pros
- Effectively neutralizes brass and yellow tones
- Concentrated — small amount per use
- Designed to hydrate while toning
Cons
- Can over-tone if used too frequently
- May dry hair if left on too long
- Requires careful use on delicate or textured strands
VerdictA focused toning shampoo that neutralizes unwanted warm tones and supports visibly softer, stronger blonde or gray hair. Its concentrated violet pigments deliver noticeable results with minimal product, while the formula aims to hydrate rather than strip. Best used sparingly and with care on delicate or textured hair to avoid over-toning.
Reviews
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R. M. Witt 5/5
Works well but don’t overuse
Reduces brass on blonde highlights effectively. Warning: I applied it twice in short succession and some older highlights took on a purple tint. Not terrible, just unexpected.
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Judy 5/5
Simply the best purple shampoo
Top-tier purple shampoo. Cleans without residue and preserves highlights. I use it every one to two weeks.
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NJG 5/5
Effective on coily hair and greys with care
Brightens a grey streak on coily/loc textures and is highly pigmented, so a small amount is enough. I alternate with a clarifying wash to avoid over-drying and take care not to leave it on too long.
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Amanda 4/5
Arrived damaged—product itself is great
The shampoo performs excellently but the bottle arrived with a broken cap and no protective wrap. The 8.5 oz size is small, but only a little product is needed per use.
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Melissa Lower 5/5
Fast brass removal, no purple residue
Works quickly to cool yellow tones in a few minutes without leaving an ashy or purple cast if timed correctly. Lathers well and rinses clean; hair feels conditioned afterward.
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Callie 5/5
Worth the splurge on stylist recommendation
Thought all purple shampoos were the same until my stylist suggested this one. One wash made an immediate, noticeable difference—definitely worth trying.
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Lourdes Jimenez 5/5
Finally delivered the results I wanted
Hands down the best purple shampoo/conditioner combo I’ve tried. Gives beautiful tone without drying. A little goes a long way, so it’s worth the cost.
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Jen Shirley 5/5
Keeps tone salon-fresh
Excellent purple shampoo. Leaves hair toned and soft when used with its conditioner. Helps maintain a salon-fresh look between appointments.
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Skyhooks 5/5
Does a great job on blonde hair
Keeps my blonde looking fresh and the scent is pleasant. Works well as part of my regular routine.
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Yadary Pérez 5/5
Brightens and repairs without drying
Neutralizes brassy tones from the first use while keeping hair hydrated. The concentrated formula corrects color and helps strengthen chemically treated strands for a healthy, luminous finish.
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Elke Paixao 5/5
Expected more
Very pigmented, which is good for toning, but I found my hair felt a bit dry after use. Gentle follow-up conditioning helps.
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