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OlaplexNo. 4P Blonde Enhancer™ Toning Shampoo
Product Description
This ultra-concentrated purple shampoo reduces breakage and hydrates as it cleanses and tones from roots to ends. Use No.4P to neutralize brassy hair and yellow tones for brighter, softer, stronger blond hair, gray hair, or highlighted hair. Effective on natural and color-treated hair.
Clinically Proven
3X brighter hair*
91% agree hair was less brassy**
52% less breakage after one use***
*Compared to top purple shampoos.
**Based on an independent consumer perception study of 60 women with bleached/color-treated blonde hair.
***After 1 use when used as a system, clinically tested.
KEY BENEFITS
✓ Neutralizes brassiness for brighter hair
✓ Strengthens hair and repairs damage
✓ Hydrates and softens hair
B&A Mireya
BEFORE
AFTER
Unretouched Images*
*Results may vary. Results achieved by cleansing with N°.4P Blonde Enhancer™ Toning Shampoo, conditioning with N°.5P Blonde Enhancer™ Toning Conditioner, and applying N°.9 Bond Protector Nourishing Hair Serum to damp hair before styling.
B&A Laticia
BEFORE
AFTER
Unretouched Images*
*Results may vary. Results achieved by cleansing with N°.4P Blonde Enhancer™ Toning Shampoo, conditioning with N°.5P Blonde Enhancer™ Toning Conditioner, and applying N°.9 Bond Protector Nourishing Hair Serum to damp hair before styling.
B&A Piper
BEFORE
AFTER
Unretouched Images*
*Results may vary. Results achieved by cleansing with N°.4P Blonde Enhancer™ Toning Shampoo, conditioning with N°.5P Blonde Enhancer™ Toning Conditioner, and applying N°.9 Bond Protector Nourishing Hair Serum to damp hair before styling.
Clinically Proven
3X brighter hair*
91% agree hair was less brassy**
52% less breakage after one use***
*Compared to top purple shampoos.
**Based on an independent consumer perception study of 60 women with bleached/color-treated blonde hair.
***After 1 use when used as a system, clinically tested.
KEY BENEFITS
✓ Neutralizes brassiness for brighter hair
✓ Strengthens hair and repairs damage
✓ Hydrates and softens hair
Directions
1. Distribute evenly between palms first.
2. Apply to wet hair. Lather fully.
3. Leave on for 1-3 minutes. Rinse well.
For more intense toning, leave on hair up to 5 minutes. Follow with No.5P Blonde Enhancer™ Toning Conditioner for maximum toning results.
Use weekly or as-needed.
Test results
Results With One UseB&A Mireya
BEFORE
AFTER
Unretouched Images*
*Results may vary. Results achieved by cleansing with N°.4P Blonde Enhancer™ Toning Shampoo, conditioning with N°.5P Blonde Enhancer™ Toning Conditioner, and applying N°.9 Bond Protector Nourishing Hair Serum to damp hair before styling.
B&A Laticia
BEFORE
AFTER
Unretouched Images*
*Results may vary. Results achieved by cleansing with N°.4P Blonde Enhancer™ Toning Shampoo, conditioning with N°.5P Blonde Enhancer™ Toning Conditioner, and applying N°.9 Bond Protector Nourishing Hair Serum to damp hair before styling.
B&A Piper
BEFORE
AFTER
Unretouched Images*
*Results may vary. Results achieved by cleansing with N°.4P Blonde Enhancer™ Toning Shampoo, conditioning with N°.5P Blonde Enhancer™ Toning Conditioner, and applying N°.9 Bond Protector Nourishing Hair Serum to damp hair before styling.
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)
This list of ingredients may be subject to change, please consult the packaging of the product purchased.
See more...
Rated 2 out of
5
by
Vanissa from
Not too impressed
Expected a lot more. Stained my fingers more than it stuck to my hair. VERY DRYING
Date published: 2026-02-25
Rated 5 out of
5
by
Cristiana from
Love this
Love this shampoo, after trying other brands, and getting purple stains on my hair, this olaplex works so good, the pigmentation is amazing, and I don’t get any stains from it, the colour is uniform.
Date published: 2026-02-07
Rated 1 out of
5
by
LJNF from
Very disappointed
Having tried other toning shampoos I was really looking forward to trying this - when I first used it I was shocked to see that my hands had turned purple and the shampoo did not lather at all - seeing the damage it had done to my hands I stopped using it immediately and have returned the product and was not happy that I had to pay to return this after the damage it had done
Date published: 2025-08-31
Rated 5 out of
5
by
Ibolya from
Olaplex
It is the best purple shampoo on market! It takes away brassiness from your hair and makes it soft.
Date published: 2025-06-30
Rated 4 out of
5
by
Hazal from
Too expensive for average product
It is a good shampoo but probably too expensive for what it does
Date published: 2025-06-04
Rated 5 out of
5
by
Shir from
great features!
i love this product made my hair shiny and my curls bright and beautiful the pigmant of my hair is beautiful
Date published: 2025-05-31
Rated 5 out of
5
by
Nyrah from
Game changer!
Lifts the hair really well and removes yellow tones works really quickly would recommend
Date published: 2025-05-16
Rated 4 out of
5
by
Zinovi from
amazing product
felt like i had got my hair freshly dyed again after coming out the shower!
Date published: 2025-04-23
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