OLAPLEX No.4P Hair Brightening & Toning Purple Shampoo
by OLAPLEX · hair_care
Editor's Take
Patented bond repair in a purple shampoo , Olaplex brings its disulfide technology to a toning formula that actually treats the strand while it corrects the color.
Four-pillar formula scores
- Efficacy: 8.5 / 10
- Modern Tech: 8.0 / 10
- Clean Beauty: 4.8 / 10
- Sustainability: 6.8 / 10
The Verdict
This is one of the few purple shampoos that does more than deposit pigment. The Bis-Aminopropyl Diglycol Dimaleate sits at active levels, meaning the bond-repair claim is real, not marketing. The Acid Violet 43 handles brassiness fast, and the sulfate-free surfactant base keeps the cleanse from stripping. The trade-off: synthetic fragrance, Phenoxyethanol, and a handful of petrochemical polymers that clean-beauty shoppers will notice. Worth it if you want toning and structural repair in one step, especially on chemically treated hair that needs both.
Full INCI list
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).