Olaplex
No.4P Blonde Enhancer Toning Shampoo
Olaplex No.4P Blonde Enhancer Toning Shampoo — the sought-after shampoo shoppers search dupes for.
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Ranked dupes
Best alternatives to No.4P Blonde Enhancer Toning Shampoo
Schwarzkopf
Good Bye Yellow Neutralizing Bonding Wash
4.9 (8k)Combines bonding technology with purple pigment neutralization — mirroring Olaplex No.4P's bond-care + toning dual action at a fraction of the price, with a stellar 4.9 rating.
Amika
Bust Your Brass Cool Blonde Shampoo
4.8 (4k)Delivers targeted brass-neutralizing cool purple pigments with nourishing ingredients, closely replicating Olaplex No.4P's toning effect at $11 less and a top 4.8 rating.
Pureology
Strength Cure Blonde Shampoo
4.6 (4k)Sulfate-free formula that combines strengthening and violet toning for blonde hair, paralleling Olaplex No.4P's repair-meets-tone philosophy at nearly the same price point.
Redken
Color Extend Blondage Shampoo
4.6 (6k)Triple acid complex + intense violet pigments deliver professional-grade brass neutralization and color care comparable to No.4P at a much lower price.
Redken
Color Extend Blondage Color Depositing Shampoo
4.6 (6k)Pro-grade triple acid complex with heavy purple pigment deposit neutralizes brassiness just like No.4P, at nearly half the price.
Moroccanoil
Blonde Perfecting Purple Shampoo
4.6 (9k)Argan oil-infused purple shampoo that tones and nourishes blonde hair similarly to No.4P's enhancing formula, priced $4 less with a strong 4.6 rating.