My white hair turned cool bright white, blending flawlessly with my skin tone—three compliments in a week! Strong purple formula delivers salon-quality results.
This shampoo turned my yellowish white hair into stunning icy brightness that harmonizes with my complexion. Noticed visible toning from the first wash—received three genuine compliments within days. The rich purple pigment works without overdrying. 10/10
This is a review from Amazon.com about product:
Olaplex No. 4P Blonde Enhancer Purple Toning Shampoo, Repairs, Hydrates, & Brightens All Blonde, Lightened, & Grey Hair, 8.5 fl oz

This made such a difference for my white hair! It went from warm to bright white and looks better with my skin. I have gotten three compliments on my hair since I started using the shampoo this week! As other users have commented, it is strong and I swear that I see a hint of purple, but whatever... It looks great! Highly recommend. Worth the money.
Shampoo Basics & Tips
How Purple Shampoo Neutralizes Yellow Tones
Purple shampoo contains violet pigments that counteract yellow/brassy tones through color theory. The color wheel shows purple (opposite yellow) neutralizes warm undertones, creating cooler hair shades. This explains the reviewer's "bright white" transformation.
Why Strong Formulas Matter for Gray/White Hair
Mature hair tends to be more porous, absorbing pigments faster. A "strong" formula (higher dye concentration) ensures effective toning. However, the user's "hint of purple" comment suggests brief application time prevents over-toning.
Skin Tone Harmony Achieved
Cool-toned hair (bright white) complements cooler skin undertones, while warm hues clash. The shampoo helped the reviewer achieve color harmony, evidenced by increased compliments about their overall appearance.
Economic Value of Professional Results
Compared to salon toning treatments ($80+ per session), quality purple shampoo ($15-$30) offers similar results with weekly use. The "worth the money" endorsement reflects this cost-benefit analysis.
I was skeptical but amazed as this shampoo regrew hair in weeks.
Initially doubtful, I used this shampoo and within two weeks, it restored my friend's hair from baldness, amazing me with its rapid effectiveness and leading me to advocate for it widely.
I love how this shampoo softens my hair for years with minimal product needed daily.
This shampoo has been my trusted choice for years because it consistently makes my hair feel soft and luxurious while requiring only a small amount per wash, which I find economical and effective for long-term hair care.
I regained baby hairs in two months using this shampoo, countering medication-induced thinning, and I'm thrilled.
I've used this shampoo for exactly two months and am overjoyed to observe new baby hairs growing, which is amazing since my medication leads to hair thinning; it effectively preserves my hair.
I highly recommend this shampoo for cleaning and moisturizing my dry hair effectively.
After bad experiences with shampoos that dried out my hair, I finally found one that cleans thoroughly while moisturizing, leaving it feeling luxurious and smelling great, which revives my dry hair perfectly.
This shampoo cured my husband's cradle cap and made his hair shiny.
This shampoo effectively treated my husband's cradle cap using natural ingredients. It left his hair shiny and is very affordable.
I like this shampoo's fragrance and price, but it didn't boost hair texture.
I enjoyed the scent and price of this shampoo. Its cruelty-free nature is excellent, but it didn't improve my hair's body.
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