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'm amazed: this shampoo cut hair loss and frizz, hair is soft.
I chose this natural EWG shampoo for hair loss and frizz; it worked wonders, making my hair soft and smooth.
With this shampoo, my hair stays oil-free and my scalp feels hydrated daily.
This shampoo effectively controls oil in my hair and moisturizes my scalp, resulting in fresh, healthy hair all day long without any dryness or greasiness.
I achieved silky soft hair with this shampoo despite hard water challenges.
This shampoo transformed my frizzy hair to silky soft with hard water. A small amount lathers well; I use weekly for healthier hair and less breakage, and it's worth the price.
I highly recommend this shampoo as it transformed my fragile, breakage-prone hair.
My hair was fragile and broke easily, but this shampoo strengthened it, controlled humidity, and my stylist saw results fast.
This shampoo leaves my hair soft and smells wonderful; I'd buy it.
This shampoo gives me soft hair and a nice fragrance. Although the pump didn't work well, I'd purchase it again for the benefits.
I gained incredible volume and fuller-looking hair with this shampoo after proper use.
Using this shampoo correctly gave me amazing volume and made my thinning hair look fuller and healthier, boosting my confidence immensely.
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