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.
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I love how Dr. Squatch's shampoo uses natural ingredients to leave my hair soft, clean, and refreshed after every use.
I found this shampoo's honey aroma mild and pleasant; it performs well for hair care.
I have been using this shampoo and conditioner regularly, and I appreciate the gentle honey smell that isn't too strong. It leaves my hair clean and soft, but I would prefer a more pronounced fragrance for better satisfaction.
After using harmful shampoos, I now prefer organic sulfate-free for healthier hair.
After years of using damaging shampoos, I switched to organic sulfate-free products and saw significant improvements in my hair health.
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After testing various shampoos for my wavy hair, I confirm this product minimizes hair loss and enhances thickness, leading to healthier, fuller locks that I love.
This shampoo effectively thickens my hair, making it the best I've tried with a long-lasting bottle.
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After chemical damage, this shampoo restored my hair's softness and smoothness effectively.
Chemical damage left my hair dry, but this shampoo made it soft and smooth quickly. I will use it forever.
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