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.
This shampoo makes my hair strong, full, frizz-free, and worth every penny.
Using this shampoo, my hair is stronger, fuller, less frizzy, and though pricey, completely worth the investment for its fantastic results.
I noticed more volume and hope it helps my thinning hair with this new shampoo.
I tried this new shampoo and immediately observed more volume in my hair. It gives me confidence that it will address my thinning hair issues effectively over time.
After years with Dove, I strongly recommend it for smooth, shiny hair post-shampoo.
With years of Dove shampoo use, I endorse it for smooth hair post-wash, as it consistently delivers softness, shine, and easy manageability that I love.
I love how this shampoo's light scent conditions my hair, keeping it soft and non-dry for days.
I highly recommend this shampoo because its gentle light scent and superb conditioning make my hair remain soft, shiny, and hydrated for days after every wash, improving my overall hair health.
I love how this shampoo lathers well and leaves my hair soft and shiny, hoping it reduces thinning.
I found this shampoo lathers beautifully, leaving my hair soft and shiny with a great scent from the large bottle, and I hope it aids in reducing hair thinning with continued use.
I loved the shampoo's results but found the bottle too small for the price, making it hard to justify repurchasing.
I truly enjoyed how this shampoo improved my hair's health and appearance, yet the high price for such a limited quantity left me disappointed and unlikely to buy it again regularly.
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