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 found this shampoo lacking in quick scalp clarification after initial uses.
This shampoo failed to clean my scalp effectively after two uses; it may work with consistent application over time.
I love how this shampoo's natural ingredients leave my hair clean and refreshed daily.
Using this shampoo has enhanced my routine; the refreshing aroma and safe, Korean-made ingredients ensure my hair stays soft and revitalized, despite minor packaging flaws that don't overshadow the benefits.
My hair breaks less with this shampoo, feels great and lathers well.
This shampoo reduces my hair breakage and loss, lathers nicely with a good scent, but doesn't help frizz in humidity.
I love that it lathers well and cleans thick curly hair effectively.
I found this shampoo ideal for thick curly hair as it lathers superbly and cleans thoroughly with a great scent and value.
I love how this shampoo improved my hair after a brief dry phase and smells great.
At first, my hair felt dry and odd, but after adjustment, this shampoo works wonders with a pleasant scent I adore daily.
I found the perfect 2-in-1 shampoo for gray hair that gives shine.
I love this 2-in-1 shampoo for gray hair because it makes my hair soft and shiny, saves time in my routine, and suits my active lifestyle, though I wish the bottle was larger.
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