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 fixed my oily, frizzy hair, bringing back my high school look.
I am so happy that this shampoo cured my oily and frizzy hair, returning it to my high school glory days.
I love Davines but Nou Nou shampoo suits my fine hair best.
As a fine-haired user, I found Davines shampoo heavy. Nou Nou is ideal for fine straight colored hair, providing bounce.
I love how this shampoo makes my hair soft and manageable daily.
This shampoo made my hair soft and manageable. My family uses it regularly, and my mother adores the rice water set for its benefits.
This shampoo makes my hair white, soft, and the color pops again.
I love how this shampoo maintains my silver hair's whiteness and shine, avoids lilac tones, makes it soft and voluminous, and has a great scent that surprises me every time.
I use this shampoo daily and it keeps my hair moisturized while smelling amazing.
I highly recommend this shampoo because it smells fantastic, doesn't dry out my hair even with frequent use, and is very affordable for daily routines.
My scalp feels wonderfully stimulated and refreshed by this shampoo in summer.
This shampoo is perfectly ideal for summer weather as it stimulates my scalp, feels refreshing, and has a fantastic scent that I prefer over generic brands.
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This shampoo cured my flaky scalp better than prescriptions, leaving clean, great-smelling hair.
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