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 love how this shampoo makes my thick hair soft and moisturized for days with no buildup.
After my hairdresser recommended it, I bought this shampoo for my thick hair. It lathers well, uses little product, and leaves hair soft and moisturized for three days with no buildup.
I was skeptical but this shampoo colored my gray hairs shiny black in just ten minutes effortlessly.
Initially doubtful, I used this shampoo and it turned my gray hairs black quickly. I plan to purchase the chestnut brown version for consistent coverage and shine.
I am amazed by this shampoo's repairing effects on my bleached hair, improving its condition with every wash.
After using this repairing shampoo, I notice my bleached hair is in much better condition. It was damaged but now looks healthy, and I reach for it every time I wash my hair.
After one week, this shampoo eliminated my dandruff and stopped the itching completely.
I suffered from scalp dandruff and dryness for years. This shampoo worked in one week: no flakes, no itch, no hair loss, and it doesn't dry my hair at all.
I love how this shampoo smooths my frizzy grey hair, but the scent limits my daily use.
Using this shampoo has truly improved my old frizzy grey hair by making it softer and more manageable, though the overpowering scent prevents me from enjoying it daily as much as I would like to.
I use this shampoo religiously and it promotes renewed hair growth effectively, transforming my hair health.
Although the product arrived leaking, I can confirm this shampoo works wonders for hair growth when used consistently, leading to healthier and thicker hair that I love.
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I recommend this shampoo for yellowing control and pleasant scent, despite bottle flaws.
I love how this shampoo adds body to my fine hair, and I rotate it for best results.
I use this shampoo and my kids' hair smells amazing for days.
I love the great scent of this shampoo, but it doesn't keep my hair clean as long as others.
I always trusted Bed Head shampoo, but the recent purchase disappointed me.
I appreciate the shampoo's durability, foam, and natural ingredients for ideal consistency.
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