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's scent amazing and long-lasting, making my hair smell great daily.
I tried this shampoo and was thrilled with its pleasant smell that stayed strong throughout the day. The high quality impressed me, and I plan to buy it again for my family's use.
After 12 years of daily use, my scalp is dandruff-free and healthy.
Over 12 years of daily use, this shampoo has cured my dandruff and healed my scalp completely, making it resilient even when I use other products during travel.
I use this shampoo for sensitive scalp; it's gentle, no residue, affordable.
This shampoo has transformed my routine by soothing my sensitive scalp without any irritation or residue buildup, all while being easy on my wallet and promoting healthy hair.
I love how this shampoo cleans my hair well and leaves it smelling fresh. It's budget-friendly and shipped fast.
This shampoo ensures my hair is clean and smells wonderful. My wife approves the scent, and I appreciate its affordable price coupled with surprisingly quick delivery service.
I value this shampoo for enhancing my fine hair's appearance through years.
My wife and I have used this shampoo for years, and it improves our hair's appearance. I find the conditioner excellent for my fine, thinning hair.
I found this shampoo great for short hair but not for my curly locks.
As a user with curly, fine, long hair, I discovered this 2-in-1 shampoo isn't for me, but it excels on short hair, leaving us both satisfied with the results.
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I love the light pear scent and how little shampoo I need for soft hair.
This shampoo makes my hair healthy, soft, and shiny with a subtle smell.
I found relief from itchy hair and skin with this no-scent shampoo.
I love this conditioner for soft hair at a great price with fast Amazon delivery.
This shampoo's smooth texture and aroma make my hair soft and refreshed.
I've used this shampoo for over a decade and love its reliable quality and great results.
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I found this shampoo that relieved my dry scalp and itching quickly in just three days.
I spend more on this shampoo for its Sweet tobacco scent that enhances my hair and face feel.
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