OLAPLEX  No. 4P Blonde Hair Hydrating & Brightening Purple Toning Shampoo

*Verdict: ⭐⭐⭐⭐⭐ (5/5)** If you're a highlighted blonde fighting the relentless battle against brassiness and dreaming of cool, ashy tones, Olaplex No. 4P is likely the solution you've been searching for. It truly is **fantastic** for maintaining that perfect, non-brassy blonde.

**Here's why it shines for ashy blonde maintenance:**
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1. **Exceptional Toning Power:** This isn't a subtle purple shampoo. No. 4P packs a serious punch of violet pigment. It effectively neutralizes unwanted warm, yellow, and orange tones like few others on the market. A single use leaves hair noticeably cooler, brighter, and significantly less brassy.
2. **Maintains Ash Perfection:** It's not just about *removing* brass; it's about *preserving* the ashy tone you (and your colorist) worked hard to achieve. Regular use (1-2 times a week) acts as a powerful maintenance tool, extending the life of your cool blonde color between salon visits and touch-ups.
3. **Olaplex Bond Building:** This is the magic ingredient (literally, Bond Building Technology) that sets it apart from most purple shampoos. While neutralizing brass, it's *also* helping to repair and strengthen the internal bonds in your hair damaged by lightening. This means healthier, stronger hair alongside better color – a rare and valuable combination. You're not just depositing color; you're actively improving hair integrity.
4. **Effective Yet Manageable:** While potent, it's generally easier to control than some ultra-strength purple shampoos notorious for turning hair gray or purple if left on too long. Follow the instructions (start with 1-3 minutes, adjust based on need), and you'll achieve beautiful ash without accidental over-toning.
5. **Improved Texture:** Unlike many pigmented shampoos that can feel stripping or drying, No. 4P lathers well and leaves hair feeling surprisingly clean, soft, and manageable. The bond-building likely contributes to this healthier.

**How I Use It for Optimal Ashy Results:**
1. Use 1-2 times per week *max*, replacing my regular shampoo on those days.
2. Apply to *wet* hair, emulsify well, and distribute evenly. Pay extra attention to the most porous/brassy areas (often mid-lengths to ends).
3. **Start with 3-5 minutes** processing time. If brass is stubborn, I might go up to 8 minutes the *next* wash, but I'm cautious.
4. Rinse VERY thoroughly until the water runs clear.
5. **Always** follow with a deeply hydrating conditioner or mask – No. 5 is my go-to.

**Final Thoughts:**
Olaplex No. 4P Purple Shampoo is an **outstanding investment for ashy and cool-toned blondes**. Its powerful toning capability effectively banishes brassiness, while the signature bond-building technology actively works to repair lightening damage. This dual-action approach makes it far superior to most purple shampoos that only deposit color.

If your priority is maintaining a beautiful, cool, non-brassy blonde and keeping your highlighted hair as healthy as possible, **No. 4P is absolutely worth it. ** It's become a non-negotiable staple in my haircare routine, and the results speak for themselves – vibrant, cool-toned, ashy blonde that stays true. Highly recommended! إقرأ أقلRead less about review stating No. 4P Purple Shampoo Review: A Holy Grail for Ashy Blonde Maintenance

Great product hair feels soft and condition and good color no more yellow

Does what it says.

Amazing lovely shampoo, great for blonde hair.

Always use this to stop my hair looking brassy
Arrived on time and in good order

Made my hair blonde again!

Best purple shampoo, makes my hair so blonde and soft

Excellent products

Love this one - keeps my hair healthy and well maintained!

Great product it’s worth the money. Got my hair done and the hairdresser didn’t tone it and I found it quite yellow so I left this on for a good 10-15 minutes and it toned the blonde so nicely