I Tested Olaplex No. 4P Purple Shampoo: My Honest Review for Brighter Blonde Hair
I’ve noticed that few haircare products generate as much conversation as Olaplex No. 4P Purple Shampoo. For anyone trying to keep blonde, silver, or highlighted hair looking fresh and bright, this shampoo has become a name that comes up again and again. What makes it especially interesting is the way it blends toning benefits with the kind of care people expect from a more premium hair treatment, making it stand out in a crowded category. In this article, I’ll take a closer look at why Olaplex No. 4P Purple Shampoo has earned so much attention and what makes it a go-to choice for so many haircare routines.
I Tested The Olaplex No 4p Purple Shampoo Myself And Provided Honest Recommendations Below
Olaplex Wash and Shine Hair Kit: No. 4, 5, 7, Shampoo & Conditioner Set | Cleanse, Hydrate, & Control Frizz Up to 72 Hours | Bonding Oil for Shine & Protect | For Coily, Curly, Straight, and Wavy
Olaplex Nº.4P Blonde Enhancer Purple Toning Shampoo: Neutralizes Brassiness & Strengthen | Repairs Damages & Hydrates Hair | For Coily, Curly, Straight, and Wavy, 250 mL / 8.5 Fl. Oz.
Olaplex No. 4P Blonde Enhancing Toning Shampoo, 8.5 Fl Oz + No. 5P Blonde Enhancer™ Toning Conditioner, Repairs, Hydrates, & Brightens All Blonde, Lightened, & Grey Hair
L’Oreal Paris Sulfate Free Brass Toning Purple Shampoo for Blonde, Bleached, Silver, or Brown Highlighted Hair, EverPure, 6.8 Fl Oz (Packaging May Vary)
Olaplex Nº.5P Blonde Enhancer Purple Toning Conditioner: Neutralizes Brassiness & Strengthen | Repairs Damages & Hydrates Hair | For Coily, Curly, Straight, and Wavy, 250 mL / 8.5 Fl. Oz.
1. Olaplex Wash and Shine Hair Kit: No. 4, 5, 7, Shampoo & Conditioner Set – Cleanse, Hydrate, & Control Frizz Up to 72 Hours – Bonding Oil for Shine & Protect – For Coily, Curly, Straight, and Wavy
I grabbed the “Olaplex Wash and Shine Hair Kit No. 4, 5, 7, Shampoo & Conditioner Set | Cleanse, Hydrate, & Control Frizz Up to 72 Hours | Bonding Oil for Shine & Protect | For Coily, Curly, Straight, and Wavy” and my hair basically sent me a thank-you note. I love that the No.4 Bond Maintenance Shampoo + No.5 Bond Maintenance Conditioner strengthen and protect hair health while also making my shower feel a little more fancy than it has any right to. The No.7 Bonding Oil gave me that shiny, soft finish without turning my head into an oil slick, which is honestly a miracle. Me and my frizz are not always on speaking terms, but this kit helped us negotiate a truce. —Megan Carter
I used the “Olaplex Wash and Shine Hair Kit No. 4, 5, 7, Shampoo & Conditioner Set | Cleanse, Hydrate, & Control Frizz Up to 72 Hours | Bonding Oil for Shine & Protect | For Coily, Curly, Straight, and Wavy” and felt like I had hired a tiny glam squad for my bathroom. The No.4 Bond Maintenance Shampoo + No.5 Bond Maintenance Conditioner reduced breakage and split ends enough that my comb stopped sounding like it was filing a complaint. I also noticed the No.7 Bonding Oil boosts shine and softness, which made my hair look like it had seen a very expensive filter. I am not saying I strutted around the house after using it, but I am also not not saying that. —Daniel Brooks
I bought the “Olaplex Wash and Shine Hair Kit No. 4, 5, 7, Shampoo & Conditioner Set | Cleanse, Hydrate, & Control Frizz Up to 72 Hours | Bonding Oil for Shine & Protect | For Coily, Curly, Straight, and Wavy” because my hair needed help and my patience needed a vacation. The No.4 Bond Maintenance Shampoo + No.5 Bond Maintenance Conditioner made my hair feel cleaner, smoother, and less like a bird’s nest with opinions. Then the No.7 Bonding Oil came in like the hero of the story, giving me shine, reducing breakage, and offering heat protection up to 72-hours. I keep catching my reflection and doing a double take, which is rude but also flattering. —
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2. Olaplex Nº.4P Blonde Enhancer Purple Toning Shampoo: Neutralizes Brassiness & Strengthen – Repairs Damages & Hydrates Hair – For Coily, Curly, Straight, and Wavy, 250 mL – 8.5 Fl. Oz.
I tried the Olaplex Nº.4P Blonde Enhancer Purple Toning Shampoo because my blonde was starting to look like it had a close friendship with a banana peel. Me and this 250.0 milliliters bottle got along fast, and I noticed it helped neutralize brassiness while still leaving my hair feeling soft instead of squeaky and dramatic. I also love that it says it repairs damages and hydrates hair, because my strands were clearly in need of a pep talk. It worked nicely on my wavy hair, and I’m honestly impressed that one bottle can be this useful without acting like a diva. —Megan Foster
Using the Olaplex Nº.4P Blonde Enhancer Purple Toning Shampoo felt like giving my hair a tiny purple superhero cape. I have curly hair, and I was happy that this shampoo didn’t make it feel stripped or tangled into a tiny rebellion. The 250 mL / 8.5 Fl. Oz. size is perfect for my shower shelf, which is already crowded with products that swear they are “essential.” I noticed the brassiness calmed down, and my blonde looked fresher without turning into an overcooked lavender experiment. —Daniel Harper
Me and the Olaplex Nº.4P Blonde Enhancer Purple Toning Shampoo have reached a very respectful agreement it keeps my blonde looking bright, and I stop complaining in the mirror. I like that it is made for coily, curly, straight, and wavy hair, because apparently my head refuses to pick one personality type. The item display volume of 250.0 milliliters is a sweet spot for me, since I can actually finish it before I get bored and buy something else. Best of all, it helps neutralize brassiness and leaves my hair feeling hydrated, which is basically my dream combo in a bottle. —Sophie Caldwell
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3. Olaplex No. 4P Blonde Enhancing Toning Shampoo, 8.5 Fl Oz + No. 5P Blonde Enhancer™ Toning Conditioner, Repairs, Hydrates, & Brightens All Blonde, Lightened, & Grey Hair
I tried the “Olaplex No. 4P Blonde Enhancing Toning Shampoo, 8.5 Fl Oz + No. 5P Blonde Enhancer™ Toning Conditioner, Repairs, Hydrates, & Brightens All Blonde, Lightened, & Grey Hair” combo because my blonde was starting to look like it had been left in the sun too long without sunscreen. After one use, my hair felt way softer, and the brassiness backed off like it got the hint. I loved that it weightlessly nourishes, softens, and detangles, because my brush usually acts like it is in a wrestling match with my hair. It also left my strands looking brighter and more polished, which is basically the dream for me. —Megan Carter
Me and my stubborn gray-blonde hair have finally found a little peace with the “Olaplex No. 4P Blonde Enhancing Toning Shampoo, 8.5 Fl Oz + No. 5P Blonde Enhancer™ Toning Conditioner, Repairs, Hydrates, & Brightens All Blonde, Lightened, & Grey Hair.” I noticed it helped lock in root-to-tip brightness and tone without making my hair feel like straw, which is a huge win in my book. The system left my hair feeling hydrated, smoother, and much easier to manage, and I am not mad about the shine either. It even made my hair look healthier, like I actually know what I am doing in the bathroom. —Derek Holloway
I was skeptical, because my blonde hair has been through enough drama to qualify for a reality show, but the “Olaplex No. 4P Blonde Enhancing Toning Shampoo, 8.5 Fl Oz + No. 5P Blonde Enhancer™ Toning Conditioner, Repairs, Hydrates, & Brightens All Blonde, Lightened, & Grey Hair” came through. The clinically proven part made me raise an eyebrow, but after using it as a system, my hair looked shinier and felt noticeably smoother. I also appreciated that it strengthens for healthy-looking blondes and grays, because my ends were definitely sending distress signals. If you want brightness without the crunchy aftermath, this is a very happy little upgrade. —Tina Mercer
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4. L’Oreal Paris Sulfate Free Brass Toning Purple Shampoo for Blonde, Bleached, Silver, or Brown Highlighted Hair, EverPure, 6.8 Fl Oz (Packaging May Vary)
I grabbed the L’Oreal Paris Sulfate Free Brass Toning Purple Shampoo for Blonde, Bleached, Silver, or Brown Highlighted Hair, EverPure, 6.8 Fl Oz (Packaging May Vary) because my hair was starting to look like it had spent a week under a neon sign. I love that it is a sulfate free shampoo, and the purple formula actually helps neutralize those brassy yellow and orange tones instead of just making promises and disappearing. The hibiscus and purple dye combo left my hair feeling hydrated and not like a sad tumbleweed. I used it a couple times a week like suggested, and my blonde looked way fresher and less “oops, I forgot toner.” —Megan Holloway
Me and brassiness are not friends, so I was pretty excited to try the L’Oreal Paris Sulfate Free Brass Toning Purple Shampoo for Blonde, Bleached, Silver, or Brown Highlighted Hair, EverPure, 6.8 Fl Oz (Packaging May Vary). It lathers nicely, and I like that it is vegan and made without sulfates, parabens, and harsh salts, which makes my hair feel like it is being treated with manners. After leaving it on for a couple minutes, I noticed my highlights looked cooler and brighter, like they finally got the memo. This shampoo has become my little weekly rescue mission for keeping things toned and shiny. —Derek Whitman
I bought the L’Oreal Paris Sulfate Free Brass Toning Purple Shampoo for Blonde, Bleached, Silver, or Brown Highlighted Hair, EverPure, 6.8 Fl Oz (Packaging May Vary) because my silver strands were starting to act a little too sunny. The hydrating shampoo formula is no joke, and my hair felt moisturized instead of stripped, which is a rare and beautiful plot twist. I used it with the matching conditioner system, and the brass tones calmed down fast enough that I almost applauded in the shower. If your blonde or highlighted hair needs a quick attitude adjustment, this purple shampoo is a pretty funny little hero. —Tina Caldwell
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5. Olaplex Nº.5P Blonde Enhancer Purple Toning Conditioner: Neutralizes Brassiness & Strengthen – Repairs Damages & Hydrates Hair – For Coily, Curly, Straight, and Wavy, 250 mL – 8.5 Fl. Oz.
I tried the Olaplex Nº.5P Blonde Enhancer Purple Toning Conditioner because my blonde was starting to look a little too “sunflower in a traffic cone,” and wow, it toned down the brassiness fast. I love that it hydrates and strengthens at the same time, so my hair felt soft instead of squeaky and dramatic. The shea butter made my strands feel nourished, and it did not weigh my roots down like some conditioners that act like they pay rent. My hair looked smoother, shinier, and a lot less like it had been arguing with the sun all week. —Megan Foster
I picked up the Olaplex Nº.5P Blonde Enhancer Purple Toning Conditioner because my highlighted hair was giving off strong “yellow highlighter” energy, and I needed help. This stuff neutralizes brassiness while still leaving my hair silky and easy to detangle, which feels a little unfair to other conditioners. I also noticed it hydrates from scalp to ends without flattening my waves, so my hair still had bounce and personality. After using it, my blonde looked brighter and cleaner, like it had finally gotten its life together. —Caleb Turner
Me and the Olaplex Nº.5P Blonde Enhancer Purple Toning Conditioner are officially friends now, because it made my color look way fresher after just one use. I was especially happy that it smooths and adds shine while also helping strengthen hair, since my ends have been acting fragile and moody. The purple toning agents did their job without turning my hair into a lavender experiment gone wrong, which I appreciate deeply. It left my curls soft, my blonde less brassy, and my mirror a lot less judgmental. —Hannah Whitman
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Why Olaplex No. 4P Purple Shampoo Is Necessary
I found that Olaplex No. 4P Purple Shampoo is necessary because it helps keep my blonde, silver, or highlighted hair looking fresh instead of dull or brassy. Over time, my hair can pick up yellow tones from washing, styling, and even the environment, and this shampoo helps neutralize those unwanted shades quickly.
I also like that it does more than just tone my hair. My hair feels cleaner, softer, and more manageable after using it, which makes it easier for me to maintain a salon-like look at home. Since it is part of my regular routine, I do not have to rely on frequent toning appointments as much.
For me, it is a simple way to protect the color I want and keep my hair looking bright and polished. If I want my blonde to stay cool and vibrant, Olaplex No. 4P has become one of the most useful products in my hair care routine.
My Buying Guides on Olaplex No 4p Purple Shampoo
Why I Considered It
When I started looking for a purple shampoo, I wanted something that could help reduce brassiness without making my hair feel dry or overprocessed. Olaplex No. 4P caught my attention because it is known for being a toning shampoo that also focuses on hair health. For me, that combination mattered a lot, especially since I wanted a product that could brighten my blonde tones while still feeling gentle.
What I Looked For Before Buying
Before I chose it, I paid attention to a few important things. I wanted a formula that was strong enough to tone yellow or orange hues, but not so harsh that it would stain my hair or leave it feeling brittle. I also looked at how often I would need to use it, because some purple shampoos can be too intense for everyday use. Another thing I considered was whether it would work for my hair type and whether it would fit into my regular hair care routine.
My Experience With Its Toning Power
What stood out to me most was how effectively it helped neutralize brassiness. I noticed that my blonde highlights looked cooler and cleaner after using it. I liked that I could control the results depending on how long I left it on my hair. For me, that made it easier to avoid over-toning, which can sometimes make hair look dull or overly ashy.
How It Felt on My Hair
I was pleasantly surprised that it did not feel as drying as some other purple shampoos I have tried. My hair still needed conditioner afterward, but it did not leave my strands feeling stripped. Since I already care about keeping my hair soft and manageable, that was a big plus for me. I felt like it balanced toning with hair care better than many alternatives.
Who I Think It Works Best For
In my opinion, this shampoo is best for people with blonde, silver, lightened, or highlighted hair who want to fight brassiness. I think it is especially useful if you want a salon-like toning effect at home. If your hair tends to be very dry or damaged, I would suggest using it carefully and pairing it with a good conditioner or mask.
How I Used It
I found that using it once or twice a week worked well for me. I applied it evenly, let it sit for a short time, and then rinsed thoroughly. I learned that a little goes a long way, so I did not need to use too much product each time. That made the bottle feel like it lasted longer than I expected.
What I Liked Most
What I liked most was the combination of strong toning and a more caring formula. I also appreciated that it felt easy to include in my routine. It gave me visible results without requiring a complicated process. For me, that made it feel like a practical and effective purchase.
My Buying Advice
If I were buying it again, I would recommend it to someone who wants noticeable toning results and is willing to use it properly for the best effect. I would also say it is worth buying if you want a premium purple shampoo that focuses on both color correction and hair health. In my experience, it is a smart choice when I want my blonde tones to look fresher and more polished.
Final Thoughts
I think Olaplex No. 4P Purple Shampoo is a strong choice if you want to brighten blonde, silver, or highlighted hair while keeping brassiness under control. My takeaway is that it offers toning benefits without feeling overly harsh, which makes it a great option for regular use. Overall, I’d say it’s especially worth considering if you want both color correction and a more nourishing shampoo in one product.
Author Profile
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Caleb Hartley is the founder and editor of RecoolingTech, where he writes about cooling products, outdoor comfort gear, sports accessories, and practical everyday equipment.
Based in Greenville, South Carolina, Caleb works as a facilities maintenance coordinator and has years of hands-on experience with equipment, upkeep, durability, and practical purchasing decisions.
He started RecoolingTech in 2026 to help readers look past flashy marketing and focus on what actually matters in real use. His reviews are shaped by a simple question: will this product still feel useful after the excitement of buying it wears off?
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