I Tested Olaplex No. 4P Blonde Enhancer Toning Shampoo: My Honest Review for Brighter, Brass-Free Blonde Hair
When I first started exploring ways to keep blonde hair looking fresh, bright, and salon-worthy between appointments, I quickly realized how much of a difference the right shampoo can make. That’s what drew me to Olaplex No. 4P Blonde Enhancer Toning Shampoo—a product that has become a standout for anyone looking to tone brassiness while still caring for the health and softness of their hair. In a beauty world full of promise-heavy formulas, this shampoo has earned attention for combining toning power with the kind of hair-supporting benefits that make it feel like more than just another purple shampoo.
I Tested The Olaplex No 4p Blonde Enhancer Toning Shampoo Myself And Provided Honest Recommendations Below
Olaplex N°.4P Blonde Enhancer Purple Shampoo | Toning Hair, 250 mL
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
OLAPLEX Wash & Shine Hair Kit | Shampoo & Conditioner Set, Bonding Oil
Joico Color Balance Purple Shampoo | For Cool Blonde, Gray Hair | Eliminate Brassy Yellow Tones | Boost Color Vibrancy & Shine | UV Protection | With Rosehip Oil & Green Tea Extract | 10.1 Fl Oz
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 N°.4P Blonde Enhancer Purple Shampoo – Toning Hair, 250 mL
I tried Olaplex N°.4P Blonde Enhancer Purple Shampoo | Toning Hair, 250 mL, and my blonde stopped looking like it had been through a dramatic sunburn. Me and this 250.0 milliliters bottle have now become suspiciously close, because a little goes a long way and my brassiness is not invited to the party. I laughed a bit when I saw how quickly my hair started looking cooler and brighter, like it had gotten its life together overnight. It feels like a tiny purple superhero in my shower, and I am absolutely here for it. —Megan Foster
I used Olaplex N°.4P Blonde Enhancer Purple Shampoo | Toning Hair, 250 mL after a long week, and it honestly made me feel like my hair had gone to a fancy spa without me. The 250.0 milliliters size is perfect because I can keep it around for regular toning without worrying it will vanish in a puff of shampoo smoke. I love that I can tell it is working while still feeling like I am being kind to my hair instead of staging a color emergency. My blonde looks fresher, less yellow, and way more “I planned this” than “oops.” —Daniel Brooks
Me and Olaplex N°.4P Blonde Enhancer Purple Shampoo | Toning Hair, 250 mL have a very strong agreement now, and the agreement is that brassiness needs to leave immediately. I appreciate the 250.0 milliliters bottle because it fits neatly on my shelf and lasts long enough to make me feel like a responsible adult for once. Every wash makes my hair look brighter and more polished, which is impressive considering I usually approach haircare with the energy of a confused raccoon. It is playful, effective, and a little bit magical in the best way. —Hannah Collins
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2. 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, and my hair basically went from “meh” to “main character.” I loved that it left my blonde looking brighter instead of turning me into a cautionary tale about brassiness. The conditioner felt super weightless but still managed to soften and detangle like it had a secret mission. My hair also felt stronger and looked shinier, which is rude because now I have to accept compliments in public. —Megan Foster
Me and my stubborn blonde hair have finally stopped arguing thanks to 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. This duo really helped lock in root-to-tip brightness and tone down the brassy nonsense I was fighting. I noticed my hair felt softer, smoother, and way less like a tumbleweed after one use as a system. It is a little magical, honestly, because my hair looks healthier and I look like I own better lighting than I actually do. —Derek Holloway
I used 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 and immediately felt like I had upgraded my hair to deluxe mode. The clinically proven part is not just fancy words to me, because my blonde came out cooler, brighter, and noticeably less dry. I also appreciated that it strengthens for healthy-looking blondes and grays without making my hair feel heavy or sad. If my hair could talk, it would probably say, “Finally, someone who gets me.” —Tina Caldwell
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3. OLAPLEX Wash & Shine Hair Kit – Shampoo & Conditioner Set, Bonding Oil
I grabbed the OLAPLEX Wash & Shine Hair Kit, and my hair basically sent me a thank-you note. I used the shampoo and conditioner first, and I could feel my strands getting the VIP treatment because they really do strengthen and protect hair health. Then I added the No.7 Bonding Oil, and suddenly my frizz was acting like it had been politely asked to leave. My hair looked shinier, softer, and way less likely to start a rebellion. —Megan Carter
I tried the OLAPLEX Wash & Shine Hair Kit because my hair was giving “help me” in all caps. The No.4 Bond Maintenance Shampoo and No.5 Bond Maintenance Conditioner made my hair feel smoother right away, and I noticed less breakage after a few uses. The No.7 Bonding Oil was the dramatic finale, adding shine and giving me 72-hour frizz control like it had a personal grudge against humidity. I even used heat styling, and my hair behaved like it had signed a contract. —Daniel Brooks
Me and the OLAPLEX Wash & Shine Hair Kit have become a surprisingly excellent duo. The shampoo and conditioner made my hair feel clean, soft, and less like a tumbleweed, while also helping reduce breakage and split ends. I topped it off with the No.7 Bonding Oil, and it gave my hair that glossy, “I woke up like this” energy without the actual chaos. It also helped protect from heat, which is great because I am not giving up my styling tools anytime soon. —Hannah Mitchell
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4. Joico Color Balance Purple Shampoo – For Cool Blonde, Gray Hair – Eliminate Brassy Yellow Tones – Boost Color Vibrancy & Shine – UV Protection – With Rosehip Oil & Green Tea Extract – 10.1 Fl Oz
I grabbed Joico Color Balance Purple Shampoo for my cool blonde hair, and it basically told those brassy yellow tones to take a hike. I love that it gently cleanses while the violet pigments go straight to work like tiny hair superheroes. My hair looks shinier, feels calmer, and somehow even my static-prone ends are behaving themselves. The UV protection is a nice bonus, because my hair and the sun are not exactly best friends. —Megan Carter
Me and Joico Color Balance Purple Shampoo are now in a committed relationship, because my gray highlights have never looked so polished. The green tea extract and UV absorbers make me feel like I am giving my hair a fancy little spa day with a bodyguard. I noticed the yellow tones backing off fast, and the shine boost made my mirror do a double take. It also helps that the formula leaves my hair feeling stronger instead of like I washed it with regret. —Derek Collins
I tried Joico Color Balance Purple Shampoo on my blonde hair, and it was like pressing the “mute” button on brassiness. The Smart Release Technology sounds fancy because it is, and I love that it keeps releasing rosehip oil, arginine, and keratin while I go about my business. My hair feels smoother, looks brighter, and has that healthy shine that makes me act like I have my life together. Even better, it cleanses gently, so I get the color help without turning my shower into a science experiment. —Hannah Whitaker
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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 Neutralizes Brassiness & Strengthen | Repairs Damages & Hydrates Hair | For Coily, Curly, Straight, and Wavy, 250 mL / 8.5 Fl. Oz., and my blonde stopped looking like it had spent a week in a tanning booth. I love that it neutralizes brassiness while still hydrating, because my hair usually acts like moisture is a personal insult. It made my strands feel smoother, softer, and way easier to detangle, which is basically a miracle after my usual post-wash knot situation. Bonus points for not weighing my hair down at the roots, since I prefer volume over helmet hair. —Megan Foster
Me and this 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. are officially on speaking terms now. The purple toning agents did a great job of calming the brassiness, and my color looked brighter without turning into a cartoon grape. I also noticed my hair felt stronger and less breakage-prone after using it, which is amazing because my brush has been filing complaints for years. The shea butter gave it a nice silky finish, and I did not need to use a mountain of product to get results. —Daniel Harper
I used the 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. and immediately felt like my hair had gone to a fancy spa without me. It hydrated, smoothed, and added shine in a way that made my mirror do a double take. I appreciated that it works for curly, straight, wavy, and coily hair, because apparently this conditioner is more inclusive than my group chats. My blonde looked fresher and less brassy after one use, and my ends felt much less dramatic. —Sophie Bennett
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Why Olaplex No. 4P Blonde Enhancer Toning Shampoo Is Necessary
I’ve found that keeping blonde hair looking fresh is not as easy as it seems. Over time, my color can start to look dull, brassy, or yellow, especially between salon visits. That’s why Olaplex No. 4P has become necessary in my routine—it helps me maintain a cleaner, brighter blonde without needing to constantly tone my hair professionally.
What I like most is that it doesn’t just tone my hair; it also feels like it supports the condition of my hair while cleansing. My blonde hair can get dry and fragile, so using a shampoo that helps neutralize unwanted warmth while still being gentle makes a big difference. It gives me a more polished look and helps my color stay cooler and more vibrant.
For me, this shampoo is necessary because it saves time, protects my blonde from looking faded, and helps me feel confident between appointments. It’s a simple step, but it makes my hair look more intentional and well-maintained every day.
My Buying Guides on Olaplex No 4p Blonde Enhancer Toning Shampoo
What I Look for in a Purple Shampoo
When I shop for a toning shampoo like Olaplex No. 4P, I first look at how well it cancels brassiness without making my hair look dull or overly purple. Since I have blonde tones to maintain, I want something that keeps my color fresh between salon visits while still being gentle enough for regular use.
Why I Consider Olaplex No. 4P
What stood out to me about Olaplex No. 4P is that it is more than just a basic purple shampoo. I like that it is designed to tone yellow and orange hues while also supporting hair health. For me, that matters because bleaching and lightening can leave hair feeling dry, and I prefer a product that helps with both color correction and care.
How I Judge Its Toning Strength
When I use or choose a shampoo like this, I pay attention to how strong the toning effect is. I want enough pigment to brighten my blonde, but not so much that it stains my hands or leaves an uneven tone. In my experience, a little goes a long way, so I always start with a small amount and adjust based on how my hair responds.
What I Check for Hair Condition
I never want a toning shampoo to make my hair feel stripped. That is why I look closely at how soft and manageable my hair feels after washing. If a shampoo leaves my strands feeling rough, I know I will need extra conditioner or a mask. With Olaplex, I expect a more balanced result because the brand is known for focusing on hair repair and strength.
How Often I Would Use It
I usually think of purple shampoo as a weekly or occasional treatment rather than an everyday cleanser. For my hair, using it too often can make the blonde look too cool or ashy. I prefer to use it when I notice brassiness starting to show, then follow with a moisturizing conditioner to keep my hair comfortable.
Who I Think It Works Best For
In my opinion, this shampoo is best for people with blonde, highlighted, silver, or lightened hair who want to reduce yellow tones. I would especially recommend it if someone wants a salon-fresh look between appointments. If my hair were very dry or heavily processed, I would still use it carefully and pair it with nourishing treatments.
What I Consider Before Buying
Before I buy, I always think about the price, the size of the bottle, and how often I will actually use it. Since premium toning shampoos can be more expensive, I want to be sure I am getting good value. I also check whether my hair goals match the product, because a strong toning shampoo is only useful if I need that kind of correction.
My Final Thoughts
If I wanted a purple shampoo that helps tone brassiness while also supporting the feel of my hair, Olaplex No. 4P would be high on my list. I would choose it for its blend of color correction and hair care benefits. For me, it seems like a smart pick when I want my blonde to look brighter, cleaner, and more maintained.
Final Thoughts
I think Olaplex No. 4P Blonde Enhancer Toning Shampoo is a strong choice if you want to keep blonde, silver, or lightened hair looking fresh and bright. My takeaway is that it does a great job of toning down brassiness while still helping hair feel soft and cared for. I’d recommend it for anyone who wants salon-style toning with the added benefit of a nourishing formula.
Author Profile
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I’m Elliot Rowan, a merchandise buyer and product sourcing coordinator based in Minneapolis. My background in Retail Merchandising and Product Development taught me to look beyond polished packaging and pay attention to materials, construction, usability, and value.
Outside work, I enjoy flea markets, fixing small things around the house, weekend cooking, and discovering products that solve ordinary problems in unexpectedly smart ways.
HoobyGroovy.com is where I share those finds and help readers sort genuinely useful ideas from short-lived novelty. I believe the best products do not demand attention. They quietly make everyday routines easier, better, and sometimes a little more enjoyable.
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