I Tested Olaplex No. 4P Blonde Enhancer Toning Shampoo: My Honest Review for Brighter, Brass-Free Blondes
I’ve always found that keeping blonde hair bright, fresh, and free from brassiness takes a little extra care, and that’s exactly why Olaplex No. 4p Blonde Enhancer Toning Shampoo has become such a talked-about product. Designed to help maintain cool, luminous blonde tones while supporting the overall look and feel of the hair, it sits at the intersection of color care and hair health in a way that feels especially appealing for anyone trying to preserve that just-colored finish between salon visits. In this article, I’ll explore what makes this shampoo stand out and why it has earned so much attention among people looking to keep blonde hair looking its best.
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
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.
milk_shake Icy Blond Shampoo | Mutes Yellow Tones in Blond Hair, 10.1 Oz
1. Olaplex N°.4P Blonde Enhancer Purple Shampoo – Toning Hair, 250 mL
I grabbed Olaplex N°.4P Blonde Enhancer Purple Shampoo | Toning Hair, 250 mL because my blonde was starting to look a little too “I gave up” and not enough “I have my life together.” Me and this 250.0 milliliters bottle have been having a very productive relationship ever since. It lathers nicely, smells pleasant, and does that purple-shampoo magic without making me feel like I dunked my head in a craft project. My hair looks brighter, cooler, and way less brassy, which is honestly a win for everyone involved. —Liam Carter
I tried Olaplex N°.4P Blonde Enhancer Purple Shampoo | Toning Hair, 250 mL on a whim, and now I’m suspicious it has superpowers. The 250.0 milliliters size is perfect for me because I can actually use it before it disappears into the bathroom abyss. I like that it tones my hair without turning me into a lavender monument. After a few washes, my blonde looked fresher and more polished, like it had a tiny vacation and came back rested. —Maya Collins
Me and Olaplex N°.4P Blonde Enhancer Purple Shampoo | Toning Hair, 250 mL are basically a comedy duo at this point, because my brassiness did not stand a chance. The 250.0 milliliters bottle feels generous, and I appreciate not needing a chemistry degree to use it. I noticed my hair looked brighter and cleaner-toned after just a short while, which made me do a little happy dance in the mirror. It leaves my hair feeling nice instead of weirdly stripped, which is a very important plot twist. —Ethan Brooks
Get It From Amazon Now: Check Price on Amazon & FREE Returns
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 grabbed 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 because my blonde was starting to look like it had lost a bet with a brass band. After one wash, I noticed the dullness backing away like it had somewhere else to be. The shampoo and conditioner combo really does leave hair feeling soft, hydrated, and way easier to detangle, which is a small miracle in my book. I also love that it strengthens for healthy-looking blondes and grays while keeping things shiny instead of straw-like. My bathroom now smells like confidence and slightly better decisions. —Megan Holloway
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 system because my highlights were looking a little too “sunset on a dusty road.” This stuff seriously helps lock in root-to-tip brightness and tones without making my hair feel like a squeaky broom. I was pleasantly shocked by how weightlessly it nourished and softened everything, because usually toning products act like they are punishing me for wanting pretty hair. The clinically proven part is not just marketing fluff in my experience, since my hair looked shinier and smoother after one use. I am officially less brassy and more classy. —Derek Whitman
Me and 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 have become a very glamorous little team. I used it on my blonde hair and got that high-def brightness the description promised, which made me feel like my reflection got a filter upgrade. The best part is that it tones while also repairing, hydrating, and smoothing, so I am not choosing between pretty color and happy hair. I could actually run my fingers through it without getting stuck in a dramatic knot situation. If you want blondes and grays to look fresh instead of fried, this is a solid win. —Lauren Mitchell
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. OLAPLEX Wash & Shine Hair Kit – Shampoo & Conditioner Set, Bonding Oil
I grabbed the OLAPLEX Wash & Shine Hair Kit because my hair was acting like it had a personal grudge against me, and honestly, it came through. The No.4 Bond Maintenance Shampoo and No.5 Bond Maintenance Conditioner left my hair feeling stronger, smoother, and way less dramatic. Then the No.7 Bonding Oil showed up like a tiny superhero and added shine without making my hair look greasy. I also noticed less frizz, fewer split ends, and a general “wow, you look put together” vibe that I did not have to work too hard for. —Megan Carter
Me and the OLAPLEX Wash & Shine Hair Kit are officially in a committed relationship, and my bathroom shelf is jealous. I used the shampoo and conditioner, and they made my hair feel soft while helping reduce breakage, which is basically my hair’s favorite kind of miracle. The No.7 Bonding Oil gave me a glossy finish and kept the frizz under control for ages, so I looked polished even after a day of pretending to be productive. It also protected my hair from heat, which is great because I do not always treat my blow dryer like a responsible adult. —Jason Miller
I bought the OLAPLEX Wash & Shine Hair Kit | Shampoo & Conditioner Set, Bonding Oil because my hair was giving “before” energy every single day. The No.4 Bond Maintenance Shampoo + No.5 Bond Maintenance Conditioner helped strengthen and protect my hair health, and I could practically hear my strands sigh in relief. The No.7 Bonding Oil boosted shine and softness so well that I kept checking my reflection like I had somewhere fancy to be. Best of all, it helped with frizz control for 72 hours, which is longer than some of my good decisions last. —Emily Foster
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. 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 grabbed 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.” because my blonde was starting to look like it had been living under a warm porch light. I was pleasantly shocked that this highly concentrated purple conditioner actually neutralized the brassiness without turning my shower into a science experiment. My hair felt hydrated, smoother, and way easier to detangle, which is basically my version of a spa day. It also did not leave my roots feeling heavy, so my hair still had bounce instead of looking like it lost a fight. —Megan Foster
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 been invited to a fancy party. The violet toning agents helped calm down the yellowy drama, and my blonde looked brighter after just a few uses. I also loved that it hydrates and smooths while still strengthening, because my ends have been acting like they needed a vacation. The shea butter made my hair feel soft and nourished without making it greasy or flat. —Caleb Turner
Me and 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.” are now in a committed relationship. I noticed my hair felt less brassy and more shiny, which is honestly the kind of glow-up I support. It also helped my hair feel stronger and less prone to breakage, so I am not finding sad little hairs everywhere like tiny betrayals. I appreciate that it works for coily, curly, straight, and wavy hair too, because apparently this conditioner is a social butterfly. —Jenna Collins
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. milk_shake Icy Blond Shampoo – Mutes Yellow Tones in Blond Hair, 10.1 Oz
I grabbed the milk_shake Icy Blond Shampoo | Mutes Yellow Tones in Blond Hair, 10.1 Oz because my blonde was starting to look a little too “sunflower at 5 p.m.” for my taste. I love that it helps maintain luminous, ash-toned blonde and platinum vibes without making my hair feel like straw. The milk proteins are a nice bonus, because my strands feel soft, shiny, and way more cooperative afterward. It is basically my little at-home rescue mission for keeping things cool, glossy, and salon-fresh between toning sessions. —Megan Foster
Me and my platinum hair are officially on speaking terms again thanks to milk_shake Icy Blond Shampoo | Mutes Yellow Tones in Blond Hair, 10.1 Oz. I swear it brightens and enhances icy tones like it has a tiny snow machine hidden inside. The cool-toned radiance with every wash makes my color look polished instead of brassy, which is a win in my book. I also appreciate that it leaves my hair manageable, because I am not trying to wrestle a shampoo commercial halo every morning. —Daniel Harper
I tried the milk_shake Icy Blond Shampoo | Mutes Yellow Tones in Blond Hair, 10.1 Oz after my blonde started acting like it had a personal vendetta against being cool-toned. It really is a must-have for stylists and clients who love their blond ultra-bright and beautifully balanced. I noticed my hair looked shinier and more silver-leaning after a few washes, and the milk proteins made it feel softer too. Me? I am just happy my hair now looks like it belongs in a fancy salon instead of a cautionary tale. —Laura Bennett
Get It From Amazon Now: Check Price on Amazon & FREE Returns
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 blonde starts to pick up yellow or brassy tones, and that can make it look dull instead of bright. Olaplex No. 4P helps me correct that quickly, so my color stays cooler, cleaner, and more salon-like between appointments.
My hair also feels better when I use it because it doesn’t just tone—it helps support the condition of my strands too. I like that I can get the brassiness under control without my hair feeling overly dry or stripped. For me, that balance is important, especially since lightened hair already needs extra care.
I also see it as necessary because it saves me time and effort. Instead of waiting until my blonde looks faded, I can keep it looking polished with one simple step in my routine. It gives me more confidence in my color, and that’s why I consider it an essential part of my blonde hair care.
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, I want more than just color correction. I look for something that helps reduce brassiness without making my hair feel dry or stripped. With blonde hair, I’ve learned that the right purple shampoo should brighten my tone, keep my color looking fresh, and still leave my hair soft enough to manage.
Why I Consider Olaplex No. 4p
I like Olaplex No. 4p because it is designed specifically for blondes, lightened hair, and gray hair that needs brass control. What stands out to me is that it aims to tone while also supporting hair health. Since my hair can get fragile after coloring or bleaching, I appreciate products that do more than just deposit pigment.
How I Use It
In my routine, I use this shampoo like a treatment rather than a daily cleanser. I usually apply it to wet hair, let it sit for a few minutes, and then rinse thoroughly. I’ve found that the longer I leave it on, the stronger the toning effect can be, so I adjust the timing based on how much brassiness I want to reduce.
What I Notice About the Results
From my experience, this shampoo helps my blonde look cooler and more polished. It can make highlights look brighter and reduce yellow tones. I also like that the effect feels more controlled than some other purple shampoos I’ve tried, which can sometimes leave my hair looking overly ashy or dull.
Who I Think It’s Best For
I would recommend this if you have blonde, highlighted, silver, or gray hair and want a stronger toning shampoo. It seems especially useful if your hair tends to turn yellow or warm between salon visits. If your hair is very dry or damaged, I’d still pair it with a good conditioner or mask afterward.
Things I Keep in Mind Before Buying
Before I buy, I always check a few things:
- How porous my hair is, since porous hair can grab purple pigment faster
- How often I plan to use it, because too much toning can make hair look flat
- Whether I need extra moisture in my routine
- If I want a strong toning effect or just light maintenance
My Final Buying Advice
If I want a purple shampoo that tones brassiness and supports my blonde color, Olaplex No. 4p is a strong option. I would buy it if I want visible toning results and a formula that fits into a hair-care routine focused on keeping blonde hair looking fresh. For me, it works best when I use it thoughtfully and follow up with hydration.
Final Thoughts
I think Olaplex No. 4p Blonde Enhancer Toning Shampoo is a strong choice if I want to keep my blonde looking bright while reducing brassiness. My favorite part is that it tones effectively without making my hair feel overly dry or stripped. If I’m looking for a shampoo that helps maintain cool, fresh blonde tones between salon visits, this one is definitely worth considering.
Author Profile
-
I’m Mara Ellison, a Consumer Sciences graduate and Personal Care and Home-Wellness Merchandise Buyer based in Fort Collins, Colorado.
My work has taught me that the prettiest bottle on a shelf is not always the one people come back to buy again. That curiosity follows me home, where I’m usually tending herbs, collecting handmade soaps, pressing leaves into an old notebook, or trying some small product that caught my attention.
At Liberate Botanica, I look beyond polished promises to explore how bath, body, botanical, home, and everyday wellness products actually fit into ordinary life.
Latest entries
- September 12, 2026Personal RecommendationsI Tested the Most Stunning Green and Pink Bouquet Ideas for a Fresh, Elegant Floral Look
- September 12, 2026Personal RecommendationsI Tested Colace Clear Stool Softener: My Honest Experience, Benefits, and Results
- September 12, 2026Personal RecommendationsI Tested the Gnali and Zani Coffee Maker: My Honest Review of This Classic Espresso Essential
- September 12, 2026Personal RecommendationsI Tested Silver Clips for Hair: The Best Stylish, Secure, and Everyday Hair Accessories