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Olaplex No. 4P Blonde Enhancer Purple Toning Shampoo, Repairs, Hydrates, & Brightens All Blonde, Lightened, & Grey Hair, 8.5 fl oz

Olaplex
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Brand Olaplex
Item Form Liquid
Hair Type All
Scent Unscented
Age Range (Description) All

Description

Highly concentrated purple shampoo cleanses, tones, and repairs while keeping hair hydrated from roots to ends.

Benefits

Formula creates a rich lather to neutralize brassiness and boost brightness after one use.

Suggested Use

Apply to wet hair. Lather fully and let process 1-3 minutes. Rinse.

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From the manufacturer

Unbreakable Blondes
Strengthens, Repairs, and Hydrates.
52% reduction in breakage, 53% reduction in brassiness, 89% smoother hair

How often should I use Olaplex No. 4P?

Use 2-3 times per week or as often as needed to neutralize unwanted brassiness.

What hair types should use Olaplex No. 4P?

All blonde, lightened, and grey hair.

How do I use Olaplex No. 4P?

Apply to wet hair. Lather fully and let process 1-3 minutes. Rinse. For more intense toning, leave on hair up to 5 minutes. Follow with No. 5 Bond Maintenance Conditioner for everyday moisture or No. 8 Bond Intense Moisture Mask for extra hydration.

Product details

  • Product Dimensions ‏ : ‎ 2 x 2 x 5 inches; 8.5 ounces
  • Item model number ‏ : ‎ 20142192
  • UPC ‏ : ‎ 850018802192
  • Manufacturer ‏ : ‎ AmazonUs/OLAPQ
  • ASIN ‏ : ‎ B09FYK7FKR
  • Country of Origin ‏ : ‎ United States Minor Outlying Islands
  • Customer Reviews:

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Customer reviews

4.6 out of 5 stars
4.6 out of 5
8,571 global ratings

Customers say

Customers like the shampoo for its ability to combat brassiness. They say it smells good and doesn't dry out their hair. They also appreciate the color of their hair, saying it makes their blonde nice and bright. Customers are satisfied with the health, and quality of the product. However, some customers have reported that the shampoo seems to dry out hair. Customers also are disappointed with the effect on hair and have different opinions on value.

AI-generated from the text of customer reviews

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ColorQualitySmellHealthBrassinessValueMoistureEffect on hair
163 customers mention "Color"118 positive45 negative

Customers like the color of the shampoo. They mention that it works quickly, makes their blonde nice and bright, and freshens the color. Some say it takes the brassiness out and leaves a beautiful color. Overall, customers say it really nourishes their hair and color.

"...It takes the brassiness out and leaves a beautiful color. I use it every third shampoo." Read more

"...The color is super rich—wear gloves my nails are stained, lol...." Read more

"...Keeps my visits to the salon a lot less. It really does brighten within use...." Read more

"...I started to towel-dry and FREAKED when I noticed that it was even more purple than what you see in the picture...." Read more

132 customers mention "Quality"95 positive37 negative

Customers like the quality of the shampoo. They mention it does what it's supposed to do, is the most effective, and strongest purple shampoo they've ever used. They also say it'll protect your hair from environmental and styling damage.

"...This stuff works great. Quick tip my hairstylist told me with any blonde and toner or toning shampoo: Don't use high heat on your hair...." Read more

"Works great! Definitely tones down any brassiness!" Read more

"...The cons are it really dries out my hair, and causes frizziness. My hairstylist had me switch shampoos recently bc it’s was causing my hair to break" Read more

"...The quality of this product is unmatched though, just a few weeks of using this on my hair and the brassiness is completely gone, and it doesn’t dry..." Read more

30 customers mention "Smell"22 positive8 negative

Customers like the smell of the shampoo. They say it works great, smells good, and doesn't dry out their hair.

"I like this shampoo it's a good size, smells good and easy to use bottle without leaking...." Read more

"...It also has a great smell which is an added bonus. Will definitely be buying this again in the bigger size!" Read more

"Got this for my blonde hair. Enjoy using it. Smells good. Doesn't dye my shower or body!Well worth the price." Read more

"Product worked well but makes my hair really dry and leaves an after smell." Read more

28 customers mention "Health"28 positive0 negative

Customers are satisfied with the health of their hair. They mention that the shampoo makes their hair feel super healthy, stronger, and shiny. Some say that it helps their hair after only one use and leaves it soft and manageable. It's a great detox for your hair that makes it brighter and takes the brassy color out. It also clarifies blonde hair and gets rid of the yellowing. It is a good boost for naturally silver hair and keeps hair from turning brassy.

"...This is a game changer. My hair is truly revitalized and wavy, like what? Where’d these waves come from?..." Read more

"Instructions are clear, really helps keep my bleached hair looking vibrate and healthy" Read more

"This product line is fabulous for your hair. It makes your hair stronger. It gives it a shine. It's great for older women like me. I love it!..." Read more

"...your hair is not dyed, this product is a game-changer in maintaining overall hair health and safeguarding against environmental and styling damage...." Read more

27 customers mention "Brassiness"27 positive0 negative

Customers are satisfied with the shampoo's ability to combat brassiness. They mention that it removes all the brassiness from their hair and leaves it at the perfect silver color. Some say that the shampoo is very purple, so it helps to curb brassiness and keep the brass tones out of hair.

"...It takes the brassiness out and leaves a beautiful color. I use it every third shampoo." Read more

"...though, just a few weeks of using this on my hair and the brassiness is completely gone, and it doesn’t dry out my ends either!..." Read more

"...And it helps with the brass definitely worth buying this product even if it is expensive." Read more

"...Amazing huh? All of my brassiness was removed and my lovely ashy toned blonde was back! I highly recommend this product...." Read more

37 customers mention "Value"25 positive12 negative

Customers are mixed about the value of the shampoo. Some mention it's worth the price tag, while others say it'd be a little pricey for the amount that you get.

"Love it so much worth the money" Read more

"Worth the price for sure. Only need a little bit of product and keep it on for like 3-5 minutes and wow...." Read more

"...So exactly what I was looking for!A tad expensive for the bottle, but a little bit really does go a long way so I bet this bottle will..." Read more

"...to buy Olaplex due to the good reviews and it absolutely was worth the price tag!..." Read more

63 customers mention "Moisture"17 positive46 negative

Customers are dissatisfied with the moisture of the shampoo. They mention that it seems to dry their hair and damage it. Some say that it is not a moisturizing shampoo and that their hair feels less moisturized than when they wash it with a regular shampoo.

"This shampoo works like a purple shampoo should but tends to dry out my hair. I would suggest doing a deep condition when using it." Read more

"...However, this is not a moisturizing shampoo. I have thick, curly hair so have to buy another shampoo that is geared towards my hair type...." Read more

"...Smalls good and feels hydrating too." Read more

"Product worked well but makes my hair really dry and leaves an after smell." Read more

32 customers mention "Effect on hair"0 positive32 negative

Customers are dissatisfied with the shampoo's effect on their hair. They mention that it makes their hair frizz up, and it contributes to hair loss. Some say that it strips their hair, making it feel and look like straw.

"...It really does brighten within use. I don’t like that it makes my hair a tad bit hard, but I do use a mask twice a week that helps aid that!" Read more

"...My hair remains brassy after shampooing twice this week." Read more

"...Apparently there were some issues with hair loss. I couldn't afford to take that kind of chance." Read more

"...I know how to use products/tools to smooth my hair. This made my hair frizz up more than any shampoo and conditioner I have ever used...." Read more

Loved it works 100 percent
5 out of 5 stars
Loved it works 100 percent
Im not usually a product reviewer , but I had to take this moment to talk about how wonderful my hair got after just once five minutes in and it transformed my color completely took all the yellowish out after I had done a keratin treatment on my valiage it got yellow! I recommend this product 100 percent!! As you can see first pictures are yellow then after product is nice silvery blonde
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Top reviews from the United States

Karla Weston
5.0 out of 5 stars Works great.
Reviewed in the United States on July 12, 2024
Verified Purchase
I have recently stripped all the color off my hair to allow it to go natural. It takes the brassiness out and leaves a beautiful color. I use it every third shampoo.
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Christine Stanton
5.0 out of 5 stars Ridiculously good product
Reviewed in the United States on June 25, 2024
Verified Purchase
I recently decided I was done coloring my hair and want to grow out my gray. I’m 43f who is 100% salt and pepper but have been dying my hair a light brown with highlights forever. I haven’t been to the salon for about 3 months. 1st picture you can see how dull, brassy and gross my color is. 1st I used bumble and bumble Sunday shampoo to get rid of build up, then the purple shampoo. The color is super rich—wear gloves my nails are stained, lol. I lathered and left it on for 5 minutes, rinsed, then used the purple conditioner and left on for 5 minutes. I followed with the olaplex deep conditioning treatment—left that on for 20 minutes then showered. This is a game changer. My hair is truly revitalized and wavy, like what? Where’d these waves come from? I would have definitely gone back to the salon for color if it wasn’t for this product, yes it’s expensive but a little goes a long way. For transparency, the only other change I’ve made is buy a hard water filter for my shower head—it was like $40 and super easy to install.
3 people found this helpful
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Bella Jean
5.0 out of 5 stars Great shampoo
Reviewed in the United States on June 19, 2024
Verified Purchase
I like this shampoo it's a good size, smells good and easy to use bottle without leaking. Leaves your hair soft but you should use a good moisturizer to prevent dryness.
One person found this helpful
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BetSo
5.0 out of 5 stars I won’t use anything else!
Reviewed in the United States on June 30, 2024
Verified Purchase
I love this product. Keeps my visits to the salon a lot less. It really does brighten within use. I don’t like that it makes my hair a tad bit hard, but I do use a mask twice a week that helps aid that!
3 people found this helpful
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C. Lundquist
4.0 out of 5 stars Works well
Reviewed in the United States on April 12, 2024
Verified Purchase
This shampoo works like a purple shampoo should but tends to dry out my hair. I would suggest doing a deep condition when using it.
3 people found this helpful
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Amazon Customer
5.0 out of 5 stars Light and Bright Results
Reviewed in the United States on June 26, 2024
Verified Purchase
Dang this purple shampoo is so good! Much stronger than other purple shampoos that I used to use. My hair became much lighter and brighter after just one use. Smalls good and feels hydrating too.
One person found this helpful
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Silver Fox
5.0 out of 5 stars Great once a week brightening shampoo
Reviewed in the United States on July 6, 2024
Verified Purchase
I’ve had white hair since age 20 and used other brightening shampoos, but this one seems to really time out the sun yellowing that occurs from being outside. You can’t use it more than twice a week on white hair because the hair will tint purple.
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Kristi
5.0 out of 5 stars Takes out the Brass
Reviewed in the United States on May 17, 2024
Verified Purchase
This stuff really works well for taking out the brassy tones. I've been underwhelmed by all previous purple shampoos I've tried and was convinced they just wouldn't work in my hair. This stuff works great. Quick tip my hairstylist told me with any blonde and toner or toning shampoo: Don't use high heat on your hair. The brass color will come back. She showed it to me in real time. So to make this stuff be effective and last, keep your irons under 390°. If you burn out the tone, it's not the shampoo's fault.

Here's how the size of the bottle compares to my boyfriend's boxers.
Customer image
Kristi
5.0 out of 5 stars Takes out the Brass
Reviewed in the United States on May 17, 2024
This stuff really works well for taking out the brassy tones. I've been underwhelmed by all previous purple shampoos I've tried and was convinced they just wouldn't work in my hair. This stuff works great. Quick tip my hairstylist told me with any blonde and toner or toning shampoo: Don't use high heat on your hair. The brass color will come back. She showed it to me in real time. So to make this stuff be effective and last, keep your irons under 390°. If you burn out the tone, it's not the shampoo's fault.

Here's how the size of the bottle compares to my boyfriend's boxers.
Images in this review
Customer image
Customer image
13 people found this helpful
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Top reviews from other countries

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Ana Palmeros
5.0 out of 5 stars Una maravilla!!
Reviewed in Mexico on March 18, 2024
Verified Purchase
Me encantó!!! Neutraliza el cabello naranja perfecto!!
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jade-leigh
5.0 out of 5 stars Love it !
Reviewed in the United Kingdom on May 11, 2024
Verified Purchase
After my hair being over processed at the hair dressers 7 weeks ago I finally caved in and decided to invest in a couple of the Olaplex products.
I was extremely sceptical after reading the reviews but with my hair snapping as badly as it was and me spending the last 7 weeks crying because of how thin, tangled and dry it was getting I was willing to loose the money should the products not work.
For the last 7 weeks I have been using bed head products and a coconut oil (these have always been my hair products and have never failed me!) but the damage caused to my hair was too much for these this time around!
I was literally waking up in a morning with a pillow full of small snapped hair, washing my hair was horrendous, I had crazy snapped hair sticking up on the top of my scalp! … well… I decided to buy just the Olaplex no 5 to start with, I used my resurrection bed head shampoo to remove the oils I’d used during the day and left the no 5 conditioner on my hair for around 30 mins, I instantly and on my life saw a change from there!
I was able to get a brush through my wet hair with out tangling, I allow my hair to dry naturally until slightly damp then I finish off with the hair dryer… prior I was covered in hair … after the one time use of the no 5 I honestly did not have one single hair on me … I can’t stress how happy that made me! 😩… any way! Back to the no 4p … I received this tonight, I instantly had the shower going, washed my hair as per with my bed head shampoo, applied the 4p to damp hair and left it on for 15 mins, after I applied the no 5 (just as a precaution really)… I left that for around 3 mins to do its magic, dried my hair as per (air dry until slightly damp then finished with the hair dryer) … again, no hair loss, no tangling, and a much nicer colour! I was absolutely gob smacked at the difference… I already have no fly always at the top of my head, my hair feels much stronger and although it’s not as thick as it use to be I’m absolutely certain that with continued use of these products it will be back to its healthy self in no time.
I have just gone on to order no 0, no 3 and no 7
My new hair routine will now be - no 0, no 3, no 4p, no 5 then no 7 and I will do this twice weekly ! I have full faith 🙏 (the above order is apparently really good for damaged, over processed blonde hair if any one is wondering)
With the no 4p - a little really does do a lot! I Literally used an amount that would equate to the size of a 50 pence piece … and yes, yes it does stain your hands, I thought I was clever by scrubbing straight after … that does not remove it 😂 … I’m going on a bit now so I’ll wrap it up, this stuff really is good … & I will neverrrrr stray from it with these results … (the first pic was from around a week ago… the second pic was straight after blow drying this evening- one use of no 4p - no filters) … this product - highly recommended!
Customer image
jade-leigh
5.0 out of 5 stars Love it !
Reviewed in the United Kingdom on May 11, 2024
After my hair being over processed at the hair dressers 7 weeks ago I finally caved in and decided to invest in a couple of the Olaplex products.
I was extremely sceptical after reading the reviews but with my hair snapping as badly as it was and me spending the last 7 weeks crying because of how thin, tangled and dry it was getting I was willing to loose the money should the products not work.
For the last 7 weeks I have been using bed head products and a coconut oil (these have always been my hair products and have never failed me!) but the damage caused to my hair was too much for these this time around!
I was literally waking up in a morning with a pillow full of small snapped hair, washing my hair was horrendous, I had crazy snapped hair sticking up on the top of my scalp! … well… I decided to buy just the Olaplex no 5 to start with, I used my resurrection bed head shampoo to remove the oils I’d used during the day and left the no 5 conditioner on my hair for around 30 mins, I instantly and on my life saw a change from there!
I was able to get a brush through my wet hair with out tangling, I allow my hair to dry naturally until slightly damp then I finish off with the hair dryer… prior I was covered in hair … after the one time use of the no 5 I honestly did not have one single hair on me … I can’t stress how happy that made me! 😩… any way! Back to the no 4p … I received this tonight, I instantly had the shower going, washed my hair as per with my bed head shampoo, applied the 4p to damp hair and left it on for 15 mins, after I applied the no 5 (just as a precaution really)… I left that for around 3 mins to do its magic, dried my hair as per (air dry until slightly damp then finished with the hair dryer) … again, no hair loss, no tangling, and a much nicer colour! I was absolutely gob smacked at the difference… I already have no fly always at the top of my head, my hair feels much stronger and although it’s not as thick as it use to be I’m absolutely certain that with continued use of these products it will be back to its healthy self in no time.
I have just gone on to order no 0, no 3 and no 7
My new hair routine will now be - no 0, no 3, no 4p, no 5 then no 7 and I will do this twice weekly ! I have full faith 🙏 (the above order is apparently really good for damaged, over processed blonde hair if any one is wondering)
With the no 4p - a little really does do a lot! I Literally used an amount that would equate to the size of a 50 pence piece … and yes, yes it does stain your hands, I thought I was clever by scrubbing straight after … that does not remove it 😂 … I’m going on a bit now so I’ll wrap it up, this stuff really is good … & I will neverrrrr stray from it with these results … (the first pic was from around a week ago… the second pic was straight after blow drying this evening- one use of no 4p - no filters) … this product - highly recommended!
Images in this review
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5 people found this helpful
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Awesome!!
5.0 out of 5 stars Awesome 👌
Reviewed in Australia on June 17, 2024
Verified Purchase
Love this brand. I have fine hair & this cleanses without drying or weighing down. Very happy 😊
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Angel Partida
5.0 out of 5 stars Buena compra
Reviewed in Mexico on March 31, 2024
Verified Purchase
Muy buen producto
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Wen-Marie Glew
5.0 out of 5 stars Olaplex purple shampoo
Reviewed in the United Kingdom on August 10, 2023
Verified Purchase
I have been lightening my hair over the last 4 years and recently (maybe due to the sun?) it looks yellow after about 4 washes. Maybe it’s the toner not being permanent I don’t know, not a stylist.
I’ve used Olaplex for years and love it so thought I’d finally give this shampoo a try.

Not only is it HIGHLY pigmented but it’s a thin/watery formula. A little goes a long way!
I washed my hair as usual then did a wash with this product and it completely stained my hands that it took 4 washes with a scrub to remove it. It was on my hair for no more that 90 seconds as it was my first use I wanted to see what the effects were before leaving on for the recommended time.
After rinsing, conditioner and then leave in conditioner I was shocked at how beautifully soft and manageable my hair was. It removed all the brassiness and left my hair feeling amazing. I will continue my regimen of only using this shampoo twice per month as I only put treatment’s in twice per month as I feel my hair isn’t dry or damaged (even with the lightening by my stylist) it even left me feeling like it doesn’t need hydration/moisture/repair treatments. I use function of beauty shampoo and conditioner once per week and alternate with Olaplex.
Whenever I do use this in the future I’ll definitely use no3 and no5 to maintain my length, colour and strength of my hair. Not only does it smell amazing but it’s a different scent to the rest of the Olaplex line and I love that.

Cannot recommend enough as it’s amazing. Buyer beware though use gloves so you don’t stain your hands and remove from skin around your hairline as soon as you can.
21 people found this helpful
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