Manufacturer | OUAI |
---|---|
Package dimensions | 14.2 x 5.8 x 5.7 centimetres |
Package Weight | 0.37 Kilograms |
Item dimensions L x W x H | 6.4 x 6.4 x 14 centimetres |
Item weight | 0.79 Pounds |
Brand | Ouai |
Format | Liquid |
Volume | 10 Fluid Ounces |
Scent | floral |
Special features | Scented, Vegan |
Item model number | 2534 |
Product Dimensions | 6.4 x 6.4 x 14 cm; 358.34 g |
ASIN | B084BY8DQP |
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OUAI Thick Shampoo - Moisturizing Shampoo with Keratin, Marshmallow Root, Shea Butter & Avocado Oil for Thick Hair - Strengthens & Hydrates Strands - Paraben, Phthalate, Sulfate Free Shampoo - 300ml
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Return this item for free
Free returns are available for the shipping address you chose. For a full refund with no deduction for return shipping, you can return the item for any reason in new and unused condition.
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
Purchase options and add-ons
- Rich, Moisturizing Shampoo - Been dreading this all week? This hair strengthening shampoo calms dry, thick hair while fighting frizz and smoothing every strand so you can look forward to wash day.
- Moisture So Rich You'll Need a Prenup - This keratin shampoo fights frizz and tames flyaways with the help of marshmallow root to detangle and prevent hair from coiling. Shea butter delivers deep hydration while avocado oil coats your hair to prevent breakage.
- OUAI Means Yes - In that casual Parisian way. OUAI is about being better IRL. It's about having honest conversations with our community. It's about letting go of unrealistic expectations and embracing your imperfections.
- Made For Effortless Routines - All OUAI hair care products including our thick hair shampoo and conditioner are carefully crafted to cut styling time and nourish your hair health. We put the good stuff in our anti-frizz hair products and leave the bad stuff out, without ever sacrificing quality.
- Live Life Your OUAI - OUAI offers luxury hair products like this sulfate-free shampoo at affordable prices that are user-friendly — no glam squad needed. Wet hair, lather up and rinse clean. Follow up with OUAI Thick Conditioner. Moisture all the OUAI up.
Top Brand
Ouai

90% positive ratings from 500+ customers

10K+ recent orders from this brand
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Important information
Safety Information:
Avoid contact with eyes.
Ingredients:
Aqua (Water, Eau), Sodium C14-16 Olefin Sulfonate, Cocamidopropyl Betaine, Sodium Methyl Cocoyl Taurate, Cocamide Mipa, Glycol Distearate, Parfum (Fragrance), Cetrimonium Chloride (Anti-Static Agent/Agent Antistatique), Panthenol, Hydrolyzed Keratin, Avena Sativa (Oat) Peptide, Butyrospermum Parkii (Shea) Butter, Althaea Officinalis Root Extract, Persea Gratissima (Avocado) Oil, Glycerin, Hydroxypropyl Guar Hydroxypropyltrimonium Chloride, Peg-150 Distearate, Sodium Lauroyl Glycinate, Amodimethicone, C11-15 Pareth-7, Laureth-9, Trideceth-12, Polyquaternium-7, Cocoglucosides Hydroxypropyltrimonium Chloride, Acrylates Copolymer, Sodium Chloride, Sodium Hydroxide, Tetrasodium Edta, Disodium Edta, Citric Acid, Peg-200 Hydrogenated Glyceryl Palmate, Peg-7 Glyceryl Cocoate,1,2-Hexanediol, Caprylyl Glycol, Benzoic Acid, Potassium Sorbate, Phenoxyethanol, Sodium Benzoate, Benzyl Alcohol, Benzyl Salicylate, Limonene, Hexyl Cinnamal, Ci 14700 (Red 4), Ci 15985 (Yellow 6)
Directions:
Thoroughly wet hair from roots to ends. Lather a quarter-size amount in your hands, then work into roots and anywhere hair touches the scalp. Rinse shampoo. Make sure to squeeze out excess moisture before pairing with Thick Conditioner.
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Product Description






COMPLETE YOUR SHOWER ROUTINE
![]() Body Cleanser | ![]() Body Cleanser | ![]() Body Cleanser | ![]() Body Cream | ![]() Body Cream | ![]() Body Cream | ![]() Scalp & Body Scrub | |
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Customer Reviews
|
4.5 out of 5 stars 1,860
|
4.5 out of 5 stars 1,860
|
4.5 out of 5 stars 1,860
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4.4 out of 5 stars 1,415
|
4.4 out of 5 stars 1,415
|
4.6 out of 5 stars 749
|
4.6 out of 5 stars 2,181
|
Price
| £24.75£24.75 | £26.00£26.00 | £24.00£24.00 | £32.00£32.00 | £34.00£34.00 | £34.00£34.00 | £36.00£36.00 |
Category
| Body | Body | Body | Body | Body | Body | Body |
Scent
| ST. BARTS | DEAN STREET | MELROSE PLACE | MELROSE PLACE | SHIBUYA | ST. BARTS | MELROSE PLACE |
Recommended Skin Type
| All Skin Types | All Skin Types | All Skin Types | All Skin Types | All Skin Types | All Skin Types | All Skin Types |
Cruelty-Free
| ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
Paraben & Sulfate Free
| ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ |
Product information
Technical Details
Additional Information
Date First Available | 20 Sept. 2022 |
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Customer Reviews |
4.3 out of 5 stars |
Best Sellers Rank |
|
Feedback

OUAI Thick Shampoo - Moisturizing Shampoo with Keratin, Marshmallow Root, Shea Butter & Avocado Oil for Thick Hair - Strengthens & Hydrates Strands - Paraben, Phthalate, Sulfate Free Shampoo - 300ml
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Product details
- Is discontinued by manufacturer : No
- Product Dimensions : 6.4 x 6.4 x 14 cm; 358.34 g
- Manufacturer : OUAI
- ASIN : B084BY8DQP
- Item model number : 2534
- Country of origin : USA
- Customer reviews:
Customer reviews
Customer Reviews, including Product Star Ratings, help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers find this shampoo excellent for fine hair, leaving it clean and soft, with one customer noting it strips away scalp dirt and oils. Moreover, the product makes hair feel thick. However, the smell receives mixed reactions, with some finding it nice while others say it's too strong. Additionally, customers consider the product overpriced.
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Customers find this shampoo fantastic and excellent for fine hair, with one customer noting that it goes a long way.
"Great for fine hair..." Read more
"...another day - which is helpful as this is a very expensive but amazing product." Read more
"...I am fortunate that i do have thick and the shampoo has been brilliant, not only on my hair but also my scalpe, which can tend to be very dry...." Read more
"Fab shampoo, has really thickened my hair." Read more
Customers find the shampoo makes their hair soft and clean, with one customer noting it effectively removes scalp dirt and oils.
"...This product - OUAI washes hair making it immediately soft. Paired with the conditioner and BOOM!..." Read more
"...It cleans my hair really well, but doesn't leave it feeling heavy or limp and the shampoo smells so good, even when my hair is drying." Read more
"...I have been using it for a couple of years now and my hair has never felt softer or cleaner. I love it along with the conditioner...." Read more
"Love this shampoo so much it has now replaced my old hair washing routine...." Read more
Customers report that the shampoo makes their hair feel thick and silky, with one mentioning it helps reduce frizz.
"Nice formulation which I find thickens my hair quite noticeably. Good quality packaging and a handy size for gym bags...." Read more
"Fab shampoo, has really thickened my hair." Read more
"...Feels silkier and looks thicker." Read more
"This shampoo definitely helps frizzy hair and calms it down. My hair is always fresh and super curly after using it...." Read more
Customers have mixed opinions about the shampoo's scent, with some finding it pleasant while others note that it is very strong.
"...Does seem my hair seem to not frizz much, smells nice but it is light which I prefer." Read more
"...Doesn't smell anything." Read more
"...You have amazing looking, feeling and smelling hair. The fragrance is divine...." Read more
"...well, but doesn't leave it feeling heavy or limp and the shampoo smells so good, even when my hair is drying." Read more
Customers find the shampoo to be overpriced.
"...wash days by at least another day - which is helpful as this is a very expensive but amazing product." Read more
"...Thought I would try a change and this came up. Look it's ridiculously expensive and I dont for a moment think it will restore hair once the..." Read more
"...I have to use it all because I cannot return a used one and it's super expensive. Doesn't smell anything." Read more
"Expensive but it's brought my dull hair to life again, would I buy again, yes just wish it wasn't as expensive" Read more
Reviews with images

Great shampoo
Top reviews from United Kingdom
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- Reviewed in the United Kingdom on 2 June 2025Style Name: Thick Hair Shampoo - Travel Size 89mlSize Name: 89 ml (Pack of 1)Verified PurchaseWow. Wow. Wow!
I have a lot of very thick, coarse hair and more often than not, my previous shampoos tend to mat the hair in the wash process and then detangle in the conditioner stage.
This product - OUAI washes hair making it immediately soft. Paired with the conditioner and BOOM! You have amazing looking, feeling and smelling hair. The fragrance is divine.
Another thing to note is that since using this product, my hair seems to not need to be washed as often and I can push back wash days by at least another day - which is helpful as this is a very expensive but amazing product.
- Reviewed in the United Kingdom on 18 June 2025Style Name: Thick Hair Shampoo - Full SizeSize Name: 300mlVerified PurchaseI usually read some reviews before buying products and then weigh up the average. For this shampoo, although expensive, I have found it really good. I am fortunate that i do have thick and the shampoo has been brilliant, not only on my hair but also my scalpe, which can tend to be very dry. It cleans my hair really well, but doesn't leave it feeling heavy or limp and the shampoo smells so good, even when my hair is drying.
- Reviewed in the United Kingdom on 13 April 2025Style Name: Medium Hair Shampoo - Travel Size 89mlSize Name: 89 ml (Pack of 1)Verified PurchaseNice formulation which I find thickens my hair quite noticeably. Good quality packaging and a handy size for gym bags. A bit pricey though, so one star off for that.
- Reviewed in the United Kingdom on 12 April 2024Style Name: Fine Hair Shampoo - Full SizeSize Name: 300 ml (Pack of 1)Verified PurchaseI have been using Champo for a year and it made little or no difference to thickening my hair. Thought I would try a change and this came up. Look it's ridiculously expensive and I dont for a moment think it will restore hair once the follicle damage has occurred but I LOVE IT! I think it smells expensive and the packaging is chic. You really dont need very much as it lathers like mad - probably means it's full of sulphates - but to me it means that it will last a long time. I have short hair so not overly concerned with drying effect - this may be what makes hair feel fuller. My hair feels weightless and definitely has more body. I'm enjoying it!!
- Reviewed in the United Kingdom on 22 May 2025Style Name: Fine Hair Shampoo - Full SizeSize Name: 300 ml (Pack of 1)Verified PurchaseThe only shampoo I will ever use! I have been using it for a couple of years now and my hair has never felt softer or cleaner. I love it along with the conditioner. Smells fantastic too!
- Reviewed in the United Kingdom on 6 December 2024Style Name: Fine Hair Shampoo - Full SizeSize Name: 300 ml (Pack of 1)Verified PurchaseBought these to go on holiday but they got stuck on customs so I couldn’t use them.
When they eventually arrived about 3/4 weeks later they are ok to wear in the house but not ot go out in .
- Reviewed in the United Kingdom on 6 April 2025Style Name: Thick Hair Shampoo - Full SizeSize Name: 300mlVerified PurchaseLove this shampoo so much it has now replaced my old hair washing routine.
Love the smell and leaves my hair fresh, bright and feeling amazing!
- Reviewed in the United Kingdom on 23 December 2024Style Name: Fine Hair Shampoo - Full SizeSize Name: 300 ml (Pack of 1)Verified PurchaseMade my hair dry and now it gets oily the next day. Now I have to use it all because I cannot return a used one and it's super expensive. Doesn't smell anything.
1.0 out of 5 starsMade my hair dry and now it gets oily the next day. Now I have to use it all because I cannot return a used one and it's super expensive. Doesn't smell anything.Makes my hair dry
Reviewed in the United Kingdom on 23 December 2024
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Top reviews from other countries
- MargitReviewed in Germany on 20 February 2025
5.0 out of 5 stars Sehr schön werden die Haare
Style Name: Thick Hair Shampoo - Full SizeSize Name: 300mlVerified PurchaseSuper shampoo
- GinitheTwinniMomReviewed in the United States on 1 April 2025
5.0 out of 5 stars Amazing Shampoo Option for Fine Hair!
Style Name: Fine Hair Shampoo - Refillable SizeSize Name: 946.00 ml (Pack of 1)Verified PurchaseI love how healthy and strong my hair feels while using OUAI! It leaves my hair soft, light, and refreshed without weighing it down. The scent is absolutely amazing—luxurious but not overpowering. Plus, I really appreciate that they offer refill options, which is both convenient and eco-friendly.
The only downside is the price—it’s definitely on the expensive side. However, given the quality and results, I think it’s worth it! If you're looking for a high-end shampoo that truly delivers, this one is a great choice.
- Amazon CustomerReviewed in Canada on 26 June 2025
5.0 out of 5 stars I Love it
Style Name: Fine Hair Shampoo - Full SizeSize Name: 300 ml (Pack of 1)Verified PurchaseThis product is amazing. Fresh smell, and extends the need to wash my hair. Nourishing and a quality product. Highly recommend giving it a try.
- STReviewed in the United Arab Emirates on 5 September 2024
4.0 out of 5 stars just okay
Style Name: Fine Hair Shampoo - Full SizeSize Name: 300 ml (Pack of 1)Verified Purchasei didnt see what the fuss is about . it was good okay did the job but i couldnt understand the price.
- Sharon CReviewed in Canada on 29 April 2025
5.0 out of 5 stars Shine, softness and body
Style Name: Medium Hair Shampoo - Full SizeSize Name: 300 ml (Pack of 1)Verified PurchaseThis shampoo is really great! It adds noticeable shine and softness to my hair...and my hair has body even on the first day! Love it! 💕