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🚀 Elevate your fine hair game—volume and strength that won’t quit!
OUAI Fine Hair Shampoo is a biotin-enriched, sulfate-free formula designed to volumize and strengthen fine, thin hair. Featuring hydrolyzed keratin and chia seed oil, it delivers lasting bounce and shine without weighing hair down. Safe for color-treated and chemically processed hair, this clean beauty essential is your go-to for fuller, healthier-looking hair with a fresh Mercer Street scent.


























| ASIN | B084BW599K |
| Active Ingredients | Biotin, Chia Seed Oil, Hydrolyzed Keratin |
| Age Range (Description) | Adult |
| Age Range Description | Adult |
| Best Sellers Rank | #1,455 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #37 in Hair Shampoo |
| Brand | OUAI |
| Brand Name | OUAI |
| Customer Reviews | 4.5 out of 5 stars 4,020 Reviews |
| Hair Type | Fine |
| Item Dimensions | 2.5 x 2.5 x 5.5 inches |
| Item Form | Liquid |
| Item Weight | 12.64 ounces |
| Liquid Volume | 10 fluid ounces |
| Manufacturer | Ouai |
| Manufacturer Part Number | 2532 |
| Material Type Free | Gluten Free, Paraben Free, Phthalate Free, SLS Free, Sodium Laureth Sulfate Free |
| Model Number | 2532 |
| Number of Items | 1 |
| Other Special Features of the Product | Not Tested On Animals |
| Product Benefits | Volumizing |
| Recommended Uses For Product | Split Hair |
| Scent | Mercer Street |
| Scent Name | Mercer Street |
| Suitable Hair Color | All Hair Colors |
| UPC | 815402021269 |
| Unit Count | 10 Fluid Ounces |
J**N
Fuller bouncy hair!
I decided to give this a try after a friend recommended it to me. It smells so good and has a fresh scent. I have very fine hair and immediately noticed after using it more fullness and volume without any greasiness. My hair seemed more bouncy and shiny too,, Great deal on it on Amazon prime day and I wish I had bought more!
F**D
Soft hair with a lot of body
This shampoo is terrific. Perfect for fine hair. My hair feels soft, full of body and is easy to style. I can't use conditioners because they flatten my hair, but this product feels like i used my dream conditioner. Easy to comb through with no tangles. Shiny and bouncy. With most shampoos I have to wash my hair every day because it flattens out when I sleep, but I can go up to 3 days between shampoos and it always looks nice. This is a Wirecutter recommendation and they were so right.
D**L
Pricey, but a little goes a long way!
I read about this shampoo in NYT Wirecutter. But it is pricey! For Prime Day, it was on sale, so I thought I would try it. Pros: - the scent is lovely! I can still smell it hours later. This might bug some people. - it lathers up better than any other shampoo I have. - a little goes a long way! - my fine hair (of which I have a lot, even though it's chin-length) has more volume than I've noticed with any other product - the lid for the bottle is the kind where you push down on one side and the other pops up. I am only mentioning this, because the bottle itself has a seal on it. Which means it did not leak at all in transit! - I also have oily skin, and my hair looks glossy and shiny but not at all oily - My hair feels so soft! Cons: - Price. But I might continue to buy and use, because it's better than anything else I've tried!
L**K
Thickening thin fine hair.
It does what it says, it thickens the hair, leaves it soft and you do not need a while bunch.
M**A
My Hair Feels So Clean and Has More Body
I absolutely love this OUAI Fine Hair Shampoo. It leaves my hair feeling incredibly clean without stripping it, and it gives my fine hair noticeably more body and volume. A little goes a long way, and it lathers really well. My hair feels soft, looks healthier, and has more movement after every wash. It also smells amazing, which is a huge bonus. This has definitely become one of my favorite shampoos, and I’ll continue buying it.
L**E
Thickens like it claims....
Definitely thickens hair. Especially fine hair type. Smell is nice, not overly floral, but clean. A little goes a looooong way. Only real negative is it seems to make my hair straw-like, and dry. Conditioner doesnt seem to help, which is odd.
M**R
Great shampoo
I love this shampoo! It really adds volume to my hair and it smells so good. It's very concentrated so it only takes a small amount.
D**L
Maybe not the best shampoo depending on what you want
Pro: smells very nice; cleans and rinses well Con: I’ve used Aveda blue malva for years since my hair turned to a grey silver. Since my mid-70’s my hair has been thinning, not unexpectedly, so I’ve been trying a few different products, rosemary oil, but I lack the discipline to use it regularly enough to discover whether it increases hair growth. So I tried OUAI and it does seem to add texture but I don’t like the feel of my hair, feels rough and tangles easily. So thinking I might try every other or two along with Aveda, or maybe pass it on to a friend but I won’t buy it again
B**M
Despite what others say....
I 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!!
M**N
Great shampoo
Great shampoo, received many compliments about my hair after using it
S**I
Super
No lo cambio, tengo un año usándolo y es lo mejor para cabellos finos grasos
S**T
just okay
i didnt see what the fuss is about . it was good okay did the job but i couldnt understand the price.
G**D
Great daily shampoo
Leaves hair feeling clean and thicker
Trustpilot
3 weeks ago
3 days ago