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🚀 Elevate your fine hair game with volume that speaks louder than words!
OUAI Fine Hair Shampoo is a sulfate-free, color-safe volumizing shampoo infused with biotin, hydrolyzed keratin, and chia seed oil. Designed specifically for flat, thin hair, it strengthens strands, reduces breakage, and delivers lasting bounce with a lightweight feel. Perfect for both men and women, this 10 oz formula is cruelty-free and free from harsh chemicals, making it a clean, effective choice for fine hair that craves volume and shine.





















| ASIN | B084BW599K |
| Active Ingredients | Biotin, Chia Seed Oil, Hydrolyzed Keratin |
| Age Range (Description) | Adult |
| Age Range Description | Adult |
| Best Sellers Rank | #1,622 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #44 in Hair Shampoo |
| Brand | OUAI |
| Brand Name | OUAI |
| Customer Reviews | 4.5 out of 5 stars 4,306 Reviews |
| Hair Type | Fine |
| Item Dimensions | 2.5 x 2.5 x 5.5 inches |
| Item Form | Liquid |
| Item Weight | 0.79 Pounds |
| 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 |
Z**H
Does the job!
A couple of weeks ago, I tried Ouai leave-in conditioner, which I liked right away. So I decided to try the Fine Hair Shampoo. Afterwards, my hair was silky-smooth and shiny—much more so than with other shampoos I've tried. Not sure if it thickened up very much, but no biggie. I really like the shampoo, which has a pleasing, delicate scent and produces LOTS of suds. I got the travel size for the initial tryout but will buy the regular size next.
D**P
An excellent shampoo
I've just started using Ouai, so I can't comment about long-term use, but my initial reaction is certainly favorable. It smells great, but the scent isn't at all overwhelming during the shampoo or afterwards. The shampoo is expensive, but it takes only a small amount to create really luxurious suds. I haven't noticed that my hair feels thicker, but it is definitely softer and shinier, and frizziness has been tamed.
D**C
Strong, nice, scented thickening for thin flat hair shampoo - works.
It does what it indicates - thickens the strands. A bit drying, but my conditioning spray takes care of it. A very perfumey scent, on the strong side, and stays throughout the day. Clashes with my perfume, but has a unique nice smell on its own. I purchased the smallest size and I’m glad I did. Will use it for travel, and in between washes with my regular shampoo.
R**Y
Finally a shampoo that works with my thin oily hair!
I have struggled forever with my long thing oily hair. I have to wash it daily. I got fed up so I searched the internet, read up on the best products and why, and this shampoo was heavily recommended among those who have similar hair issues as me. I also am a crunchy mom and don’t like to use things with fragrance but the smell is so milk and not in your face at all. A little goes a long way and lathers soooo well! I am a go big or go home person and was not loving spending the money on a small bottle to try it first haha so I went with the value bag and I am so glad I did! Get the big bag! Save money. Have beautiful hair. I can wash it every 2-3 days now and I haven’t been able to do that before.
E**J
Best shampoo for flat hair
OUAI Fine Hair Shampoo is honestly a holy grail for my flat, limp hair. My hair usually gets greasy quickly and falls flat no matter what I use, but this shampoo makes such a noticeable difference. It cleans really well without stripping my hair, and after washing, my roots feel light, fresh, and actually have volume. My hair looks softer, fuller, and bouncier without feeling dry. For anyone with fine, lifeless hair, this is truly a game-changing shampoo.
B**A
Great shampoo for fine hair
This is great shampoo! I have baby-fine hair, and not a lot of it, and most other products are too heavy for my hair and leave it greasy-looking and limp on non-wash days. This shampoo is different - it gave my hair lift and shine and it still looked great on non-wash days. It's a little pricey, but we'll worth it. Highly recommend.
J**T
Best shampoo I've ever used!
Over the years I've used so many kinds of shampoo, including volumizing shampoos for fine hair. This is definitely the best. It lathers up so well; it's light; and the fragrance is delightful and not overpowering. Yes, it's a little pricey, but think of it as a special pampering and indulgence for yourself.
B**Y
Scent does not last
I like the way this shampoo makes my hair afterwards. I wish the smell lingered longer because I can’t smell it after I take a shower.
I**R
Gutes Shampoo für feines Haar
Hochwertig, trocknet nicht aus.
A**E
Fantastico per capelli fini e dermatite
Ho i capelli fini e da quando uso questo shampoo non riesco più a farne a meno! me li deterge senza seccarli o appesantirli. Lo adoro! Soffro di dermatite ma questo non mi dà noia.
C**N
Shampoo indicado para pelo fino.
La descripcion del fabricante da a entender que es un shampoo para pelo grueso. Es todo lo contrario, indicado para pelo fino y con poco volumen, realmente lo levanta, tal vez lo seque un poco asi es que si el pelo es fino con poco volumen y con tendencia grasa es el ideal.Estoy de acuerdo con otras reseñas que la fragancia no es de las mejores y muy intensa,esto deberis tenerse en cuenta ya que a menudo las alergias pueden ser producidas por los perfumes.
C**J
Improved my hair
This shampoo has worked wonders for my fine hair. It may seem expensive but I've found that a little goes a long way. I decant it into pump bottles so only use a measured amount each time. This makes it last ages and is much more economical. It leaves me with thicker looking hair that is really soft. I also use the ouai conditioner for fine hair.
A**G
Perfect for asian hair.
Cleans my fine asian hair very well. Smell is amazing and unique. Has made my hair very healthy as I have been using this with the detox and conditioner for a month.
Trustpilot
3 weeks ago
3 days ago