OUAI Scalp Serum - 2 fl oz
$54.00
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Guests are saying
This scalp serum has garnered positive feedback for its ability to improve hair growth, hydrate the scalp, and provide a refreshing sensation. Many guests appreciate its pleasant scent and lightweight formula, which does not leave hair greasy. While some have experienced significant results in hair thickness and reduced shedding, others are still waiting to see long-term benefits. Overall, it is a promising addition to any hair care routine, especially for those dealing with thinning hair or dry scalp.
Summary created by AI from text of reviews reflecting recent feedback provided across different star ratings (includes incentivized reviews)
4.3 out of 5 stars with 940 reviews
71% would recommend
7 recommendations
5 out of 5 stars
3 September, 2026
originally posted on OUAI
Helped my thinning hair areas
This serum has noticeably improved my hair growth in thinning areas on the side and top of my scalp. I’m 58 and use it every night on these three areas and even my Aveda stylist has noticed an improvement since March!
5 out of 5 stars
8 June, 2026
originally posted on OUAI
The Best Scalp Serum
this product is a product that I buy on repeat ! it fits my routine perfectly and my scalp is always refreshed with that amazing cooling effect, which I love so so so much ! I cannot recommend this product enough !
5 out of 5 stars
16 March, 2026
originally posted on OUAI
Scalp feels great and I don’t shed as much
This serum feels wonderful on the scalp, is easy to work through and smells great. It does seem to help invigorate the scalp and lead to less shedding for me post-partum. I really like the product!
5 out of 5 stars
Thumbs up graphic, would recommend
24 December, 2025Verified purchase
(no review title)
This has helped my hair grow back so well - I have some dry patches on my scalp where the hair became sparse. After 5 months of use, I have significant hair growth and I continue to see baby hairs. Scent is great and formula is not greasy.
5 out of 5 stars
5 June, 2025
originally posted on OUAI
OUAI scalp serum
I absolutely loved it thank you so much for replacing my broken one!
5 out of 5 stars
3 June, 2025
originally posted on OUAI
♥️
My hair feels thicker! Think it’s working. Gonna give another bottle a try. It does give body to my hair too! Smells good! Goes on and dries with no greasiness!
5 out of 5 stars
30 May, 2025
originally posted on OUAI
Scalp Serum
Love this product! My scalp feels hydrated and my hair feels thicker. A little goes a long way!
5 out of 5 stars
23 May, 2025
originally posted on OUAI
BEST Serum
I actually notice a difference with this serum compared to many others I’ve tried
5 out of 5 stars
21 May, 2025
originally posted on OUAI
I have always suffered with
I have always suffered with a really bad dry scalp and this is the only product that has really worked for me!’
3 out of 5 stars
18 May, 2025
originally posted on OUAI
I love the way it
I love the way it smells but other than that I haven’t noticed any changes but I haven’t been using it that long.
5 out of 5 stars
8 May, 2025
originally posted on OUAI
reduced dry scalp/balding spot
The hair serum did exactly what I was hoping it would do. I developed a large dry scalp right at the top of my head. It resulted in a prominent hair free area. I was worried it was actual balding but I tried the hair serum and now the scalp feels better and hair is coming back. I can’t express how happy I am with this product!
5 out of 5 stars
27 April, 2025
originally posted on OUAI
Scalp serum
Love it- I use as directed and love the way it has helped my hair
5 out of 5 stars
25 April, 2025
originally posted on OUAI
Awesome scalp treatment!!
My scalp was needing some love and care and trying the scalp serum was a game changer!! I love how it feels and even the smell!!! I recommend it 💯!!!
5 out of 5 stars
17 April, 2025
originally posted on OUAI
Top Knotch
These drops are top knotch in my book! The first product that actually does what it says it does!
5 out of 5 stars
9 April, 2025
originally posted on OUAI
Not oily at all. Using
Not oily at all. Using this to help my thinning hair in the front. I’ve noticed growth so I bought another bottle!
5 out of 5 stars
2 April, 2025
originally posted on OUAI
Scalp Serum review
Smells amazing and is light weight. Application is super easy and i love the tube. It doesn’t do much for volume for me though.
5 out of 5 stars
27 March, 2025
originally posted on OUAI
So far so good
This an amazing product after just one use. I could stand to use more next time but I could really see a difference in how hydrated my scalp has been and there has been far less fallout. I’m going to continue to use this for sure!!
5 out of 5 stars
26 March, 2025
originally posted on OUAI
LOVE
This product is fantastic! My scalp has been getting dry with winter and is switching water sources (well water) so I needed a scalp serum. Went with this one and I’m so glad I did! My scalp isn’t itchy and flaky anymore, plus it smells heavenly. 100% recommend.
5 out of 5 stars
16 March, 2025
originally posted on OUAI
So far loving this. Haven’t
So far loving this. Haven’t used long enough for benefit but does not leave my fine hair oily even when used twice a day.
4 out of 5 stars
14 March, 2025
originally posted on OUAI
I like it so far but haven’t had it long enough
I have only had this scalp serum for 2 weeks. I have been using it daily for the most part, but I think it’s too early to see results. What I do like about the product is that it’s not thick and oily like most serums. It’s great because I can put it on in the morning before going out and you can’t even tell. It doesn’t make my hair greasy at all like others did. I’m hoping this product helps with my postpartum hair loss!