

💁♀️ Elevate your hair game—thicker, fuller, unstoppable.
OUAI Hair Thickening Spray instantly amplifies hair volume and thickness with advanced volume polymers and nourishing amaranth peptides. It protects strands from heat damage up to 450°F while repairing and strengthening hair for a natural, full-bodied look that lasts all day. Ideal for fine or thinning hair, this spray delivers salon-quality results with a lightweight, non-crunchy finish.





















| ASIN | B0C6RKD616 |
| ASIN | B0C6RKD616 |
| Best Sellers Rank | #14,280 in Beauty ( See Top 100 in Beauty ) #142 in Hair Sprays |
| Customer reviews | 4.2 4.2 out of 5 stars (324) |
| Date First Available | 24 June 2025 |
| Is Discontinued By Manufacturer | No |
| Manufacturer | OUAI |
| Manufacturer | OUAI |
| Manufacturer reference | FG-0586-A-00 |
| Manufacturer reference | FG-0586-A-00 |
| Product Dimensions | 5.44 x 5.44 x 13.79 cm; 222.26 g |
| Product Dimensions | 5.44 x 5.44 x 13.79 cm; 222.26 g |
J**E
Been using this for several weeks & genuinely notice a difference in my hair. Truthfully the only thickening hair product I’ve ever tried that I can say works for actual fine hair. & smells amazing so that’s great too
J**Y
I think this is the best hair thickener I’ve bought, I’ve got thinning hair tried many other products but like this for I do think my hair looks fuller and it lasts.
C**I
Excellent product, does what it says. As I’ve got older my hair definitely lost its volume. After using this I can notice certainly it feels thicker.
H**T
I am absolutely loving the OUAI Hair Thickening Spray! This product is super effective and has become an essential part of my hair routine. It genuinely transforms my fine hair, instantly delivering a thicker, fuller look that gives me that amazing "fresh from the salon" volume every single time I use it.
C**N
Lovely, smells gorgeous, feels really nice in my hair and gives it a bit of body.l have fine hair which goes flat quickly,this really helps.
Trustpilot
1 month ago
4 days ago