Ouai Hair Thickening Spray 6 oz
- Heat protection up to 450F (232C)
- 6 fl oz spray, Cape Town scent
- Amaranth peptide and amino acids
- Paraben, phthalate and SLS free, cruelty free
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A thickening spray for flat or thinning hair that adds fullness and heat protection before blow drying. It is a styling aid, so it will not change actual hair density.
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ASIN: B0C6RKD616Category: Hair Sprays
Overview
Misting this OUAI spray on damp hair before blow drying boosts the look of thickness from roots to ends. Volume polymers add lasting lift without crunch, and it protects against heat.
Fuller-looking hair plus heat protection in one blow-dry step suits flat strands. The thickness is cosmetic, coming from polymers that coat each hair.
Who it's for
Blow-dry routines on flat or fine hair suit this spray. People hoping to treat hair loss need a scalp product, not a styler.
Pros and cons
- Adds visible thickness
- Heat protection built in
- Lift without stiffness
- Amaranth peptide strengthens
- Cosmetic thickness only
- Scent cannot be skipped
Performance notes
Volume polymers coat each strand and swell its diameter slightly, which reads as thicker hair. Heat from the dryer sets that film, while peptides and amino acids support strength.
Specifications
| Brand | Ouai |
|---|---|
| Dimensions & fit | |
| Item Weight | 0.49 pounds |
| Capacity & performance | |
| Item Volume | 6 fl oz |
| Liquid Volume | 6 fl oz |
| Construction & materials | |
| Material Type Free | Cruelty Free, Gluten Free, Paraben Free, Phthalate Free, Sodium Lauryl Sulfate Free |
| Included components | |
| Unit Count | 6 fl oz |
| Other details | |
| Hair Type | Coily, Curly |
| Item Form | Liquid |
| Scent Name | Cape Town |
| Number Of Items | 1 |
| Product Benefits | Thickening |
Frequently asked questions
Can I use OUAI Thickening Spray with a flat iron?
The listing states heat protection up to 450F (232C) and directs use before blow-drying.
How do I apply OUAI Thickening Spray?
Mist evenly on damp hair from roots to ends, then blow-dry and style.
Does OUAI Thickening Spray regrow hair?
No. It boosts the appearance of thickness and fullness.
What does it smell like?
The scent is listed as Cape Town.