OUAI Hair Thickening Spray Review: Instant Volume for Fine, Flat Hair

July 17, 20261 min read

OUAI Hair Thickening Spray - Thickening & Volumizing Spray

OUAI Hair Thickening Spray Review: Instant Volume for Fine, Flat Hair

The OUAI Hair Thickening Spray is built for anyone dealing with flat, fine, or thinning hair who wants an easy way to fake more body. Sprayed on damp hair from roots to ends before blow-drying, it delivers instantly thicker, fuller looking strands with volume that holds up throughout the day. The formula is powered by amaranth peptide and amino acids, which work to protect and strengthen hair while it styles, so you get thickness without sacrificing hair health. It's a simple last step to add before heat styling, and it pairs well with a comb through for even distribution and maximum lift at the roots.

The 6 Fl Oz bottle typically runs around $30 at retailers like Sephora, though it's worth checking the live Amazon price, since it can vary with promotions.

View Product on Amazon →

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