Vertical 9:16 TikTok-style video, realistic lighting.
A woman with a buzz cut (very thin hair) stands in front of a mirror.
Leave clear empty space on the right side for product image overlay (hair growth spray bottle).
She sprays hair growth spray ONCE onto her scalp.
Instantly, her hair bursts up, becomes visibly thicker and fuller, volume increasing dramatically in 1 second.
Shocked facial expression, eyes widen, she touches her hair in disbelief.
Clean background, high realism, viral TikTok ad style, strong before-and-after contrast.