15s AI video, 9:16 vertical screen, 30fps, hyper-realistic, soft hotel natural light, ultra-fine hair/skin texture, seamless fast transitions, no subtitles, no watermarks, no text, muted color tone, core subject: American white female with jet-black hair, scene: modern minimalist hotel room & bathroom1 (3s): Extreme close-up of black hair, greasy flat strands sticking together in clumps, heavy white dandruff visible at roots, dull dry texture, blurred hotel background light, full focus on the bad hair condition2 (3s): Medium close-up, a slim female hand reaches into a chic women’s handbag on hotel fabric sofa, smoothly take out a soap bar, camera tracks hand movement naturally, soft focus on hotel sofa backdrop3 (3s): Close-up, hotel bathroom shower head with gentle continuous water spray, hands hold the soap bar under water, rub slowly to create rich dense light green foam, foam is fluffy and delicate, water flow brushes foam edges, foam texture is vivid4 (3s): Medium shot, the female stands under shower head (water off) in hotel bathroom, wrapped in white soft bath towel, black hair fully covered with thick light green foam, hands gently scratch and massage hair with slow natural movements5 (3s): Slow motion medium close-up, the female in white bathrobe, black hair freshly washed and blow-dried—super fluffy, lightweight, silky smooth and shiny, no greasiness or dandruff, hold the soap bar in one hand, flick hair lightly with the other, hair flutters elegantly in slow motion, warm soft hotel ambient light, highlight the perfect hair transformation effect