15s AI generate video, 9:16 vertical screen, 30fps, hyper-realistic, natural hotel lighting, ultra-sharp details, seamless smooth transitions, no subtitles, no watermarks, core subject: American white female with jet black hair, scene: high-end hotel interior & bathroomLens1 (2.5s): Extreme close-up of her black hair, greasy clumpy strands, obvious white dandruff on roots, dull lusterless texture, blurred soft hotel ambient light in background, focus only on hair’s greasy and dandruff detailsLens2 (2.5s): Medium close-up, a slender female hand reaches into a chic women’s handbag on hotel fabric sofa, smoothly take out a triangular soap, camera follows hand movement naturally, simple hotel sofa backgroundLens3 (3s): Close-up, hotel bathroom shower head with gentle continuous water spray, hands hold the triangular soap, rub slowly to create dense fluffy light green foam, foam texture is clear and delicate, water flow brushes foam edgesLens4 (3s): Medium shot, the female stands under shower head (shower off) in hotel bathroom, wrapped in clean white bath towel, black hair fully covered with thick light green foam, hands gently scratch and massage hair naturallyLens5 (4s): Slow motion, medium close-up, the female wears soft white bathrobe, black hair is freshly washed and blow-dried—super fluffy, smooth and shiny with no dandruff/greasiness, hold triangular soap in one hand, flick hair lightly with the other, highlight silky and flowing hair texture, warm soft hotel ambient light