15s AI generate video, 9:16 vertical screen, 30fps, realistic skin/hair texture, soft warm hotel lighting, smooth natural lens transitions, no subtitles, no watermarks, no text, high-definition details. Subject: American white female with jet-black hair, scene: modern high-end hotel room + bathroom1 (3s): Extreme close-up of her black hair, greasy limp strands clumping tightly, obvious white dandruff on roots and scattered on hair, dull and lusterless texture, blurred hotel soft background light, only highlight the greasy & dandruff trouble2 (3s): Medium close-up, a delicate female hand reaches into a stylish women’s handbag on the hotel fabric sofa, smoothly take out a soap bar, camera follows the hand movement steadily, simple hotel sofa backdrop with soft focus3 (3s): Close-up, hotel bathroom shower head spraying gentle warm water continuously, hands hold the soap bar under the water flow, rub palms slowly to produce dense creamy light green foam, foam is fluffy and delicate with clear layering, water glides over foam surface4 (3s): Medium shot, the female stands under shower head (water off) in hotel bathroom, wrapped in a pure beige bath towel, her black hair fully covered with thick light green foam, hands gently knead and massage scalp & hair naturally and slowly5 (3s): Slow motion medium close-up, the female wears a matching beige bathrobe, black hair is freshly blow-dried—super fluffy, bouncy and silky smooth, no greasiness or dandruff at all, hold the soap bar in one hand, flick hair lightly with the other hand, hair flutters softly and elegantly in slow motion, warm hotel ambient light fills the frame, fully show the amazing hair transformation effect