A handheld, selfie-style video in a bathroom with natural daylight. The young woman in a striped t-shirt holds up a brown glass serum bottle with dropper close to the camera, making sure the label is visible. She looks directly into the lens, casual and sincere. Lines (natural, short): “This is the serum I’ve been using lately… honestly, it’s the only thing keeping my skin this clear.” She lowers the bottle, unscrews the black dropper cap with a faint click, then shows a couple of drops in the pipette. She tilts her head slightly, applies two drops to her cheek, and pats it in with fingertips. She leans back toward the camera with a small smile and adds: “Lightweight, no stickiness… literally melts in.” Audio: her natural voice, light room tone, no background music (or optional soft lo-fi if desired). Camera: handheld with natural micro-shake, close framing on face and product. Mood: authentic, simple, quick tip — feels like she’s texting advice to a friend, not doing a polished ad. Length: 8–10 seconds.