High-resolution scientific talking-head video,
fixed camera, locked framing, upper body visible,
no camera movement,
professional laboratory lighting optimized for short-video platforms,
global brightness intentionally elevated,
facial skin exposure locked as absolute priority,
no overexposure, no clipped whites,
highlights preserved on face and lab surfaces,
full laboratory environment visible and clear,
background brightness capped below facial exposure,
no blown highlights anywhere in frame,
female researcher @liuyan7,
wearing white lab coat and white shirt,
clean, professional, scientific appearance,
facial skin in ideal healthy condition,
skin smooth, elastic, hydrated, refined,
fine lines visually softened by lighting,
no emphasized wrinkles,
complexion corrected to remove yellow or gray cast,
fair skin with healthy pink undertone,
white-and-pink clarity, translucent and bright,
skin looks clean, even, and youthful,
natural skin only, no makeup, no lipstick, no blush,
skin quality achieved by lighting and exposure only,
no beauty filter, no artificial smoothing,
image sharp, high micro-contrast,
facial details clear even after platform compression,
no blur, no haze,
In the lower-left quadrant (25% of frame), synchronized scientific inset shows authentic lab data:
[0–4s] C. acnes fluorescence assay: control plate bright green at 24h; CG-treated plate dim (real agar imaging).
[4–8s] Cross-polarized sequence: sebum-mimicking film — untreated increases gloss; CG-treated remains matte.
[8–12s] Dual readout: impedance ~8000 Ω·cm² stable; pH meter reads “5.8”.
[12–14s] Vial labels fade in: “CG 0.5–1%”, “Zn 1%”, “B5 2%” (symbols/digits only).
@liuyan7 looks directly into camera and speaks provided script only: “我们的工程做法是换思路：不用水杨酸，改用辛酰甘氨酸0.5–1%，按工程配比走控菌+调脂路线；体系pH稳定在5.5–6.0，同时复配锌盐和泛醇，同步降油、退红、稳屏障，让痘程温和可控，刺激可控。”
Negative prompt:
(same as above: no makeup, no Chinese, no 3D, no blur, no cinematic effects)