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,
@liuyan7 在旁皱眉指图表，画外音强调 @liuyan7 说：“烟酰安和A醇放在同一体系，如果pH没控好、释放不同步，就容易水解生成烟酸，刺激上来，功效还互相抵消。”
特写透明凝胶体系微观动画，烟酰胺与A醇分子在液体中运动，pH数值从6.0骤降至4.0，二者反应生成烟酸，释放刺激信号波纹，周围屏障脂质崩解。
不要出现汉字
Negative prompt:
overexposure, blown highlights, clipped whites,
beauty filter, makeup, lipstick, blush,
plastic skin, pore blur, over-smoothing,
cinematic lighting,
yellow skin, dull skin, gray skin,
blur, haze