片段 1｜问题真相：不是搅拌，是体系崩了
High-resolution talking-head video, fixed camera, upper body visible,
neutral professional laboratory lighting,
overall brightness high and even, no overexposure,
background lab bench and environment clearly visible with normal exposure,
male researcher @wuchangwen,
wearing white lab coat and white shirt,
clean, professional scientific appearance,
facial skin clean, smooth, hydrated, elastic,
skin looks healthy, well-conditioned, and naturally radiant,
fair skin tone with subtle rosy undertone,
no beard, no stubble, no beard shadow, clean-shaven,
no wrinkles, no dullness, no yellow or gray cast,
skin clarity high, texture natural and realistic,
high luminance with highlights preserved,
image sharp and clear,
no blur, no softness, no haze,
@wuchangwen looks directly into camera and speaks calmly and professionally:
“面膜液分层？不是搅拌问题，是增稠体系崩了。很多代工面膜刚打样看着没问题，一加精华粉、盐类、防腐体系，几天后就开始上清下沉。” — while standing beside a stainless steel lab bench in a formulation room, gently tilting a sealed opaque bottle showing slight separation (contents milky-white, non-transparent). Background shows overhead stirrers and ingredient bins (labels blurred).
Negative prompt:
overexposure, blown highlights, clipped whites,
beard, stubble, beard shadow,
beauty filter, over-smoothing, pore blur,
yellow skin, dull skin, dark skin,
cinematic lighting, film look, blur, soft focus