片段 2｜经典组合为何失效
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:
“问题通常出在这套组合：卡波 + 黄原胶。这两种在高电解质环境下，一个怕盐，一个怕剪切，放在一起，稳定性直接打架。不是谁不好，是环境不对。” — while pointing to two labeled beakers (hand-drawn symbols only:
“C” for carbomer,
“X” for xanthan; ink smudged, no legible text) on a clean bench in a GMP lab.
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