[KongchangAI]
Unverified80% confidenceFactTime unknown

防晒原理分两类:物理屏蔽(高密度织物+钛/锌涂层)和化学助剂(防晒剂整理)。物理屏蔽型耐水洗、防晒不衰减但偏厚;化学助剂型轻薄但洗涤30-50次后防晒力下降,认准'防紫外线整理耐洗涤次数'标注

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Long-term
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