Unverified85% confidenceFactTime unknown
防晒衣的防晒力主要靠面料密度和涂层/助剂，选原纱型防晒（如凉感锦纶+氨纶）比后整理涂层型更耐水洗，涂层型洗涤50次后UPF可能衰减30%以上
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Unverified防晒效果依赖织物密度和后整理涂层，涂层型口罩水洗30次后UPF会明显衰减，选择原纱防晒(如冰氧吧/凉感纱)的产品耐洗性更持久93% similarUnverified涂层型防晒皮肤衣的UPF值会随洗涤次数下降，一般30次水洗后防晒力明显衰减，长期使用应选择标注'耐水洗'或原纱防晒工艺产品92% similarUnverified防晒头套的UPF会随洗涤和拉伸衰减，含物理防晒（二氧化钛处理）的耐久性优于化学涂层款，涂层款洗涤20-30次后防晒明显下降需更换92% similarUnverified面料的防晒能力主要来自织物密度和涂层：原纱型防晒（防晒剂织入纤维）耐水洗50次以上仍有效，涂层型防晒洗20次后UPF值会明显衰减，长期用选原纱型91% similarUnverified防晒效果会随洗涤和拉伸衰减：涂层型面罩水洗20-30次后UPF明显下降，追求耐用应选纤维本身致密（非涂层）的原纱型防晒面料91% similar
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