Unverified75% confidenceFactTime unknown
标注的UPF防晒指数会随水洗次数、面料拉伸和汗液浸透衰减，涂有涂层的防晒面料反复揉搓折叠后防护力下降，长期高频使用建议每1-2年更换
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75%
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Long-term
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Unverified防晒帽的UPF会随水洗和拉伸次数下降，紧绷型和高频清洗款的实际防晒寿命通常一到两个夏季，长期依赖需定期更换88% 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88% 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87% similarUnverified防晒面料的UPF值会随反复洗涤和拉伸下降，含氨纶弹力款经多次机洗后防护力衰减更明显，建议手洗、避免暴晒，出现明显透光即应更换87% similarUnverified防晒面料的UPF值会随反复水洗和拉伸下降，选可机洗且标注'耐水洗UPF50+'的款式，避免手洗需搓揉损伤涂层的产品，建议每季度评估更换86% similar
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