Unverified85% confidenceDecision RuleTime unknown

选购时优先查看是否有GB/T 18830-2009（纺织品抗紫外线）检测报告，防晒口罩的UPF值需在原布料及浅色区域测试才可靠，深色布料天然UPF更高但透气差

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85%

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儿童防晒口罩category

Related Claims

UnverifiedUPF50+标准表示可阻隔约98%以上紫外线，为国际防晒纺织品最高等级，选夏季防晒头套应认准正式UPF认证标签而非笼统'防晒'宣传82% similar UnverifiedUPF50+为该品类防晒性能的上限认证等级，表示织物可阻隔98%以上紫外线，该指标与面料密度和颜色深浅直接相关，浅色款实际防晒效果可能弱于深色款82% similar Unverified不要用防晒衣的透光测试判断防晒力——把布对着灯看透光多就以为不防晒是误区，原纱型面料即使较透光仍可反射/吸收紫外线，应以UPF数值和检测报告为准81% similar

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