Unverified90% confidenceDecision RuleTime unknown
防晒有效性看UPF与遮光率双指标：UPF≥50+才算专业防晒（隔绝98%以上紫外线），同时遮光率需≥99.9%（黑胶或多层复合涂层），单看UPF高但遮光率低仍会透光晒黑
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90%
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Long-term
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