Unverified90% confidenceDecision RuleTime unknown

日常上下学/短时户外选SPF30 PA+++足够；海边/高原/长时间暴晒选SPF50+ PA++++，PA等级决定UVA防护（防晒黑防光老化），SPF只管UVB（防晒伤）

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Unverified日常上下学、短时户外选SPF30 + PA+++即可；海边/高原/雪地/长时间暴晒选SPF50+ 且标注PA++++，兼顾UVB和UVA防护93% similar Unverified日常上下学、树荫下活动选SPF30/PA+++足够；海边、雪山、长时间户外暴晒选SPF50+/PA++++，SPF50+相比SPF30实际防护提升有限但配方更厚重89% similar

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