Unverified88% confidenceDecision RuleTime unknown

日常通勤上学选SPF30/PA+++足够，海边游泳戏水才需SPF50+并认准'broad spectrum'广谱防UVA+UVB标识

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Unverified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）82% similar 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81% similar UnverifiedSPF30适合日常海边休闲活动，若长时间高强度暴晒（如冲浪、户外马拉松），防护力可能不够，需考虑SPF50+产品79% similar

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