Unverified88% confidenceDecision RuleTime unknown
日常上下学/短时户外选SPF30 PA+++足够；长时间户外活动（海边、爬山、游泳）需SPF50+ PA++++，SPF30已阻挡约97%UVB，SPF50约98%，日常无需盲目追求超高倍数
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Unverified日常上下学、短时户外选SPF30/PA+++足够；海边、雪地、高原、长时间暴晒选SPF50/PA++++；SPF50以上的边际防护提升极小（SPF30挡97%，SPF50挡98%）不必盲目追高92% similarUnverified日常上下学、短时间户外选SPF30/PA+++足够；海边、高原、雪地或长时间暴晒选SPF50+/PA++++；SPF数值超过50后防护提升极小无需盲目追高90% similarUnverified日常上下学/短时户外选SPF30 PA+++足够；海边、高原、雪地、连续户外2小时以上选SPF50+ PA++++，防护并非越高越好，高倍数意味着更高成分负担89% similarUnverifiedSPF指数越高质地越油腻厚重、透气性越差，日常SPF30比SPF50更易涂抹均匀且实际防护差异有限（SPF30挡97%，SPF50挡98%）71% similarUnverified学生日常通勤选防水指数5000mm、透气10000g/m²/24h的入门级即可，无需追求专业户外的20000mm指标，否则透气差易闷汗59% similar
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