[KongchangAI]
Unverified85% confidenceDecision RuleTime unknown

物理防晒(高密织物+浅色)在反复水洗后防晒力衰减小,化学涂层防晒剂(如二氧化钛涂层)洗涤20-30次后UPF会显著下降,需要长期使用选物理防晒结构

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