[KongchangAI]
Unverified90% confidenceDecision RuleTime unknown

过氧化氢(H2O2)浓度是美白核心,欧盟规定非专业用途上限为0.1%,而美国OTC产品常达6-10%(部分以过氧化脲形式)。海淘美版牙贴美白力强但敏感风险显著更高,牙齿敏感者应选H2O2≤3%或过氧化脲≤10%的配方

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