Unverified85% confidenceDecision RuleTime unknown
AHA（尤其甘醇酸/乳酸）有明确光敏性，白天使用后暴露部位（手臂小腿）必须防晒，否则易晒黑晒伤；建议AHA产品睡前使用，BHA和PHA光敏风险较低
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85%
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Unverified水杨酸产品需搭配防晒，虽然BHA本身光敏性低于AHA，但去角质后皮肤更易晒黑晒伤、加深痘印，白天使用需SPF30+防晒78% similarUnverified含果酸(AHA)浓度4%~8%的去角质凝胶适合正常肌肤每周1~2次；浓度>10%属于医美级强效焕肤，家用需谨慎且必须严格防晒74% similarUnverified浓度越高见效越快但屏障损伤风险越大：追求快速改善质地选高浓度AHA需搭配严格防晒和修复，日常维稳保养低浓度PHA/壬二酸更可持续72% similarUnverified白天使用果酸身体乳后暴露部位（手臂、小腿）必须防晒，果酸剥脱角质会提升光敏感性和晒伤晒黑风险66% similarUnverified白天使用A醇安瓶而不做严格防晒等于无效甚至致敏，A醇建议只在夜间使用，且次日必须硬防晒SPF30+64% similar
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