Unverified85% confidenceDecision RuleTime unknown
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
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UnverifiedAHA（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74% similarUnverified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72% similarPartially Verified使用期间必须每日涂抹防晒，甘醇酸会增加皮肤光敏性，不做防晒会导致色沉加重，反而适得其反70% similarUnverified系统性美白方案：日间抗氧化精华（VC/阿魏酸）+严格防晒（SPF50）→晚间烟酰胺/377精华→每周2-3次美白面膜集中提亮，面膜仅是辅助环节而非核心68% 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67% similar
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