保養品(如 A 醇、杏仁酸、維他命 C)對色素型痘印有明確效果,但對真正的凹陷型疤痕改善率不到 10%。相比之下,飛梭 CO2 雷射改善率可達 26-75%(PMID: 38733085)、皮下剝離(subcision)對滾動型疤痕改善率達 50-100%。保養品管色素,醫美管凹陷——這是最務實的分工。
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