Surg Cosmet Dermatol. 2025;17(4):1-7
Skin laxity is defined as sagging and reduced tightness of the skin. A literature review was conducted using PubMed, Embase, and Cochrane databases to identify studies about skin laxity, focusing on causal mechanisms. Two main distinct processes of skin laxity have been previously reported, proposed here as superficial cutaneous laxity (SCL) and deep cutaneous laxity (DCL). SCL results from structural alterations in the dermis and leads to fine wrinkles and a superficial draped pattern. DCL is the result of subcutaneous sagging, mainly through relaxation and stretching of the complex formed by the adipose tissue, its septa, and the superficial fascia.
Keywords: Review; Skin; Skin Aging; Anatomy; Physiology
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