Studies on skin aging in women show a multifactorial process. Genetic variants in collagen (COL1A1, COL3A1), elastin (ELN), and antioxidant enzymes (SOD2, GPX1) have been associated with wrinkle formation and elasticity, but effect sizes are small. Hormonal changes, especially estrogen decline during menopause, accelerate skin aging. UV radiation is the strongest environmental factor. Consumer DNA tests claiming to predict skin aging often rely on underpowered GWAS or candidate gene studies with limited replication. Evidence grade: marketing/unclear. These tests may offer general lifestyle suggestions but cannot replace dermatological assessment. Caveat: no clinical validation for polygenic scores in skin aging. Sun protection, retinoids, and hormone therapy (under medical guidance) have stronger evidence.
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