Evidence check: Skincare DNA in the context of Haut

Evidence for DNA-based skincare tests (e.g., collagen, antioxidant, aging genes) is weak. Most offered SNP analyses come from studies with small effect sizes or purely associative GWAS, lacking validated clinical recommendations. The provided context contains no specific studies on skin DNA markers. Direct-to-consumer tests for skin health are often marketing-driven and not supported by robust human trials. Additionally, no standardized reference ranges exist. Evidence-based skincare should rely on proven factors like sun protection, hydration, and diet, not genetic tests. Caveat: such tests may lead to unnecessary product purchases or anxiety.