What role does Selen play in Haut?

Selenium is an essential trace mineral that supports skin health primarily through antioxidant enzymes like glutathione peroxidases, which protect skin cells from oxidative damage. It also aids thyroid function, indirectly influencing skin turnover and hydration. Some observational studies suggest selenium may help reduce acne severity, improve psoriasis symptoms, and support wound healing. However, human evidence is moderate at best; most data come from mechanistic or animal studies. Selenium deficiency can impair skin integrity, but excess intake (e.g., from supplements) is toxic, causing hair loss and brittle nails. For most people, a balanced diet provides adequate selenium. DNA tests for selenium-related gene variants have limited clinical utility due to small effect sizes. Always consult a dermatologist before supplementing.