How are Testosteron Test and Haut related?

A testosterone test (e.g., MyBody-X's Hormon & VitalCheck für Männer) measures total testosterone in blood, not free, bioactive testosterone. Testosterone affects skin: it stimulates sebum production and can promote acne, and it also influences hair growth (body hair). Low testosterone may contribute to dry, thin skin. However, a direct causal link between a single test result and skin issues is not established, as many factors (genetics, diet, stress) are involved. The test can provide a clue but cannot diagnose skin conditions. For skin concerns, consult a dermatologist. Evidence for the relationship between total testosterone and skin health is moderate (human studies).