How to prepare for Hautalterung Check

Preparing for a skin aging check (e.g., DNA-based) is straightforward: collect saliva without eating, drinking, or brushing teeth for 30 minutes prior. Follow the kit instructions. However, the evidence for such genetic tests is weak. Skin aging is dominated by UV exposure, diet, sleep, stress, and hormones – genes like MC1R or COL1A1 have only small effects. A test cannot reliably predict an individual 'skin aging rate'. A professional skin analysis (e.g., with a scanner) or blood biomarkers (vitamin C, E, selenium, collagen precursors) is more useful. If you still take a DNA test, treat results as rough guidance, not a diagnosis. Evidence: marketing/unclear. Sources: no validated studies for commercial skin aging DNA tests.