Travelling wrecks your skin — and most people don't know why. Cabin pressure, humidity changes, disrupted routines, and incompatible hotel products create the perfect storm for barrier breakdown, dehydration, and breakouts. The good news is that once you understand what's actually happening to your skin at 35,000 feet and beyond, protecting it becomes simple. Dr. Lena Hartwell shares the 5 essential things every traveller needs to know to keep their skin healthy, hydrated, and resilient — no matter where the journey takes them.