
Does hard water affect your skin? What the research says for travelers
Why your skin acts up in a new city: hard water, new weather, sun at altitude and the travel-breakout suspects

Skincare on a plane: why flying dries your skin and what helps
Why your face feels tight two hours after takeoff, a short long-haul routine and the window-seat sunscreen question

Carry-on skincare: liquid rules, sunscreen and a 4-item kit
Is moisturizer a liquid? Can sunscreen fly? The current rules, the half-empty bottle trap and a kit that mostly skips the bag