Thicker moisturizer and a humidifier fix most of it.

Maintaining your skin through temperature swings is about layering protection and hydration, not about changing everything you do.

The problem is simple: cold air holds less moisture, so your skin loses water. Then you walk into a heated room (forced air, radiator, whatever) and that dry air saps even more. Your skin barrier gets wrecked. The fix is to add a heavier moisturizer at night—think creams with ceramides, shea butter, or squalane—and slap on a humidifier wherever you’re sleeping. Travel humidifiers are cheap and tiny. Use one.

Daytime: switch to a gentle cleanser (no foaming sulfates if you can help it) and apply moisturizer on damp skin. If you’re really dry, a few drops of facial oil before your moisturizer. Sunscreen still matters because snow reflects UV. Don’t skip it.

Don’t go crazy with actives during the trip. Tretinoin or strong acids + dry airplane air + hotel heating = peeling disaster. Pull back to basics until you’re home.

One travel hack: bring a small spray bottle of thermal water or plain toner to refresh your face mid-day. It’s not a moisturizer, but it helps between environments.

Future you won’t regret the extra five minutes.