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A Derm Says *This* Is Her Best-Kept Travel Skincare Secret

Dryness, redness, and irritation are the most widespread winter skin woes, but anyone who struggles with skin conditions like eczema, psoriasis, or rosacea, knows that they can worsen in the winter too. Why, you ask? It’s simple. The air is dry, and every single one of the aforementioned skin issues is either caused or aggravated by dry air. That explains why they can pop up in any season, especially when traveling and hopping from dry airplane cabins to air-conditioned hotel rooms and back again.

Experts recommend maintaining a 40-60% humidity level for hydrated skin and healthy sinuses. However, in the winter, you’ll often encounter far less than that. Oh, and here’s a not-so-fun fact: the humidity in airplane cabins can drop as low as 5%… Yep, that’s only a fraction of what’s considered healthy. So, what’s the fix?

(Image credit: Canopy x Dr. Idriss)

The answer is to use a humidifier. That’s according to Shereene Idriss, MD, board-certified dermatologist, founder of Idriss Dermatology in NYC, and founder of the science-backed skincare line, Dr. Idriss. “When the air moisture levels drop, your skin’s ability to retain hydration is compromised, leading to increased Trans-Epidermal Water Loss (TEWL). Essentially, moisture from your skin evaporates more rapidly into the dry air,” she says. “As a result, your skin becomes dehydrated, and this lack of hydration weakens the lipid barrier, making the skin more permeable to irritants, allergens, and other environmental stressors. The outcome is dry, flaky, and sensitive skin, which becomes prone to inflammation, redness, and discomfort. It’s a vicious cycle: without proper moisture retention, your skin struggles to protect itself, leaving you more vulnerable to irritation.”