Dermatologists Say: It Depends But Your Skin Is More Exposed Than You Think
When you board an airplane, sunscreen is probably the last thing on your mind. After all, you’re indoors, seated comfortably, and thousands of feet above the ground. No beach. No pool. No obvious sun exposure.
But here’s the surprising truth: your skin can be exposed to higher levels of UV radiation while flying than while walking on the street especially if you’re sitting near a window.
We asked dermatologists and looked at the science. Here’s what they say.
Why Flying Changes Sun Exposure
Commercial airplanes cruise at altitudes of 30,000–40,000 feet, far above the atmospheric layers that normally filter harmful ultraviolet radiation.
At this altitude:
- UV radiation increases by approximately 10–12% for every 1,000 meters of elevation
- Airplane windows block most UVB rays, but UVA rays can still penetrate glass
- UVA rays are the primary contributors to skin aging, collagen breakdown, pigmentation, and DNA damage
In short: you may not feel the sun but your skin still does.
UVA Rays: The Silent Skin Agers
Unlike UVB rays, which cause sunburn, UVA rays penetrate deeper into the skin, damaging fibroblasts and accelerating visible aging.
Scientific studies show that:
- UVA radiation penetrates standard glass, including aircraft windows
- Prolonged exposure contributes to wrinkles, loss of firmness, hyperpigmentation, and oxidative stress
- Cumulative exposure matters even in small, repeated doses
One famous case study of a commercial airline pilot revealed significantly more photoaging on the side of the face exposed to the airplane window, underscoring the long-term impact of in-flight UVA exposure.
So… Do Dermatologists Recommend Sunscreen on Flights?
Yes, especially if you:
- Sit near a window
- Take long-haul or frequent flights
- Fly during daytime hours
- Are concerned about premature aging or pigmentation
Dermatologists generally recommend broad-spectrum protection, focusing on UVA defense, not just sunburn prevention.
Even a lightweight SPF moisturizer can help reduce cumulative damage over time.
The Role of Antioxidants at High Altitude
UV exposure at altitude also increases oxidative stress, which accelerates cellular aging.
That’s why dermatologists often recommend pairing sunscreen with antioxidants, particularly Vitamin C, which:
- Neutralizes free radicals
- Supports collagen synthesis
- Brightens skin tone
- Enhances the effectiveness of sunscreen
This combination becomes especially relevant when flying, where UV exposure + dry cabin air can stress the skin barrier.
A Simple In-Flight Skin Strategy
Rather than layering heavy products before a flight, many dermatologists suggest a multifunctional daytime lotion that offers:
- UVA/UVB protection
- Antioxidant support
- Lightweight hydration
This is where formulations like Aeternum Z21 Day Lotion naturally fit into a travel-friendly routine. With SPF 15, 30% Vitamin C, and 5% DMAE, it supports skin firmness, brightness, and daily UV defense without feeling heavy or greasy.
It’s not about overdoing skincare on a plane it’s about consistent, science-backed protection, even when sun exposure isn’t obvious.
The Bottom Line!
You don’t need to treat every flight like a beach day but your skin doesn’t get a break just because you’re in the air.
✔ UVA rays still penetrate airplane windows
✔ High altitude increases UV intensity
✔ Repeated exposure contributes to visible aging
✔ Antioxidants + SPF offer smarter daily protection
For frequent travelers or anyone focused on long-term skin health, wearing sunscreen on a plane isn’t overkill it’s preventative care.