Usually, when people think about sunscreen, it's sunny beaches, outdoor sports, or pool days that come to mind. Very few would associate the need for sunscreen with being on an airplane. However, flying at 35,000 feet exposes your skin to unique risks, making wearing SPF on airplanes a smart and essential habit.
In this article, we’ll explore why skin protection is critical during flights, the science behind UV exposure at high altitudes, and practical tips to safeguard your skin while traveling.
Why SPF Matters on Airplanes
1. Increased UV Exposure at High Altitudes
Commercial airplanes typically cruise at altitudes of 30,000 to 40,000 feet. At this height, the atmosphere is thinner, and there is less UV protection. According to the World Health Organization (WHO), UV levels increase by approximately 15% for every 3,280 feet of altitude. This means that at typical cruising altitudes, UV radiation can be nearly double what you’d experience at ground level, yikes!
Airplane windows, while designed to block most UVB rays, don't protect against UVA rays too well. These ultraviolet rays penetrate deeper into the skin and contribute to aging, hyperpigmentation, and skin cancer. Pilots, flight attendants, and frequent flyers are particularly vulnerable.
2. The Link Between Flying and Skin Cancer Risk
Studies have highlighted the elevated skin cancer risk associated with frequent flying. A 2015 study published in JAMA Dermatology found that pilots and cabin crew members have twice the rate of melanoma— the deadliest form of skin cancer—compared to the general population. The study further revealed that spending just 56 minutes in the cockpit at cruising altitude is equivalent to the same UV radiation as a 20-minute tanning bed session. While passengers don’t spend as much time in direct sunlight as pilots, regular flyers are still exposed to high levels of UVA radiation through airplane windows.
Common Misconceptions About Sun Protection on Flights
"Windows Block Harmful UV Rays"
While airplane windows block UVB rays (the kind responsible for sunburn), they allow up to 50% of UVA rays to pass through. UVA rays can damage collagen, accelerate aging, and increase the risk of skin cancer. Sitting by the window can significantly increase your exposure, but even passengers in aisle seats are not immune, as UV rays can reflect within the cabin.
"Short Flights Don’t Matter"
Even short flights expose you to elevated UV levels. Cumulative exposure adds up over time, especially for frequent flyers. Whether you’re flying for one hour or ten, your skin is still at risk.
"I Don’t Need Sunscreen at Night"
While nighttime flights don’t pose the same UV risks, travelers on transcontinental flights that cross time zones often experience prolonged periods of daylight. Additionally, flights that occur during sunrise or sunset can expose passengers to intense UV radiation, as the sun’s rays are less filtered by the atmosphere during these times.
Practical Tips for Protecting Your Skin In-Flight
1. Apply a Broad-Spectrum SPF
Before boarding, apply a broad-spectrum sunscreen with SPF 30 or higher to protect against both UVA and UVB rays. Look for water-resistant formulas that won’t rub off easily, especially if you’re flying long-haul.
2. Reapply During the Flight
Sunscreen effectiveness decreases over time, so reapplying is key. For flights longer than two hours, consider reapplying SPF, especially if you’re seated by a window. Use a lightweight, non-greasy sunscreen mist for easy touch-ups.
3. Close the Window Shade
The simplest way to reduce UV exposure is to close the shade, especially during midday flights or while flying over areas with intense sunlight, such as deserts or tropical regions. If you’re not seated by the window, politely ask the person next to you to lower the shade.
4. Wear Protective Clothing
Consider wearing clothing with built-in UV protection, such as long-sleeve shirts or scarves, especially if you’re on a long flight. Accessories like wide-brimmed hats or sunglasses with UV-blocking lenses can also help protect your face and eyes.
5. Hydrate Your Skin
Airplane cabins are notoriously dry, with humidity levels often below 20%. This can dehydrate your skin, making it more susceptible to damage. Use a hydrating SPF or moisturizer alongside your SPF to keep your skin barrier healthy.
Dr. Doris Day, a New York-based dermatologist, explains, “Airplane windows are thinner than car windows and provide less protection against UVA rays. Even if you don’t feel the heat of the sun, the rays are still penetrating your skin and causing damage.”
Wearing SPF on airplanes is not just a precaution; it's essential. The combination of high-altitude UV exposure, thin cabin windows, and prolonged daylight hours makes flying a unique risk factor for skin damage. By taking simple steps like applying sunscreen, closing the window shade, and wearing protective clothing, you can safeguard your skin during every flight.
Whether you’re a frequent flyer or an occasional traveler, remember that your skin is your largest organ and deserves consistent care. So, next time you pack your carry-on, don’t forget to include your ultimate travel companion, sunscreen.
