For the most part, windows on planes have the ability to block UVB rays however, UVA rays, which can hit your skin at a deeper level, can still penetrate glass.

As a result, you are at higher risk of sun-induced damage and even skin cancer.

For pilots especially, wearing sunscreen is of paramount importance with a recent study in JAMA Dermatology revealing that just one hour at 30,000 feet could expose pilots to the same amount of UV radiation as a 20-minute tanning bed session would.

Read the full article at