YOU Don’t NEED SUNSCREEN WHEN indoors.
"UVB rays do not penetrate glass but UVA rays do. In addition, fluorescent lighting (though minimal) emit ultraviolet rays as well. It’s best to develop the habit of applying (and re-applying) sunscreen on a daily basis, whatever your environmental circumstances."
YOU Can’t GET sunburnt on a CLOUDY DAY.
"Ultraviolet rays can easily pass through clouds. Rays reflect off concrete, sand, water, and snow—so one can even burn while in the shade. UV rays also penetrate car windows and every day clothing. Applying window tints in your car (in addition to using sunscreen) may provide further protection."