Do I need to wear sunscreen indoors?
Yes! While indoors at the office, at home, in a shop, or in a restaurant, you may think you are fully protected from the sun, but this is not the case! UVB rays, the primary sunburn ray, are largely blocked by glass; but more than 50% of UVA rays, the main cause of premature skin aging, can penetrate glass.
The side and rear windows of your car typically do not filter out UVA rays, nor do clouds or fog on rainy days. At the nail salon, most dry lamps emit UV radiation (predominantly UVA) – which is also why you should always wear SPF on your hands, one of the most common areas for premature signs of aging.