The sun is a powerful source of UV radiation, and it's important to protect yourself from its harmful effects. If you don't wear sunscreen, you run the risk of getting skin cancer or other types of skin damage.
But there are some situations in which wearing sunscreen at home isn't necessary. For example, if you're spending most of your time outdoors (such as on vacation), it may be enough to apply sunscreen only when you get back from your trip. Or if you want to save money by using a different type of product that doesn't contain SPF (for example, a spray-on lotion), then by all means go ahead!
But if you're planning on staying indoors for most of the day and aren't going outside much during those times -- say, if you're working from home -- then it's best to take extra care with your skin.
Sources of UV Rays
The sun is a powerful source of UV radiation, and even though you may think that you're protected by your clothing and sunscreen, there are still many sources of UV rays in your home. Here are some of the most common ones:
Window tinting. If you have window tinting on your car or home, you may be putting yourself at risk for skin cancer. In addition to protecting against natural sunlight, clear film also blocks out reflected sunlight from passing through windows.
Surrounding plants. Plants can also provide protection against UV rays by absorbing some of their energy before it reaches your skin. This means that if you have a plant near an outside door or window where sunlight enters your home, you'll be less likely to get burnt by UV rays than if there were no plants around that area at all.
Lightbulbs and lamps. Lightbulbs and lamps produce heat during use; this heat is converted into light through incandescence (heat). The light produced by these bulbs contains ultraviolet (UV) radiation as well as visible light.
Wear Sunscreen Indoors
Wearing sunscreen indoors is a common mistake. Some people think that since they're safe in their own home, they don't need to wear sunscreen. But this isn't true. Sunscreen can be applied to the skin without causing any problems, but it's important to do so correctly.
If you're wearing sunscreen indoors, make sure you apply it correctly:
Apply sunscreen early in the day so that it has time to absorb into your skin before spending time outside or in the water. This will help prevent sunburns and other sun damage caused by overexposure.
Apply enough of the lotion or cream to cover all exposed areas of your body (including hands and face). If you're using a spray-on formula, spray it directly onto your skin instead of rubbing it into hair or clothing (which can cause irritation).