Studies examining light sources in our indoor environment suggest that indoor lights emit unexpected amount of UV light as measured by a spectral radiometer. This shows that cumulative exposure to indoor lighting may be of clinical significance. Fluorescent lighting has been shown to increase lifetime UV exposure by 3% based on the distance the lamp is from the skin. If the lamp is close – particularly desk lamps, bed lamps, and overhead lamps – the light and heat emitted can worsen skin conditions in photo sensitive individuals. Avoiding close contact with the light or wearing SPF indoors can help reduce this exposure.

Another surprising source of UV exposure is the car! The side and rear windows in cars provide no protection from UVA rays. It is really important to wear SPF daily whether in the home, office or car. Daily cumulative exposure can cause chronic skin damage and early signs of photoaging.

Other sources of indoor exposures include TV monitors, computers, tablets, and phones. Although we are not necessarily getting UV radiation form these devices they do emit blue light. The amount of time spent in front of these screens and their proximity can pose a problem as blue light can increase free radicals, which is the most common contributor to premature aging. These devices also emit heat, which can exacerbate rashes and other heat-sensitive skin conditions.