Is there a combined effect from sunlight and tanning booth?
Without a doubt. By being in sunlight and frequenting tanning booths, you are exposing your skin to two damaging agents. There is every reason to believe that the additional exposure from UVA tanning units augments the damaging effects of the sun. Some exposure to sunlight is inevitable since it is not practical for people to stay indoors all the time. Recreation is an important part of our activities and contributes to good health. To reduce harmful effects of sunlight, you should be careful about how much time you spend outdoors, and use sunscreens to protect your skin. Exposure to artificial sources of UVA radiation provides no known beneficial effects. Dermatologists have serious concerns about consumers exposing their skin to artificial sources of UVA radiation and recommend against it. A tanning booth does your skin no good and may cause considerable damage. In short, you may be paying money to harm your skin.