Jul 22, - This is why teeth whitening while tanning has become so popular. Carbamide peroxide is a chemical that is activated by the UV rays in the tanning bed. Using whitening strips or gels can take weeks to notice a difference. Tanning beds use UV light to change the pigment in your skin. the original 4 versions of the Discus Dental Zoom lamp, one of the most popular in-office whitening procedures, used UV light. Can teeth whitening strips damage your teeth?