Selenium is a powerful mineral that helps protect your skin against the effects of harmful UV rays. To boost your selenium, replace white rice and other refined grains with wholesome whole grains. This may also reduce inflammation, which contributes to skin damage. Excellent sources of selenium include brown rice, oatmeal, barley, whole wheat, Brazil nuts, beef, eggs, turkey, tuna, sardines and salmon. You may also want to consider a selenium supplement.
Source: Good Housekeeping