Experts say the following about sunless tanners:
- All sunless tanners use DHA (dihydroxyacetone) to temporarily color skin. DHA is considered safe for skin. Sunless tanners do not protect from the sun's UV rays, so sunscreen should be used in tandem. Also, beware of SPF claims by sunless tanners. If the package doesn't list the ingredients of titanium dioxide, zinc oxide, Helioplex or avobenzone (or Mexoryl SX or Tinosorb outside the U.S.), then it doesn't protect against UVA rays, which are the most damaging to skin.
- All sunless tanners fade like a suntan and need to be reapplied every three to five days. Reviews advise showering and shaving before applying sunless tanners; doing so afterward will remove the colored skin cells, lightening your tan.
- Reviews say smooth skin provides the best base for an attractive tan. Exfoliate before applying sunless tanners, and only apply them to bare skin. Applying them over moisturizer or sunscreen can cause uneven coloring. Also, go easy on areas around joints, like elbows and knees, which often have rough skin and can attract darker color.
- All sunless tanners can stain clothing. Give the tanner ample time to dry before dressing, or use foam or spray formulas, which dry faster than lotion. Wash your hands after application to avoid dark palms. You can also wear gloves or use an applicator to keep hands clean -- just don't forget to apply tanner to the backs of your hands after removing the gloves.
- If you're pregnant or nursing, experts recommend checking with your physician before applying sunless tanners, especially salon sprays. According to the American Pregnancy Association, DHA is considered safe for pregnant women. However, editors also say, "The only concern is whether the active ingredient, dihydroxyacetone (DHA), is able to penetrate the skin. Studies do not confirm that it can, but some healthcare providers encourage women to wait until after the first trimester, just to play it safe."
If you decide you can't wait for a sunless tan to fade on its own, reviewers recommend using St. Tropez Tanning Essentials Self Tan Remover (*est. $17) to remove color. You can also use this to clean your hands after application.