How They Work

• Self-tanners contain an ingredient called dihydroxyacetone, or DHA. This colorless sugar reacts with amino acids in dead cells on the top layer of skin. The resulting "tan" typically lasts for three to four days, as skin cells naturally shed. Not to be confused with bronzers, self-tanners aren't makeup; the color won't wipe off on skin or clothing.
  
  

Benefits

• By far, the greatest benefit of sunless tanners is that they reduce sun exposure for people who seek the look of a suntan. Products have come a long way since they were first introduced. Some now include moisturizers, emollients, humectants, vitamins, herbal extracts, antioxidants, alpha-hydroxy acids and other ingredients. It's easy to find one that does double-duty for your skin-care regimen.
  
  

Minor Considerations

• While safe tanners are very safe for most people, as with any topical cream, some people may be sensitive or allergic to some of the ingredients. So it's a good idea to test a small patch of skin before applying a self-tanner too liberally.
  
  Also remember that most self-tanners do not protect against the sun's harmful rays. You still need to wear sunscreen and take other steps to protect your skin, such as wearing wide-brimmed hats and tightly woven clothing.
  
  

For Best Results

• Self-tanners are available in light, medium and dark tones. For the most natural look, choose one that complements your coloring and take steps to apply the product as evenly as possible. Always follow the manufacturer's directions. Exfoliating prior to application helps to remove the driest skin cells, which may discolor the most, and might make your sunless tan last a bit longer. Since you'll get a lot of the product on your hands while applying it, wash them thoroughly when you are done--or better yet, wear gloves--to avoid unnaturally tan palms or fingers.
  
  

A Word of Caution

• Self-tanners are generally safe; these are not the same as tanning accelerators, amplifiers or enhancers, which magnify the effects of traditional suntanning. Because they rely on exposure to ultraviolet rays, they still require sunbathing, which is damaging to skin. Also, the U.S. Food and Drug Administration considers them unapproved drugs. And tanning pills, which are not approved for use in the United States, can be especially dangerous.