is darkened or tanned. It can be caused by exposure to UVA and UVB rays but it is not without side effects and is a potential carcinogenic. Some people darken their skin using sunless tanning (also known as self-tanners)and using products containing DHA but FDA has strictly warned against these products. Some people use make-up to create a tanned appearance. Another option is to tan using a tanning bed or sunlamp. Many sunless tanning products are available in the form of creams, gels, lotions, and sprays that are self-applied on the skin. Another option is the use of bronzers which are cosmetics that provide temporary effects. But anything should be used only under a medical supervision of your doctor.
I sincerely hope that helps. Take care and regards.