It can be all too easy to go wrong with self tan application and the most difficult places to keep an even colour are wrinkly and dry areas like the knees, elbows and back of the heels. If you frequently see these areas going darker than the rest of you then make sure they are well moisturised before you tan. If that doesn’t help, take a dry washcloth after you have tanned and gently buff it over trouble spots. The cloth will pick up the excess colour. Easy!