According to "Braun-Falco's Dermatology," dark spots can occur on the feet due to improperly fitting shoes, poor circulation and overexposure to the sun. Dark spots caused by poorly fitting shoes and overexposure can be safely faded at home, according to "Handbook of Dermatology: A Practical Manual." Dark spots caused by poor circulation, however, can be a serious medical condition, and should be evaluated by your physician.
Rub a pumice stone over the dark spots on your feet after you exit the shower each day. The pumice stone will exfoliate the area, sloughing off dead skin cells and lightening the appearance of the dark spots.
Massage shea butter into the dark spots each morning. The shea butter will hydrate the skin, which will promote healthy circulation and diminish the dark spots.
Massage liquid vitamin E into the dark spots on your feet each evening prior to going to sleep. According to "Braun-Falco's Dermatology," the vitamin E will promote cell turnover, which will fade the dark spots on the feet. If you are unable to locate liquid vitamin E, puncture a vitamin E capsule and squeeze out its contents.