Sunspots are most commonly caused by direct exposure to ultraviolet, or UV light, according to MDHealth. Sunspots, also known as solar lentigines, develop after being in direct sunlight for long periods of time. While anyone is susceptible to sunspots, those people with lighter shades of skin are more likely to develop these marks quicker.
Other natural causes of sunspots include yeast formation, natural pigmentation, hypomelanosis, fungus development and pityriasis alba. When caused by sun exposure, sunspots may be the predecessors to skin cancer and should be prevented. While they are most likely to develop on a person's hands and face since prolonged sun exposure is most common on those areas, they can develop anywhere in any size or shape.
While prevention is easier than the cure, there are many ways to fade sunspots once they appear on your skin. A popular home remedy is applying aloe vera to your skin twice a day, as it helps the skin regrow damaged tissue. Tomato and lemon juice are other popular remedies as the enzymes in tomatoes and the citric acid in lemons have significant healing properties. Fresh garlic and buttermilk are also said to make skin look naturally light. These foods can also be included in your diet as vitamin E and antioxidants help repair skin.