Dark spots, freckles and moles are cosmetic defect formed most often as a result of prolonged exposure to sunlight. The skin cells - melanocytes, begin to produce a lot of dark dye that is unequally distributed to form pigmentation. They are formed mainly in places of sunburn, inflammation of the skin, especially after acne or as a result of the use of photosensitizing drugs, herbs and cosmetics.
In case of the skin of excessive or uneven pigmentation, when characteristic places with a darker color - pigment patches, mostly in bronze color occur.