Moles can develop at any time in your life, and although some contain no hair, some do. Hair growing from a mole is not dangerous, and mainly tends to be more of a cosmetic nuisance than a health problem. The most important thing to do is to have the mole checked if you notice its changing in size, shape, or colour, but the hair itself causes no problems.
Hair in Moles
Moles that appear on areas of the skin that contain hair follicles such as the arms, legs, scalp, genitals, and eyebrows, may have hair that grow out of the mole itself. The growth of hair is due to the location of the mole.
Moles with hair can appear on any part of the body, and in a range of colours, although most are dark brown or black.
Moles with hair in them can appear as round black heaped up moles with one or more hairs growing from them, or flat moles with hair growing from them.
Are They Dangerous?
Hair growing from moles is actually a good sign. It indicates that the mole may not be cancerous, because malignant moles do not grow hair. This is due to the cancerous cells destroying the hair follicles.
Moles that are present at birth called giant hair nevi or congenital nevi, may increase your chance of developing malignant melanoma.This risk is not applicable to adults who's mole grows hair later in adulthood.