Most moles are harmless, but some can have the potential to evolve into melanoma (a deadly skin cancer)1. Performing regular self-checks of your skin for unusual features like size, shape and color is a great way to detect signs of a malignant mole early. Moles can appear in your childhood or teens and range in color from the natural skin tone to pink, brown or black. They can be flat or raised from the surface of the skin and are sometimes called nevi (nee-vis).
Many people find a hair growing through a mole worrying, but it's completely normal. The presence of hair in a mole usually means there's an entrapped hair follicle underneath and healthy skin cells above it.
It's also not recommended to cut off a hairy mole yourself with a razor blade or scissors because it's likely to bleed profusely and increase the risk of developing a scar at the spot. Alternatively, you could try using a special mole removal cream, cauterizing (burning) the mole with a mole removal pen or applying a specific concentration of iodine to the mole several times a day for a few weeks (be careful as iodine can burn).
Your best bet is to make an appointment with your dermatologist if you have a mole that changes in appearance. They will be able to perform a procedure that involves injecting the area with local anesthetic and either shaving off the mole or cutting it out with a scalpel.