hi ! fordyce spots are not dangerous, nor infectitious, only thing if they are on the face like on lips , it gives an odd look, which troubles most of the pts. its just a skin disorders, esp who have more of greasy or oily skin. you can opt for natural home remedies like lemon, haldi, orange peel or aloe vera gel, applying directly on them, if they are not giving any good result, then you can go for homoeopathy treatment it helps in regulating your dermal glands and disappearance of the spots.