If the chin is rough to the touch, if it is skin-colored and the surface is accompanied by flaking, consider the lack of lipid eczema that may be caused by dry skin, pay attention to avoid excessive washing, do not need to use alkaline detergents, you can topically use a mild non-irritating moisturizing cream. If it is more serious, you can also give butyl hydroxy acid cream, a small amount of topical application twice a day. If it is a red inflammatory rash, consider the possibility of folliculitis, you need to pay attention to avoid eating spicy and irritating food to avoid aggravation of folliculitis, do not pick and scratch, local can give Bactrim cream or fusidic acid cream anti-infection treatment. If there is a break, pay attention not to contact water, so as not to aggravate the infection.