The pus on the chin is considered a bacterial infection causing boils and folliculitis, this time pay attention to must not pick and squeeze, otherwise it may lead to the spread of infection, you can use local topical iodophor solution to clean, and then give fusidic acid cream or mupirocin cream anti-infection treatment. Avoid eating spicy and irritating foods, and bedding should be changed regularly and exposed to the sun. For recurrent cases, it is necessary to check for micronutrient deficiencies and zinc supplements can be given as appropriate. It is recommended to wash your face with warm water, and it is best to choose weak to neutral cleansing products, rather than using strong alkaline cleansing products to stimulate the skin.