Acne on the neck is a kind of acne, which is a chronic inflammation in the distribution area of hair follicles and sebaceous glands. Acne or folliculitis may be caused by staying up late or lack of sleep, or by the decline of immune function caused by overwork, or by endocrine dysfunction. Acne may occur because the area from the lower jaw to the upper neck is relatively prosperous for sebaceous glands. Long acne can be recuperated from work and rest, diet, skin care habits, endocrine, sunscreen and other aspects. Pay attention to living regularly and don't stay up late. Dietary restrictions on high-fat diet intake, including braised pork, whole milk, sugar, cake, etc. In terms of skin care habits, try to be as simple as possible. Do not use powdered skin care products, such as BB cream, and do not make up.