What causes acne on the forehead in girls

The forehead shows acne, which is due to the influence of androgen levels, sebaceous glands secrete more oil, too much oil will block the hair follicle mouth, resulting in abnormal hair follicle keratosis, combined with microbial infections, such as acne corynebacterium and bacterial infection, so it will show inflammatory acne. It shows red papules pustules, nodules, and even cysts. In the treatment, first of all to control oil, can light diet, prevent high sugar and high fat and spicy food, at the same time can be combined with the drug smeared vitamin A yogurt cream, benzoyl peroxide gel. External drugs are mainly for mild acne, for severe acne, to cooperate with oral medicine for treatment.