Pimples on forehead and eyebrows may be acne or folliculitis, and the causes vary from disease to disease. 1. Acne: Acne needs to be considered to be related to factors such as increased androgen secretion, improper diet, and Propionibacterium acnes infection. (1) Increased secretion of androgens can cause excessive secretion of sebaceous glands. For example, prolonged late nights and endocrine disorders may cause increased secretion of androgens, which may result in acne on the forehead and eyebrows. (2) Improper diet (like to eat spicy and other heavy food) can lead to abnormal body oil metabolism, resulting in sebaceous glands secrete sebum increased, resulting in forehead eyebrow acne. (3) Excessive keratinization of keratinocytes at the mouth of the hair follicle may cause the mouth of the hair follicle to become smaller, blocked, etc., thus preventing the elimination of sebum, resulting in the formation of pimples that are visible to the naked eye. (4) Propionibacterium acnes infection, which can lead to acne on the forehead and eyebrows due to the long-term reproduction and growth of the microorganism. 2. Folliculitis: Folliculitis can also cause forehead and eyebrow acne, which needs to be considered in relation to bacterial infection, fungal infection, physical and other factors. (1) Localized skin infections with bacteria, such as Staphylococcus epidermidis, Staphylococcus aureus, Escherichia coli, etc., especially common in Staphylococcus aureus. (2) Fungal infections can also cause episodes of folliculitis, such as Candida and Tinea versicolor. (3) Rubbing, plucking and scratching the local skin may also induce folliculitis and cause forehead eyebrow acne. There are many reasons for forehead and eyebrow acne, after the symptoms, it is recommended to go to the hospital in a timely manner to improve the examination, follow the doctor’s instructions to take standardized treatment, do not ignore the symptoms, take it lightly, so as not to lead to adverse consequences.