Acne occurs when hair follicles clog up. Numerous factors can contribute to acne on the jawline, including genetics, certain conditions, and some medications.You may be able to treat jawline acne with over-the-counter medications. However, for more severe cases,your doctor may prescribe medication. Depending on the type of treatment and severity of the acne, it can take several weeks to notice an improvement.This article explains the causes and risk factors for jawline acne in more detail. It also discusses treatment opinions, when to contact a doctor, and more. What causes jawline acne? – Your skin lubricates itself with naturally occurring oils from the sebaceous glands. The sebaceous glands channel these oils to the skin surface via the hair follicle pores. Excess dirt, hair, and dead skin cells can clog these pores. Bacteria living on the skin surface may also grow into clogged pores, causing inflammation.This can ultimately lead to pimples or acne forming. Many factors can contribute to the appearance of acne on the chin and jawline, including: certain medications, such as steroids, lithium, and anticonvulsants, exposure to excess sunlight, endocrine disorders, such as polycystic ovary syndrome , genetics Other contributory factors include:Hormonal changes, Shaving,Face beauty products, Diet, Stress..