Acne at the age of 14 is usually caused by hormonal changes in the body during puberty, resulting in sebaceous glands and blocked hair follicles, and can be treated with medication and improved lifestyle habits. At the age of 14, you have already entered puberty, and during puberty, hormonal changes lead to exuberant sebaceous gland secretion, triggering the onset of acne, which can be treated with topical retinoic acid ointment, adapalene gel, and so on, and for those with severe symptoms, doxycycline and minocycline can be used for treatment. In addition, you can improve your lifestyle, such as eating a light diet, avoiding spicy and oily foods, using non-irritating cleansers to wash, and avoiding late nights. If you are 14 years old and have acne on your face, your parents should take you to the hospital in time for standardized treatment under the guidance of the doctor. The medication should follow the doctor’s instructions to avoid delays.