Herpes on the lips can heal on its own, yet it is difficult to heal on its own within 3 days. Herpes on the lips is usually caused by a viral infection called herpes stomatitis, and as the virus invades, the body spontaneously develops an immune response to fight the virus. Once the virus is under control, herpes on the lips will gradually scab over and peel off, and can heal itself in about 1-2 weeks. However, with herpes on the lips, blisters will grow on the lips, and ulcers will form after infection, accompanied by pain, and it is best to treat them with medication in a timely manner. On the treatment of herpes on the lips, you can take antiviral drugs under the guidance of a doctor, such as vasiclovir hydrochloride tablets, famciclovir tablets, etc. You can also apply antiviral ointment, such as acyclovir cream, penciclovir cream, etc., which can control viral infections and promote recovery. Although herpes on the lips can heal on its own, it takes a long time to heal on its own, so it is recommended to go to the dentistry department of a regular hospital as soon as possible for consultation and treatment.