Cold sores or herpes labialis is a mild infectious disease caused by a highly contagious virus that is transmitted by direct or indirect contact with an infected person. It appears in the form of bubbles like small blisters at the level of the mouth.
Ideal and treat it as soon as you feel the first symptoms, which are tingling and before the pimple comes out. Do not forget to wash your hands well after applying the treatment and if possible do not touch it. Also avoid picking off dead skin.