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A Sharecare Ad Target User , Administration, answered. An outbreak of oral herpes, or cold sores, should go away on its own in about one or two weeks. Antiviral medications can help them heal faster if taken early. Talk to your doctor if your cold sores do not go away after two weeks. Helpful? 1 person found this helpful.
Cold sores typically heal within 2 to 3 weeks, but recur throughout your life. Although there is no way to cure cold sores, there is some evidence to suggest that essential oils can help soothe pain, lessen swelling, and speed healing. Wait until your cold sore has scabbed over before applying essential oil.