9. Peppermint Oil
Peppermint leaves and stems contain the volatile oil menthol, which is used in herbal preparations, and the medical journal “Phytomedicine” reports peppermint oil exhibits strong antiviral properties and is able to penetrate the skin effectively. Peppermint oil comes in topical and oral preparations. Dilute three drops of peppermint oil in once ounce of coconut, almond, or olive oil and dab the solution on sores with a cotton swab 2-3 times daily. Note: Do not apply peppermint oil to a child’s cold sores, as it can prompt a life-threatening respiratory condition.