Rinse your face gently with cold water afterwards, and throw away the used cotton ball. Make sure not to ingest the hydrogen peroxide as you apply it.
[header] How to get rid of a cold sore with home remedies [title] Use hydrogen peroxide. [step] Hydrogen peroxide has antiseptic and antiviral properties that can help reduce inflammation and fight the viral infection causing the cold sore. [substeps] Soak a cotton ball or cotton swab in one teaspoon of hydrogen peroxide and hold it directly over the cold sore for five minutes.