Works to reduce future outbreaks; a gentle blend for daily use between cold sore occurrences. Apply to the area(s) of recurrence when NOT having an outbreak. Great for those people with frequent cold sores. Lasts over 2 months. Comes in a base of sesame oil with organic essential oils: tree tree, hyssop, melissa, eucalyptus, citriodora, palmarosa, lavadin. Comes in a 10 ml bottle.