Treats Cold Sores, Fever Blisters On The Face or Lips This unique blend plant butters and oils works to soothe, smooth and heal cold sores, fever blisters and restore moisture to dry lips. Manuka oil is proven to be strongly antiviral, providing an effective remedy against cold sores. Mango, Shea and Cocoa butters create a protective natural barrier while retaining moist lips. Our natural lip saver treats cold sores, fever blisters on the face or lips. Shortens healing time and duration of symptoms.