This article was medically reviewed by Luba Lee, FNP-BC, MS and by wikiHow staff writer, Cheyenne Main. Luba Lee, FNP-BC is a Board-Certified Family Nurse Practitioner (FNP) and educator in Tennessee with over a decade of clinical experience. Luba has certifications in Pediatric Advanced Life Support (PALS), Emergency Medicine, Advanced Cardiac Life Support (ACLS), Team Building, and Critical Care Nursing. She received her Master of Science in Nursing (MSN) from the University of Tennessee in 2006.
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Cold sores are a frustrating flare-up around your lips that form due to the herpes simplex virus. These blisters are filled with fluid, but dry out and form a scab, or crust, along the edge of your lip after a few days.[1]
While cold sore scabs will heal and go away on their own, you can try a few different remedies to make the healing process more comfortable.Tip: Look for antiviral creams and gels containing “aciclovir” or “penciclovir.” If you take these within 24 hours of showing symptoms, you may be able to speed up the healing process by about 1 day and can prevent blisters and scabs from forming. Apply these medications every 2 to 3 hours over 5 days.[8]
Tip: Check that your sunscreen has a minimum SPF of 15![15]
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