Acivir Cream is a medication with antiviral properties that effectively treats skin infections caused by the Herpes simplex virus including herpes labialis The cream works by inhibiting the virus from replicating in the skin cells ultimately assisting in the elimination of the infection It is important to note that Acivir Cream is intended for external use only When applying the cream it is crucial to follow the prescribed dosage and duration as directed by your doctor Before using the ointment ensure that the affected area is clean and dry Additionally it is essential to thoroughly wash your hands before and after applying the medication Avoid touching the sores unnecessarily with your hands or towel to prevent the spread of the infection