Acyclovir cream is mainly used to treat the herpes virus. It can be smeared on the face, such as the appearance of herpes zoster on the face or herpes simplex around the mouth, can be used Acyclovir cream, in the face of the use of topical drugs is mainly to avoid the prolonged use of glucocorticoid drugs, so as to avoid the emergence of hormone-dependent dermatitis resulting in reddening of the skin color, dilation of blood capillaries, thinning of the skin, the emergence of acne and so on, there is no obvious limitation of other drugs. Acyclovir cream is best used in conjunction with oral antiviral acyclovir, vasiclovir or famciclovir in the treatment of herpes viruses. Topical medication can only provide relief, and because herpes viruses are prone to co-infections, it is best to avoid contact with water to avoid co-infections with bacteria.