Guidance: External application of surgical plaster of traditional Chinese medicine can pull out pus and expel pus to remove foreign bodies, quickly improve microcirculation of tissues around the wound, increase local blood flow and promote the growth of residual epithelial cells. It has a unique curative effect on long-lasting wounds and other diseases such as skin infection, ulceration and bedsore caused by various reasons. No side effects. Feel free to contact me if you don't know anything. I wish you a speedy recovery!