A material used to unite two cut surfaces. Tissue adhesives are usually cyanoacrylate monomers which, when they come into contact with moisture on the skin's surface, chemically change into a polymer that binds to the superficial epithelial layer. It has advantages over sutures in that it can be applied using a topical anaesthetic without the use of needles, there is a faster repair time, it is better accepted by patients, it provides a water-resistant covering, and it does not require the removal of sutures. It is however contraindicated for use on mucosal surfaces. Trade names: Dermabond, Indermil.