[Antiseptic agents: chlorhexidine].

Chlorhexidine is a broad spectrum antiseptic widely used in clinical practice. This antiseptic works rapidly and its effects last for six hours. Since it is not absorbed through the skin nor through mucus, its systematic toxicity is minimum. It keeps on working in contact with organic matter and, since it is transparent, it does not hide the evolution of injuries. In this article, the authors review the properties and indications for this antiseptic; they also comment on some studies having lesser known indications.