Hemostatic agents are substances used to promote hemostasis, the process that prevents and stops bleeding. They work by enhancing the body's natural clotting mechanisms or by providing a physical barrier to blood flow. These agents can be used in various medical settings, including surgeries and trauma care, to control bleeding effectively. There are different types of hemostatic agents, including topical hemostats, systemic agents, and biological agents. Topical hemostats are applied directly to a wound, while systemic agents are administered through the bloodstream. Biological agents often include components derived from human or animal tissues that aid in clot formation.