The foreign body response is the body's natural reaction to the presence of a foreign material or substance, such as implants or cosmetics. This response typically involves inflammation, as the immune system works to remove or isolate the foreign body. In some cases, the foreign body response can lead to complications such as infection, rejection, or fibrosis. Researchers in this area study ways to better understand and control the foreign body response in order to improve the acceptance and function of implants and other foreign materials within the body. Strategies for mitigating the foreign body response may include modifying the material properties of implants, designing new materials that are less likely to trigger an immune response, or developing drug therapies to suppress the immune reaction.