Mushrooms are very useful for humans. They are used as cholesterol-lowering agents, antibacterial, and immune system enhancers. In addition to this, they are also very important sources of bioactive compounds. Some mushroom extracts are used because of their properties to promote human health and are found as dietary supplements. They were used for dyeing wool and natural fibers before the invention of synthetic dyes. Mushroom dyes are organic compounds that are used to produce vivid as well as colors.