Face masks, also known as surgical masks have a dual purpose - to prevent the spread of infections by the wearer, and also to prevent the individual wearing the mask from contracting any airborne infectious germs. They reduce the risk of any particles like spit or mucous that may be expelled by the wearer from spreading to anybody else. They're often used in medical settings, during surgeries, dental practices, and cosmetic procedures, but their uses extend a lot further than just clinical environments.