Face shields typically cover the entire face and are secured over or around the head with an adjustable band. A face shield is frequently used in medical applications to protect the face and eyes from the splattering or splashing of biohazardous fluids. A full face guard covers the entire face while a mid-face guard covers only the eyes and nose. Both provide peripheral protection by wrapping around the sides of the face. Face shields may be tinted or metal coated for heat protection. A face guard should be used as additional protection; safety glasses or goggles should always be worn in conjunction.