Neckties were originally worn to allow for the mopping of sweat from the face, but as this is now against health regulations, they are largely decorative. The chef's neck tie was originally worn on the inside of the jacket to stop sweat running from the face and neck down the body. The jacket is usually white to show off the chef's cleanliness and repel heat, and is double-breasted to prevent serious injuries from burns and scalds. The double breast also serves to conceal stains on the jacket as one side can be rebuttoned over the other, which is common practice.