A callus razor is a pedicure tool that is used to slice away large amounts of dead skin from the bottoms of the feet. The tool has a handle and a metal head where the razor fits. The head of the razor has slot where disposable razors can bit fitted and removed. Most companies that sell this kind of razor also sell razor blades that fit into the head of the tool. Many of these razors are also designed to accommodate any kind of straight razor blade.
This tool, which is also sometimes referred to as a "callus shaver," must be used with extreme caution. This is because the sharp callus razor can easily cut through the dead skin and, if the user is not careful, also cut into live skin and cause the foot to bleed. Furthermore, it should only be used on people who have thick layers of calluses to remove. Thinner calluses should be treated with a pumice stone, foot scrub, or some other type of callus remover that will not take off so many layers of skin at a time.
A callus razor has a covering over the razor so that, when the head of the tool slides across a callus, it takes off a layer at a time. Even still, if the calluses are too thin, it can take off a layer of living skin along with the callus. For this reason, there are restrictions against the callus razor in many areas. In many places, this kind of tool may not be used in salons and spas because of the dangers of injuring the clients and also the biohazard of an open wound, especially if that wound were to bleed into a pedicure tub that is intended to be used by other clients.
Even though the callus razor is restricted from commercial use in many areas, some people use this tool during home pedicures. It can be especially useful for people who regularly get callus buildups on their feet. It is a good idea to always leave a thin layer of callus on the foot. If only tender, fresh skin is left on the foot, it is much more likely for a person to get blisters and other sort of irritations on the feet just during daily activities. This is another reason why a callus razor should only be used on feet that have very thick calluses.