Safety razor the second blade cuts it further. The extent to which this is of practical consequence has, however, been questioned. Gillette introduced the first triple-blade cartridge razor, the Mach3, in 1998, and later upgraded the Sensor cartridge to the Sensor3 by adding a third blade. Schick/Wilkinson responded to the Mach3 with the Quattro, the first four-blade cartridge razor. These innovations are marketed with the message that they help consumers achieve the best shave as easily as possible. Another impetus for the sale of multiple-blade cartridges is that they have high profit margins. With manufacturers frequently updating their shaving systems, consumers can
Straight razor three factors: First according to the shape of the profile of the point of the razor, second according to the type of grinding method used for the blade; the degree of curvature, and therefore hollowness (or thinness), of the sides of the cross section of the razor blade depends on the grinding method. Finally the blades are categorised according to their width. Blades are, at first, categorised according to point, or nose, type. The following are the main types of points: The second category refers to the type of grinding method used and, since it affects the curvature of the