Safety razor entitled "Fuck Everything, We're Doing Five Blades" predicted the release of five-blade cartridges, two years before their commercial introduction. South Korean manufacturer Dorco released their own six-blade cartridge in 2012, and later released a seven-blade cartridge. Gillette has also produced powered variants of the Mach3 (M3Power, M3Power Nitro) and Fusion (Fusion Power and Fusion Power Phantom) razors. These razors accept a single AAA battery which is used to produce vibration in the razor; this action was purported to raise hair up and away from the skin prior to being cut. These claims were ruled in an American court as "unsubstantiated
Razor whole straight-razor shaving kit can exceed the cost of even an expensive electric razor. Straight razors with open steel blades, also commonly known as cut-throats, were the most commonly used razors before the 20th century. Straight razors consist of a blade sharpened on one edge. The blade can be made of either high carbon steel, which is slower to hone and strop, and holds an edge longer, or stainless steel, which hones and strops quickly, but has a less durable edge. At present, stainless-steel razors are harder to find than carbon steel, but both remain in production. The blade rotates