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
American Safety Razor Company they introduced the standard single edge rib-back blade that is still used today. In 1915 Ever-Ready Shaving Brushes were first introduced and continued to be produced until the early 1990s. In December 1919 The Safetee Soap Corporation formed as a subsidiary of American Safety Razor Corporation and produced a line of shaving soaps, creams, powders, talc and aftershave lotions to compliment the safety razor business. The Safetee Soap line was cross-promoted in pamphlets included in other ASR products. Gem & Ever-Ready merged with Star to become the American Safety Razor Corporation in 1919. It was chartered in Virginia, while razor