Razor be used on both sides, with two open edges. The blade on the double-edged safety razor is slightly curved to allow for a smoother and cleaner shave. In 1901, the American inventor King Camp Gillette, with the assistance of William Nickerson, patented a new variation of safety razor with disposable blades. Gillette realized that a profit could be made by selling an inexpensive razor with disposable blades. This has been called the razor and blades business model, and has become a very common practice for a wide variety of products. Many other brands of safety razors have come and gone.
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