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.
Straight razor the straight razor make for an active market. Some areas require barbers who provide straight-razor shaving to use a version that employs a disposable blade system. In places such as Turkey, Australia, New Zealand, Ontario, Pennsylvania, Denver, Boston, Texas and San Diego, however, the professional use of straight razors in barber shops is legal. The 2012 James Bond film, "Skyfall," has renewed interest in straight razors due to a scene when the agent shaves with one and his co-star Naomie Harris helps him finish shaving while remarking that “sometimes the old ways are the best”. Online straight razor retailers have