Cartridge razors are a type of shaving tool that use replaceable blades housed in a plastic cartridge. These cartridges typically contain multiple blades, allowing for a closer shave with less irritation. The design often includes features like pivoting heads and lubricating strips to enhance comfort during shaving. Users can easily switch out the cartridges when the blades become dull, making maintenance simple. Cartridge razors are popular for their convenience and effectiveness, appealing to both men and women for daily grooming. They are widely available in stores and come in various styles and brands, such as Gillette and Schick.