A tattoo machine, also known as a tattoo gun, is a device used to create permanent designs on the skin. It works by using a needle to inject ink into the dermis, the second layer of skin. The machine operates through an electromagnetic system that rapidly moves the needle up and down, allowing for precise and intricate designs. Tattoo machines come in various types, including coil and rotary machines, each with its own mechanism and advantages. Artists often choose a specific type based on their style and the techniques they prefer. Proper maintenance and hygiene are essential to ensure safety and quality in the tattooing process.