Green soap is a vegetable oil-based, water-soluble, environmentally safe soap that is commonly used in tattoo and piercing studios, as well as in medical facilities. It is an all-natural soap made from pure vegetable oils and glycerin, completely biodegradable and environmentally friendly. Green soap is used for everything from prepping the tattoo or piercing site to cleaning tattoo machines. It is a great remover of dirt, blood, and tattoo ink. Green soap is not actually green in color, but it gets its name from its green tint, which comes from the glycerin and vegetable oil used in the manufacturing process. Green soap is a high-grade skin disinfectant and is used to sterilize the area to be tattooed or pierced. It is important to note that while green soap is environmentally friendly and a natural sanitizer, it may cause skin irritation in some people who are sensitive or allergic to any of the ingredients in green soap.