Costco’s Tincture of Green Soap is a tattoo shop staple! Green Soap is made from pure vegetable oils and glycerine, making it ideal for traditional skin preparation before tattooing or piercing. The soap is not green in color; it is considered "green" because it is organic, biodegradable, and environmentally safe. Green Soap is often used by artists to prep skin, remove soil, blood, and ink, and as a soak for surgical instruments. Specifications: Net Weight: 0.6lb Skin prep for tattoos & piercings Soak for surgical instruments Organic, biodegradable & environmentally safe Directions for Skin Prep Use: Mix 10% Green Soap with 90% Distilled Water. Apply to skin. Directions for Instrument Soak Use: Mix 1 cup of Green Soap and 1 quart of distilled water. Soak instruments.