COSCO Tincture of Green Soap (Gallon) U.S.P. has been around since 1966 and is used by more tattoo artists than any other brand (Green Soap is also known as “Liniment of Soft Soap”). This natural soap is made from pure vegetable oils, glycerin and lavender, and is biodegradable, environmentally safe, and made in the USA. Use it for pre-tattoo skin preparation, stencil application, post-tattoo cleansing, as well as for cleaning surgical or tattoo instruments before sterilization. It is even an excellent lathering hand cleanser and shampoo! Diluting Suggestions: For cleaning instruments before sterilization – mix 1 part soap to 16 parts distilled water. For use as a shampoo or hand cleanser – use full strength. For general use – mix 1 part soap to 8 parts distilled water.