kuro sumi tattoo ink 1/2oz ounce 1/2 oz chi red kuro sumi kuro sumi tattoo ink is a bold, crisp and vibrant ink that has been a staple of the tattoo industry for more than a decade. originally formulated in japan that incorporates organic elements and are vegan friendly! bright bold colors that give your tattoos life and dimension - this ink is not made to blend in, it is made to stand out! made in the united states and guaranteed authentic.