Get creative and design your own black work tattoos. Choose from over +3000 unique designs on mobile app. Old school, cartoon characters, geometric shapes and beyond, if you want a tattoo to truly pop, Prinker is the way to go. FDA VCRP registered cosmetic ink. Waterproof, last up to 2 days, soap-washable. Prinker uses a cartridge with enough ink to apply about 1000 tattoos. Skin Primer's unique cosmetic formula helps to fix ink and enhances the longevity of your tattoos.