Tattoo marks are designs made in the skin by multiple small puncture wounds with needles or an electric vibrator dipped in coloring matter. The dyes commonly used are Indian ink, carbon (black), cinnabar or vermilion (mercuric sulphide) red, chromic acid (green), indigo, cobalt, prussian blue (ferric ferrocyanide), ultramarine (blue). Techniques… Continue Reading Tattoo marks – complications, erasure and importance