Tattoo is a mark made by inserting pigment into the skin; in   technical terms, tattooing is dermal pigmentation. Tattoos   may be made on human or animal skin. Tattoos on humans   are a type of body modification, while tattoos on           animals are most commonly used for identification or   branding.

  Tattoo removal is most commonly performed using lasers    that react with the   ink in the tattoo, and break it down.