A tattoo is body art made by inserting indelible ink.

A tattoo is body art made by inserting indelible ink into the dermis layer of the skin to change the pigment. Tattoos on humans are a type of decorative body modification, while tattoos on animals are most commonly used for identification purposes. The first written reference to the word, “tattoo” (or Samoan “Tatau”) appears in the journal A tattoo is body art made by inserting indelible ink into the dermis layer of the skin to change the pigment. Tattoos on humans are a type of decorative body modification, while tattoos on animals are most commonly used for identification purposes. The first written reference to the word.