Mehron Black Henna Ink is not "ink", but rather a cosmetic reproduction of ink made with safe, high quality ingredients. Mehron Black Henna Ink is long lasting and water resistant. Stays for over a week under normal circumstances, but can be removed any time with soap and water. Not recommended for use on children. Mehron Black Henna Ink is a safe alternative to normal "tattoo ink" for creating temporary tattoos or tattoos for theatrical / stage performances. Also ideal for body and face painting. Comes with an applicator in a 0.5 ounce jar.