Henna: Medieval Temporary Tattoo Set These beautiful temporary tattoos make the often time-consuming traditional dying of the skin involved in henna tattooing easier. They have brought the wait time down from hours to seconds without the semi-permanent staining. It takes 30 seconds and some water to apply the tattoos. The stunning lines and designs of traditional henna are still intact, too. This medieval collection centers on flowers and natural themes. The circular designs work well on shoulders and backs. The stemmed flowers might be the accent you're looking for on a wrist or ankle. The design and placement of your temporary tattoos is up to you and your creativity.