Henna tattoos are one of the most popularly searched tattoo designs on the internet today. It's safe to say that everyone who goes on to the tattoo parlor wants a good-looking piece of body art.

Kundan Henna posts their intricate and ornate Mehndi designs on Instagram. For a henna tattoo on top of a client’s hand, the artist starts off by creating a small flower.

While true henna is made from harmless plants, black henna uses a chemical called para-phenylenediamine, or PPD, which makes the tattoo dry quickly and last longer — and in some cases, that’s ...