What is a true statement about henna?

Henna is derived from the leaves of the Lawsonia inermis plant, commonly known as the henna plant. This plant grows in warm climates and has a long history of use in various cultures for body art and hair dye due to its natural pigment, lawsone, which provides the characteristic reddish-brown color. The application of henna can be traced back to ancient Egypt and has been used in cultural and religious practices throughout the Middle East, Africa, and South Asia.

The other choices do not accurately represent henna. Specifically, it is not considered toxic; in fact, it is often praised for being a natural alternative to synthetic dyes. It was not created in America, but rather has origins in other regions, and it was not first sold by L'Oreal, as henna predates modern cosmetic companies significantly. Understanding the origins and properties of henna is crucial for those in the esthetics field, as it promotes safe and informed practices when using natural products in beauty treatments.