Mehendi ...

Mehndi (or mehendi or mehandi or mylanji) is the application of henna (Urdu: حنا) as a temporary form of skin decoration, most popular in the Middle East, North Africa, and South Asia as well as India. It is typically employed for special occasions, particularly weddings. It is usually drawn on the hands and feet, where the designs will last the longest due to the fact that it only penetrates the dead cells of the stratum corneum.
Henna paste is usually applied to the skin using a plastic cone or a paint brush, but sometimes a small metal-tipped jacquard bottle used for silk painting (a jac bottle) is used. The affected area is then wrapped with tissue, plastic, or medical tape to lock in body heat, creating a more intense colour on the skin. The wrap is worn overnight and then removed. The final colour is reddish brown and can last anywhere from two weeks to several months depending on the quality of the paste. More ...
The lance- shaped leaves from the bush are harvested, dried and then crushed to make the henna powder. Henna is used for hair dye, as a skin conditioner and as a reliever for rashes. Refer ...