Henna (Lawsonia inermis), is basically a shrub, the leaves of this shrub are used for making henna. The art of henna comprises of simple henna designs for hands, like- leaves, flowers and animal drawings to name a few. br br Henna on hands gives a cooling effect. Generally, henna is kept on the hands for about 4-5 hours, but many leave it on overnight, in order to get that deep red color. Traditionally, mehndi was applied only on festivals like Eid and Diwali, but nowadays, you don’t need any reason to adorn your hands and feet with henna. Gone are the days when henna hand designs were considered to be next to impossible for beginners. Today, hand henna designs are so easy to learn, that it makes everyone feel at ease during the learning process.