Is henna considered a tattoo?

Is henna considered a 'tattoo'?
The short answer is No.
It is a form of art that stays on your skin for a few days and then goes away.

The long answer:
By definition, the word tattoo has two meanings according to google search.
1. mark (a person or a part of the body) with an indelible design by inserting pigment into punctures in the skin. 
2. a rhythmic tapping or drumming.

None of these apply to henna or its application.
Here's one of my Instagram videos showing henna application using a cellophane cone applicator.

Henna paste is applied on top of the skin.
The paste sits on top of the skin and there are no needles or any kind of pain involved.
Getting henna design done is a very therapeutic, calming and pampering experience.
It has no religious affiliations.
The henna art form is a part of several cultures spanning the continents of Asia and Africa. 

Please leave me your questions below.