Henna is a dye made from the leaves and stems of the Lawsonia inermis tree, which is native to India and Africa. Making henna involves grinding the leaves and stems and adding an acidic compound to form a paste. Henna has a long history of use in Mehndi, or ritual skin art practiced in the Middle East, Africa and India; however, Westerners adopted this dye for temporary tattoos and hair coloring. Artists typically form henna into cones for applying temporary tattoos.
Use scissors to cut mylar into rectangles about 6 in. by 7 in.
Place a mylar rectangle on a clean, flat surface with the wide edges at the top and bottom. Grasp the upper right corner of the rectangle and bring it to meet the center of the bottom edge.
Roll the mylar to the left to form a cone shape. The center of the top edge forms the point of the cone, which should have a small hole about the size of a pencil tip. Place tape on the outer seam to secure the cone shape.
Place tape around the tip of the cone to prevent the hole from expanding when you fill the cone with henna.
Fill the cone about one-third full of henna paste. Twist the remainder of the mylar to form the back end of the cone.
Wrap a rubber band around the mylar at the back end of the cone, just above the henna. As you apply henna, you can roll the rubber band down toward the tip to compress the henna inside the cone.
Snip the tip of the cone if you want to create wider, darker lines when applying henna tattoos.
Wear rubber gloves when constructing henna cones -- the henna will stain your fingertips.