Hollow needle – The piercer inserts the needle into the earlobe, making a slit. With the needle in place, the piercer places jewelry in the hole, and removes the needle. 
Dermal punch – Like a piercing gun, the dermal punch removes a small a lot flesh with a device that is similar to a mini hole punch.Tattooing can be done by hand, but usually involves a special electric gun that repeatedly punctures the skin with an ink-coated needle. The needle goes about 1/10 of an inch into the skin (the dermis, or second layer), depositing the color in the hole. A tattoo is actually hundreds or thousands of tiny ink-filled holes, drawn in a pattern. It can take hours to get a tattoo. The process can be painful (topical anesthetics can help) and can cause a little bleeding.
Henna tattoos are done by applying a type of stain to the skin, made from the leaves of a plant. These tattoos usually are brown, green or red, and don’t last. They usually fade after a few weeks. However, longer-lasting black henna tattoos contain a chemical that can irritate the skin, causing it to itch, blister or scar.
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