Some practitioners offer tattoos that they claim to be temporary, but will last for a period of years rather than days. These are applied using a tattoo gun, and are therefore the closest substitute for the permanent tattoo experience, including the discomfort. These tattoos are supposed to gradually fade away over time, leaving no trace. Some tattoo artists claim that the inks are inserted closer to the surface, allowing them to gradually slough off, while others claim to use special inks that naturally disperse over time.
There is some discrepancy as to whether these semi-permanent tattoos are in fact "temporary tattoos" at all. In practice, semi-permanent tattoos have had mixed results, and caution would say that any tattoo performed by inserting pigment under the skin should be considered permanent.