Tattoo removal is a procedure done to remove an unwanted tattoo. A laser for tattoo removal emits adequate amount of energy to provide effective treatment. Lasers break down the ink particles of tattoos into smaller particles. Dermal macrophage is a type of white blood cell present in the immune system that traps and digests cellular debris, foreign substances, cancer cells. These macrophages collect the ink pigments but cannot efficiently break them down. So, the pigment is stored instead. In case of any damage caused to the macrophage, the stored ink is released and collected by other macrophages. Thus, it is difficult to remove tattoos. The laser treatments break down the ink particles into smaller pieces, and so the macrophages are able to get rid of the ink more easily.