Because each tattoo is unique, removal techniques must be tailored according to case-by-case basis. In the past, tattoo could be removed by a wide variety of methods but, in many cases, the scars were more unsightly than the tattoo itself. Patients with previously treated tattoo may also be candidates for laser therapy. Tattoos that have not been effectively removed by other treatments may respond well to laser therapy providing the prior treatments did not result in excessive scarring.