Many tattoos require between five and ten laser tattoo removal treatments, depending on size and darkness. Tattoos that are larger in size and ones that have darker areas will take up to the ten sessions, whereas smaller tattoos and ones with lighter colors may be closer to five sessions. It is safe to assume that each tattoo being treated will require a number of treatments somewhere within this range. However, this is a general answer and may not apply to every situation because the laser removal of tattoos depends on several different factors.