Laser removal works by emitting energy of various wavelengths that pass into the skin and is absorbed by a specific coloured pigment in the tattoo. This fragments the pigmentation into nano-particles which are gradually removed by the body’s natural filtering systems (phagocytosis). The kind of tattoo one has determines the kind, intensity or wavelengths of the laser, and the number of sessions required. Do understand that it is impossible to actually remove a tattoo, you can lighten it, nothing more. You will never get back the flawless skin that you had before you got the tattoo done. There is always a ghost mark. Even if it goes off the skin becomes discolored. There are multiple hospitals in Bangalore which do the treatment.