What are possible complications of laser tattoo removal?

Because the laser in tattoo removal creates heat when the tattoo is destroyed, it generates scar tissue -- usually white and often shiny. True, it is hard to know how much scar was created by the actual process of getting the tattoo, but I believe that most of the scar comes from the heat of the laser. Lasers can unexpectedly change the color of tattoos.

This huge problem causes the immediate and irreversible pigment darkening of white, pink, and flesh-colored inks. Ruby, alexandrite, neodymium:yttrium aluminum garnet, and pulsed dye lasers can cause this unpredictable change. If this happens, the only solution may be to cut out the tattoo.

The laser can also release contained pigment, causing an allergic reaction.

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