Unfortunately, we can never guarantee complete removal. Removing the tattoo does not cause any scarring, although the act of tattooing can cause a scar that is less visible while the ink is there. If your tattoo feels raised to the touch then when the ink is removed that will still be there.
Most patients will see improvement in the appearance after the first treatment. Sometimes this improvement is dramatic, and sometimes it can be subtle. It takes time for the immune system to fully absorb the treated ink.