I had 4 sessions at a tattoo removal place, then changed to a new place where I’ve now had 2 sessions. The last 2 times it hurt during the treatment as usual, but afterwards there was no tenderness or scabbing. It feels and looks fine the day after. I’m afraid I’m throwing money at a machine thats doing nothing. Or is this normal when you’ve had multiple sessions already? Also, what should the voltage be set at? The machine ranges from 800-1000v.