Is it safe to get laser hair removal treatment done on your face and pubic area?

The place I'm considering uses Candela Gentle Pro Max. I have never done laser before. I have medium deep Indian skin tone and thick black hair. I'm really concerned about the side effects and scarring especially. Also, how badly painful will it be. Can someone share their own experience. Also, how can I make sure that the procedure is done correctly and the technician doesn't scarrs my skin.