What is the recommended number of Pico Toning sessions?

Hello! Recently, when I looked in the mirror, it seemed like my melasma and blemishes were getting darker, so I am looking into Pico Toning. I have heard that it works faster than regular toning, but I have a few questions, so I am writing this post.
First of all, I would like to know the recommended number of Pico Toning sessions to see definite results. I heard that the effects are minimal with just one session!
Also, what is a reasonable price for the procedure? I would be very grateful if you could give me a rough estimate of the total time required for the Pico Toning treatment, including the time for applying the anesthetic cream and washing my face.