What is the recommended number of Pico Toning sessions?

I understand that conditions like melasma can only be completely treated using a laser.
From what I hear from people around me, a lot of people are getting Pico Toning treatments these days.
It’s hard to say the price is very light, but it doesn’t seem like it will end after just one or two times.
People usually get laser treatment 5 to 10 times.
I think Pico Toning is a laser treatment that can achieve that level of results. For those of you who have treated melasma with Pico Toning, how many sessions did you need to be satisfied?