For those who have received Pico laser treatment, how many sessions do I need to see results?

Hello. My skin looks duller than before due to melasma and blemishes, so I am looking into Pico Laser. I see many reviews saying it helps improve pigmentation, but since there are individual differences, I would like to hear opinions from those who have actually experienced it.

How many treatment sessions did you typically need to see noticeable changes? I am curious whether 1 or 2 sessions were effective, or if consistent treatment of 5 or more sessions was required for higher satisfaction. I would also like to know how long it takes for my skin tone to become even.

I am also curious about whether redness or scabs will form after the procedure, and whether I can resume my daily activities immediately. Since I work, a long recovery period would be a bit of a burden. I would also appreciate it if you could let me know how much attention I need to pay to using regenerating cream and sun protection after the procedure.

It seems there are significant differences in equipment and prices among hospitals, but I have heard that the experience of the medical staff is also important rather than choosing based solely on price. For those who have actually received the treatment, I would appreciate your honest reviews regarding the criteria you used to select a hospital and your level of satisfaction. Since this is my first time receiving laser treatment, I have many questions.