How do you usually schedule your Pico Toning treatments?

I am very stressed because pigmentation that wasn't visible before has surfaced on my skin after spending a lot of time outdoors since the summer. People around me recommended Pico Toning, so I am considering getting a consultation this week. Since I plan to receive treatment while working, I am wondering what the appropriate frequency for Pico Toning visits is. Do I need to go consistently once a week, or is it okay to get treatments every two or three weeks? Also, I would like to hear reviews of Pico Toning from those who have actually received treatment at a dermatology clinic. I would like to know if pain or redness lingers for a long time and causes any inconvenience in daily life. I look forward to hearing your valuable feedback.