Inquiry regarding PicoToning retreatment for stubborn pigmentation that has recurred after treatment at another hospital

Hello. I received pigmentation treatment at another clinic a few years ago, but the pigmentation has recently darkened again, so I am inquiring about receiving retreatment.

I hesitated to undergo treatment because I previously experienced a "spotting" phenomenon where the area actually darkened slightly after a laser procedure. I recently learned about Pico Toning, a procedure with precise pigment destruction capabilities, and I am wondering if it can be safely applied to recurrent or darkened pigmentation conditions like mine.

I would like to know if you measure the pigmentation depth using precision skin diagnostic equipment before the procedure and proceed with Pico Toning at a customized intensity. I am also curious whether the treatment is conducted on a session-based deduction system, or if a customized prescription is provided after periodic consultations while monitoring progress.

Please also check if the issuance of a medical certificate or other documents eligible for indemnity insurance claims is supported when receiving Pico Toning for therapeutic purposes.