Is Pico Toning effective on the light pigmentation next to the nose?

I see very small brown spots here and there on the sides of my nose and inside my cheeks, so I am considering Pico Toning.

They aren't as distinct and dark as dots; you have to look closely to see them, but having several of them makes my skin look uneven overall.

I've been using whitening products consistently, but the areas where I already had breakouts don't seem to be changing noticeably.

Would Pico Toning be effective even for such light pigmentation? I am wondering if Pico Toning is a procedure that requires repeated treatments to gradually lighten the pigmentation, rather than a treatment that eliminates it all at once.

I would also like to know if the intensity is determined after checking the depth or type of current pigmentation when receiving Pico Toning for the first time. Rather than doing it too strongly, I want to manage my skin naturally while minimizing irritation.