I am curious about the effects of pico toning.

People around me have been talking a lot about the effects of pico toning.
They say it's good for treating freckles. I've heard a lot that it's good for skin regeneration.
I'm wondering exactly what the picotoning effect is best used for.
Of course, both may have a significant effect, but they feel a little different.
I'm curious as to what people usually get picotoning for and how consistently they need to get it to see the full effect.