How does the effect of Pico Toning last, and how is it maintained?

I am writing to inquire about the duration of Pico Toning results.

I am considering Pico Toning because of light blemishes around my cheeks and a dull skin tone, and I would like to know how well the results are maintained after a certain number of sessions. Since pigmentation can reappear depending on UV rays or lifestyle habits, I think post-procedure care is also important.

I am wondering if my skin tone can become dull again or blemishes become noticeable over time, even after it has been evened out to some extent with Pico Toning.

In that case, I would also like to know if it is important to consistently use sunscreen or whitening products to maintain the effects of Pico Toning for a long time.

Is it possible to receive Pico Toning at regular intervals initially, and then get maintenance treatments about once every few months afterwards?

I am curious about a way to manage my skin long-term without putting too much strain on it.