Question regarding the duration of the Shrink Universe

I am curious about the duration of Shrink Universe and the synergy for improving melasma.

I am planning to get the Shrink Universe soon.
The part you want to check most thoroughly before the procedure is the duration of the Shrink Universe.
On average, how many months does the Shurink Universe effect typically last after a single treatment?
While the degree of perceived effect may vary from person to person, I would like to know the general retention rate.
If you happen to have any aftercare tips to maximize the duration of the Shrink Universe, please share them.