What is the skin booster cycle?

People around me who have had skin treatments definitely look different.

Of course, there were some people who didn't see the results they expected.

But, after listening to the story, I heard that it is better to do it at regular intervals.

I have no experience with skin-related procedures.

I am curious about what procedures are good for beginners and how often they should be performed.

I'm curious if the procedure is done all at once and how many times per procedure is required.