I'm curious about the duration of the acne treatment!

I've been under a lot of stress because of my persistent acne, so I'm considering getting an acne treatment.

I made a big decision to invest time and money into getting an acne treatment,
As expected, my biggest concern is the duration.

After asking my acquaintances and listening to them...
There are people who say they regret getting the treatment because their acne only improves temporarily while they are getting it and then flares up again quickly.
There are people who say they are very satisfied because their constitution changes completely if they receive it consistently.

Usually, after receiving anti-inflammatory injections, extractions, or laser treatments...
How long does clear skin last?

I am also curious if the acne has recurred after the treatment.