I'm curious about the recommended number of treatments for blemishes. How many sessions do I need to take for them to fade?

A colleague recently got treatment for blemishes and saw a dramatic change in their skin tone, so I'm looking into it myself. I tend to have a lot of blemishes on my cheekbones and cheeks, and lately, even if I apply a thick layer of foundation, they are all visible in natural light, which is stressing me out. Due to the nature of my marketing job, I have frequent external meetings, so I'm also quite conscious of my skin condition.

What I am most curious about is the recommended number of treatments for blemishes. I would like to know how many sessions are needed to see noticeable lightening, and how often the sessions should be spaced.

I am also curious about the downtime. Is it subtle enough that I can go to a meeting immediately after the treatment without any visible marks? Please also let me know how strictly I need to protect myself from UV rays after the blemish treatment.

I am also curious if there are any precautions I should be aware of before starting blemish treatment, and if the blemishes might reappear after the procedure. I tend to use face masks and apply makeup every day, so I would like to know if those habits also have an impact.

To summarize, I am an office worker in my late 20s concerned about blemishes on my cheekbones, and I am most curious about the frequency of sessions and aftercare methods. I would appreciate advice from those with experience treating blemishes!