How many Rejuran sessions do I need to see results?

I'm looking into getting Rejuran for the first time, and I have a lot of questions.
Lately, my skin feels dry and dull overall, and it seems to have lost some of its elasticity compared to before.
In particular, the skin texture on my cheeks has become rough, and fine wrinkles have started to appear little by little.
My makeup doesn't apply as well as it used to, and by the afternoon, my skin looks even drier.
So, rather than just home care, I want to take care of my skin itself, so I am looking into Rejuran.
However, I looked it up and found that some people felt the effects after just one session, while others said they need to do it several times.
I am wondering how many sessions are usually required to noticeably improve skin texture or dryness.
I am also curious if there are people who were highly satisfied after receiving it just once.
If this is my first time, I am curious about the usual intervals and how many times it is done.
For those who have actually received this, please share your experiences regarding when you started feeling the effects.