For those of you who have received Rejuran, how were the effects and pain?

I've heard that Rejuran helps improve skin texture, internal dryness, and fine lines. For those of you who have actually received it, what were the results like?

I am curious if I can feel the effects after just one session, and how many sessions are usually needed to be satisfied. I heard that the injections can be quite painful; please let me know if it is bearable if I apply anesthetic cream.