I'm curious about the effects of Rivicol. What is the recommended dosage?

I feel like my skin elasticity has decreased lately, so I am looking into the Revicol treatment. Many people around me have recommended it as well. I became curious about just how effective it is, especially since it is said to replenish collagen deep within the skin. I am wondering if there is a difference after just one session, or if I need to receive the recommended number of treatments to maintain the results.
I'm looking into Revicol because there are so many different reviews, and it seems like satisfaction is high regarding skin texture improvement and elasticity. I'm also curious about the level of pain and how long the procedure takes. If anyone has received Revicol, I'd love to know about the actual effects or who you would recommend it to get some insights!