What is the duration of Rivicol's effects?

Has anyone here tried Revicol? Lately, I've been concerned about skin elasticity and the area around my cheeks, so I'm looking into Revicol. My biggest question is how long the effects last. I'm curious if the results are only effective immediately after the procedure, or if they persist to some extent over time. I'd like to know how long the effects typically last after a Revicol treatment. I understand it likely varies from person to person, but I'd like to know how long those who have actually received the treatment felt the effects. I would also appreciate it if you could let me know if it is a one-time treatment or if I need to get it done periodically to maintain the results. If I were to receive multiple treatments, roughly how many sessions would I need?