I'm trying to get a skin booster for the first time.

I've heard a lot of people recommending Rejuran and Juvelook. Is there a big difference between the two? I only want to improve my skin texture and fine pores, so I'm hesitant about anything too extreme. The more I look into it, the more confused I get because there are so many types... I'm also curious about the level of pain and if the recovery period is long.