can anyone who specializes in skincare of any sort help me?

i’ve been using this serum for a couple months because so many people have recommended it but i’ve seen a few people say it’s really bad for you. apparently it’s more of a treatment for when you’re older and your skin is more dull and it does more harm than good to younger skin. i forgot exactly what they said but something about your skin producing less collagen because it becomes reliant on hyaluronic acid. any opinions?