How effective is the skin booster? I'm asking because I'm curious!

Lately, my skin has felt particularly dry and dull, and I feel like it has lost some elasticity, so I am considering getting a skin booster. When I search online, there are so many types of skin boosters, and since their effects vary, it’s actually confusing to figure out which one is best. That’s why I’m really curious to hear the opinions of those who have actually tried them!

In particular, I would like to know if skin boosters are really effective for replenishing moisture, and if I can feel my skin becoming firm immediately after receiving the treatment. I am also concerned about the severity of side effects, such as redness or bruising, after the procedure.