Skin Booster, the perfect match for Shrink?

These days, many people seem to be starting with Shurink as a light introductory treatment, which is why I am most interested in it as well. Since there are many comments saying that Shurink alone is slightly lacking, I see that many people combine it with a skin booster. What are the best skin boosters to pair with Shurink? What are the actual effects of using both together? I am curious to know what aspects were more satisfying compared to getting Shurink alone.