A personal trainer is not on that list
Syn-Coll: Palmitoyl tripeptide-5, popular under the brand name Syn-Coll, is a synthetic peptide designed to stimulate the skin's production of collagen by stimulating transforming growth factor beta (TGF-) [30]
There is no one-size-fits-all answer, as your bodys needs can change based on your environment, age, and activity level
Metabolic Support: Helps maintain healthy metabolic function, making it an ideal companion for individuals focused on fitness, exercise recovery, and weight management
Both are backed by scientific research and global popularity, yet they work in completely different ways to improve your skin
doi: 10.1093/oxfordjournals.jbchem.a022661 120 DaiLLiJDongZLiuYChenYChenNet al