Glutathione lightens skin by inhibiting the tyrosinase enzyme, which is essential for melanin biosynthesis, and by shifting production from darker eumelanin to lighter pheomelanin
There are basically 7 types of fillers, and each type works a little differently: Hyaluronic Acid (Juvederm, Voluma, Volbella, Vollure, Defyne, Reyne, Silk, Lyft, Belotero, Restylane) Calcium Hydroxylapatite (CaHA) (Radiesse) Poly-L-Lactic Acid (Sculptra) Collagen with polymethyl methacrylate (PMMA) beads (Bellafil) Collagen Fat Transfer Illegal Substances (including silicone) Hyaluronic acid fillers are by far the most common
Thus, TB-500 is one of the active fragments of that protein
Glutathione is naturally rich in sulfur, which is why it often has a distinct, slight scent