These reports might be one reason Amazon removed the products, but Amazon never confirmed this
This small proteoglycan regulates collagen synthesis and organization Glycosaminoglycans Accumulate biphasically in wounds, creating the hydrated environment necessary for proper healing Dermatan Sulfate & Chondroitin Sulfate Production increases, collectively creating the hydrated, resilient matrix characteristic of youthful tissue Metalloproteinase Regulation for Balanced Matrix Turnover GHK-Cu exhibits sophisticated biphasic regulation of matrix metalloproteinases (MMPs) and their inhibitors, creating optimal balance between extracellular matrix synthesis and degradation
Haro JM, Kamath SA, Ochoa S, Novick D, Rele K, Fargas A, et al
Enhanced collagen production and accumulation by smooth muscle cells
Wrinkles: Reductions of nearly 60% in depth in some trials