I also read that damage to/poor liver function is often not factored in for the "older" patient
Peptide concentration should be verified after reconstitution using appropriate analytical methods
But, there are other skincare options that can help with hyperpigmentation safely
Cells were separated from muscle tissue debris by differential centrifugation and filtration (nylon cell strainers) prior to a final centrifugation step at 1500 x g for 3 min, then suspended in DMEM containing 10% normal horse serum (HS), 1% antibiotic-antimycotic mixture, and 0.5% gentamicin (DMEM-10% HS), and plated on poly-L-lysine and fibronectin-coated plates
Sinha DK, Balasubramanian A, Tatem AJ, et al
Copper is essential for numerous enzymatic functions in the body, including collagen synthesis, antioxidant defense, and tissue remodeling