In the rats that received GHK-Cu, the researchers found an increase in total protein and collagen synthesis greater than that of the placebo group, demonstrating that GHK-Cu is able to increase extracellular matrix accumulation in wounds in vivo .28 Are GHK-Cu copper peptides safe
Unless indicated otherwise, cystine-free medium was prepared by supplementing cystine-, methionine- and glutamine-free DMEM (Gibco, CA, USA) with 100 M methionine, 4 mM glutamine, 1 mM sodium pyruvate, 0.2% bovine serum albumin (BSA), 100 U/ml penicillin and 100 g/ml streptomycin
Oral bioavailability in humans remains an assumption
While these supplements work from the inside out, excessive UV exposure is the number one cause of collagen breakdown