If dullness persists beyond eight weeks without improvement, your GHK-CU may be degraded or your skin may simply not respond well to this peptide
The problem gets worse: Some journals that acknowledged mistakes required a substantial fee to publish our letters: we were asked to spend our research dollars on correcting other peoples mistakes. One unnamed publisher even had the gall to declare that it would exact a fee of $10,000 from authors of withdrawn papers a draconian amount that clearly poses a disincentive to doing the right thing
Various structural alterations were made at the N-terminal such as substitution of D-norleucine for L-norleucine, N-acetylation of norleucine, and replacement of norleucine with GABA in order to improve overall stability by reducing susceptibility to aminopeptidases
GHK-Cu has the strongest mechanistic literature of the four
Those with inflammatory skin conditions may also experience improvements in symptom management
Although human clinical evidence is still limited, regenerative medicine clinics continue to investigate the potential role of GHK-Cu in connective tissue support
