According to a Psychology Today article: There have been many studies of this compound, including neuroimaging studies, and it has been investigated in innumerable disorders depression, bipolar disorder, OCD, PTSD, schizophrenia, addiction, eating disorders, Alzheimers disease, and addiction
doi: 10.1097/SHK.0b013e3181c3cf0e
Manhes-de-Castro, A.E
If you compress everything above into a single honest verdict, it is this: for skin, the evidence points to topical GHK-Cu as the route with actual human support modest, imperfect, but real while injectable GHK-Cu for skin remains an extrapolation that has not been tested in controlled human trials
I order an MRI first to confirm exactly where the tear is and what shape it has before recommending the non-surgical path