doi:10.1007/s10815-012-9714-1
In summary, treat reconstituted peptide solutions as perishable
The skin benefits tend to take a bit more patience - initial brightening usually appears around the two-week mark, but those more dramatic improvements in tone and texture develop over several months of consistent treatment
Evidence type: Human RCT | Observational | Animal | In vitro | Regulatory Mechanism of Action As a copper chelator, GHK-Cu modulates over 4,000 human genes, upregulating those involved in tissue remodeling (e.g., collagen I, III) and downregulating pro-inflammatory pathways like NF-B
The experiment was divided into a normal control group, a radiotherapy model group, and a radiotherapy+IGF-1 LR3 treatment group (1mg/kg, orally taken from the first day after radiotherapy, once a day, for 7 consecutive days)
For BPC-157, see What Is BPC-157