They reduce inflammation
The authors stated that the peptide had the effect of increasing melatonin concentration in the test subjects, thus contributing to enhanced control of the sleepwake cycle [6]
Fadilah NIM, Ahmad H, Rahman MBA, Chia SL, Ng S-F, Leong SW
For some local diseases related to the skin or nervous system, such as skin nerve injury, local neuropathy, etc., cream formulations can directly deliver drugs to the affected area, increase the concentration of drugs locally, and enhance the therapeutic effect
Sixteen participants spent five nights in a sleep lab, with the first night for adaptation and the second for baseline measurements
The consensus is that GHK-Cu can enhance results, but it usually complements other therapies (like vitamin supplementation, topical agents, or healthy lifestyle) rather than serving as a standalone fix