Ensure the site is clean, then pinch or stretch the skin at the injection site
Moragues MD, Ortiz N, Iruretagoyena JR, et al
What about cost differences
Advantages: Localized delivery to target tissue (skin, scalp) Non-invasive Lower systemic exposure Well-tolerated with established safety record in cosmeceuticals Limitations: Limited dermal penetration (molecular weight ~340 Da near the cutoff for transdermal absorption) No systemic anti-aging or anti-inflammatory effects Efficacy dependent on formulation vehicle (liposomal carriers significantly improve penetration) GHK-Cu Injection (Subcutaneous) GHK-Cu injection is explored in research settings for systemic administration
Int J Mol Sci 23(11):6046 E S, Srikanth MS, Shreyas A, Desai S, Mehdi S, Gangadharappa HV, et al
metastatic tumors rely on pyruvate, glutamine, and lipid metabolism, and cancer stem cells depend on mitochondrial metabolisms such as OXPHOS and aerobic glycolysis [12,37]