A Nature Scientific Reports 2016 study showed GHK-Cu had no cytotoxicity to human keratinocytes at concentrations up to 5,800 M over 72 hours and did NOT induce inflammatory biomarkers (IL-1, IL-8, HSPA1A, FOSL1) unlike other copper compounds, concluding GHK-Cu has a low potential of inducing skin irritation
Storage and Stability Guidelines Proper storage is critical to preserve the structural integrity of the GHK-Cu complex and maintain reproducible activity in experimental systems
The results
Supplementation with macular carotenoids reduces psychological stress, serum cortisol, and sub-optimal symptoms of physical and emotional health in young adults
A safe injectable dosage typically falls within 6001200 mg weekly or twice a week[2]
What it can genuinely help with, in dermatology hands, is severe, treatment-resistant pigmentation