Thomas A, Grgens C, Guddat S, et al
At concentrations commonly used topically (0.2-2%) GHK-Cu is expected to be compatible with a variety of aqueous vehicles
Their staff, especially their nurse, is top tier
[1] Several controlled facial studies confirmed anti-aging, firming and anti-wrinklea ctivity of copper peptide GHK-Cu
Pickart stated that GHK-Cu has a favorable safety profile, highlighting that there is no indication that it causes side effects in test subjects [2]: The molecule is very safe and no issues have ever arisen during its use as a skin cosmetic or in human wound healing studies. In a 2018 review based on new genetic data, he reiterated that all biological actions associated with GHK appear to be health positive. He pointed to over four decades of GHK research encompassing cell, tissue, and animal studies, also noting the peptides inclusion in commercial anti-aging and cosmetic products such as creams, liposomes, and dermal patches [1]
Side Effects The most common side effects are gastrointestinal symptoms, injection-site reactions, mild flu-like symptoms, and transient headaches
