Those products may be inconsistent in purity and dosing, come without medical oversight, and carry unknown interactions, which is exactly the scenario a supervised plan is designed to avoid
Studies on GHK-Cu include topical skin research, diabetic wound-healing research, cell studies, animal models, and formulation studies [2], [3], [14], [15]
It works by upregulating growth factor expression, promoting angiogenesis, and modulating the nitric oxide system
First, much of this evidence comes from cell culture and animal models, not large controlled human trials so it establishes plausibility, not proof of a specific cosmetic outcome
Talk to your doctor or pharmacist if youre not sure about the maximum recommended dose for specific vitamin or mineral supplements