Kulkarni K, Kelderman J, Coleman H, Aguilar M-I, Parkington H, Del Borgo M
Side Effects and the Copper Uglies Explained GHK-Cu has a strong safety profile in topical research, but a small subset of users experience a transient phase known as the copper uglies. A 2023 clinical safety review covering 12 studies and 512 participants reported that the most common side effects of topical GHK-Cu were transient and mild
Gut 18:713716, 1977 Papp M: Pancreatic cytoprotection: new approaches
Collagen and Elastin Stimulation GHK-Cu activates genes responsible for extracellular matrix synthesis while simultaneously suppressing those involved in matrix degradation
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