GHK-Cu + hyaluronic acid synergy (PMID: 37062921): A 2023 study in J Cosmetic Dermatology demonstrated that GHK-Cu combined with hyaluronic acid promoted generation of collagen I, IV, and VII, with synergistic effects on collagen IV production (25.4x increase in cell tests, 2.03x in ex-vivo skin tests)
SOD, Superoxide dismutase
Participants Twelve women between the ages of 39 and 76 years with a mean age of 58.3 years participated in this trial at a private clinic
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