For skin, hair, and healing, the answer looks promising enough that GHK-Cu has stayed relevant for decades instead of disappearing like most peptide trends do
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Marys Hospital, College of Medicine, The Catholic University of Korea, Bucheon, Korea 2 Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea Corresponding author: Soo Lim
Therefore, conjugates with longer half-lives with varying therapeutic efficiency have been developed (Younus, 2018)
Anti-Aging Can you reverse-age with Glutathione