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As we age, our natural levels of GHK-Cu decline significantly, which can lead to a plateau in skin resilience and hair density
According to a 2012 study on a serum containing barley bioengineered epidermal growth factor, "clinical evaluations showed statistically significant improvement in the appearance of fine lines and rhytids, skin texture, pore size , and various dyschromatic conditions apparent within the first month of use, and continuing improvement trends for the duration of the study" (which was 3 months)
[DOI] [PMC free article] [PubMed] [Google Scholar] 24.Norgaard C.H., Friedrich S., Hansen C.T., Gerds T., Ballard C., Moller D.V., Knudsen L.B., Kvist K., Zinman B., Holm E., et al
After 12-hour incubation, cell lysates were collected for analysis
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