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GHK-Cu has been shown in cell culture to increase dermal papilla cell proliferation and protect these cells from programmed cell death (apoptosis), shifting the Bcl-2/Bax survival balance in favor of cell protection
The two retailers a researcher can actually order from, Koi and Core, sit at opposite ends on documentation, while the three makers with the longest standing sell only to businesses or institutions
Evidence source : NEJM (2023 Phase 2), Novo Nordisk trials (NCT04982530)
However, unlike these peptides, PRP has been studied extensively in humans and has a strong safety profile overall, although its not risk-free
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