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This suggests that excessive GHK-Cu (or other copper peptides) might theoretically push skin MMP-1 concentrations beyond levels supporting healthy collagen production into ranges associated with collagen fragmentation and breakdown seen in older skin with naturally elevated MMP-1

The mechanisms underlying enhanced longevity in these mouse populations are multiple and complex

BPC-157 is a research-stage peptide without extensive human clinical trials

I was skeptical at first since I had never used peptides before

Shampoo first to cleanse the scalp, then conditioner on the mid-lengths and ends, then GHK-Cu Hair Serum onto the clean scalp as the leave-on step