Copper peptides have built up quite a following, both in skincare circles and in the lab. GHK-Cu is the one you’ll hear about most, usually alongside claims about firmer, smoother or younger-looking skin. But a compound being interesting doesn’t mean every product containing it works the same way, or works at all. If you’re researching ghk cu, start with three things: what the compound actually is, what the evidence behind the common claims looks like, and the gap between what a product is marketed for and what it’s been shown to do. That gap matters most with peptides sold for…
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