Read the Research

Most skincare actives that get marketed as "backed by science" have a handful of supporting studies, often from the last five or ten years. GHK-Cu is a diffe...

GHK-Cu gets discussed mostly in terms of collagen and tissue remodelling, covered in depth in our other articles. That's one real pillar of its mechanism, bu...

Most cosmetic ingredients never go through independent, adversarial scrutiny at all; the industry's honesty problem is usually unverified marketing claims la...

"GHK-Cu resets the expression of over 4,000 human genes toward a youthful pattern" is one of the most repeated claims in longevity and biohacking content abo...

A specific, precise-sounding claim circulates widely in peptide research communities: subcutaneous GHK-Cu delivers 50-100x greater bioavailability than topic...

"Don't use copper peptides and vitamin C together" is one of the most repeated rules in skincare. Unlike some of the citation problems we've caught elsewhere...

Search for GHK-Cu and dark circles, and you'll find the same claim repeated across dozens of skincare sites: a "1998 study" in which GHK-Cu eye cream, tested...

GHK-Cu is frequently recommended for stretch marks online, often alongside a specific "2009 clinical study" that gets cited across marketing blogs. We looked...

GHK-Cu and microneedling are marketed together constantly, and the pitch is almost always the same: microneedling opens the skin, GHK-Cu rushes in, results a...

Most consumer content about GHK-Cu frames it almost entirely as an anti-aging ingredient, fine lines, firmness, elasticity. That's a fair summary of what mos...