ghk-cu study news 2025 november Molecular crystal structure of the tripeptide GHK-Cu. In solution, GHK-Cu Therapy: Skin Rejuvenation &

C., & Farwick, M

A research vial labeled "not for human use" is not equivalent to an FDA-reviewed medication, even when the molecule name overlaps with clinical trials

doi: 10.1210/jc.2006-2203

So even the topical route, which is the evidence-backed one, should be described as supported by small, sometimes industry-affiliated human cosmetic studies with modest effect sizes, not as proven. The correct posture toward topical GHK-Cu is cautious optimism grounded in real but imperfect human data which is still a materially stronger position than the injectable route can claim

The only products that break from refrigeration are the two oral capsule formats