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For a balanced Matrixyl vs GHK-Cu assessment, the depth and breadth of GHK-Cus peer-reviewed evidence significantly exceeds the cosmetic literature available for Matrixyl

Dismissing cerebrolysin for stroke based solely on CASTA ignores the broader evidence context

But there's a lot of important and quite simple biology to understand before anyone should even be thinking about any of that

This guide is a deep dive into what GHK-Cu is, what the science actually supports, who it's for, how we prescribe it in our Lincoln Park clinic, and how to decide whether it's the right next step for your skin, your hair, or your broader longevity plan