ghk-cu peptide structure RCSB PDB GHK-Cu for Skin Longevity: The
Description
Aside from direct effects on principal neurons, a second, hypothesized mechanism for ketamines antidepressant effect is an indirect impact on principal excitatory neurons via inhibition of fast spiking PV-positive interneurons resulting in cortical disinhibition [171,172,173]

Others think it is a marketing gimmick

& Helleday, T
In contrast, low levels of acetylation confer astrocytic differentiation potential, while intermediate histone acetylation levels support oligodendrocytic fate 5,6

The proliferation claim is oversold If the marketing has a favorite move, its hinting that GHK-Cu makes skin cells multiply
