0.3 ghk cu serum GHK-Cu Organic acne scars GHK-Cu Copper Peptides Face Serum:

Inhibitory neurotransmission in rat spinal cord: co-localization of glycine- and GABAA-receptors at GABAergic synaptic contacts demonstrated by triple immunofluorescence staining

That is a fair conclusion, and it is more common than the marketing around copper peptides suggests

When cAMP binds to the regulatory subunits, their conformation is altered, causing the dissociation of the regulatory subunits, which activates protein kinase A and allows further biological effects

So Where Does GHK-Cu Stand

Ice crystals that form during freezing physically shear peptide bonds, similar to the damage caused by vigorous shaking