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The copper connection The "Cu" isn't incidental: copper is a required cofactor for the enzymes that cross-link collagen and elastin, and GHK's role is to carry it where it's needed.[1] That delivery job is a big part of why such a tiny peptide has such broad effects

Its skin-active properties were confirmed in a landmark 1998 study (Abdulghani et al.) in which topical GHK-Cu outperformed both vitamin C and retinoic acid in stimulating measurable collagen production

The n=16 insomnia study used IV DSIP 25 nmol/kg in the afternoon before treatment nights 35 [4]

It forms a fibrous network in the skin, along with providing the mechanical structural components of the extracellular matrix of the dermis [10, 26]

PMCID: PMC3681106

Glutathione can strengthen your immune system by helping immune cells function optimally