GHK-Cu (Raw)

GHK-Cu (Raw) is sold as a raw cosmetic material — you formulate it into a serum or cream yourself rather than buying it finished. What follows is what the molecule does, whether it survives the trip through skin, and how to handle it.

Does GHK-Cu (inj/oral) actually work on skin?

This is a different question from whether it works injected, and the answer is often different too — a molecule has to survive the stratum corneum before any of its biology matters. Full GHK-Cu (inj/oral) breakdown →

Human clinical evidence

• The best-evidenced peptide in this section for topical use, and unusually it is evidenced as a topical specifically rather than borrowed from injection studies. Controlled work reports increased collagen and elastin, improved skin firmness and reduced fine lines over 12 weeks in facial creams, and improved wound closure in dermatology settings.

Correlative data

• Decades of use in cosmetic dermatology, and one of very few peptides that survived from prescription wound care into ordinary skincare on the strength of results rather than marketing.
• Scalp use for density is widespread and reported experience is positive but slow — months, not weeks — and far less dramatic than minoxidil.

How the mechanism reads

• A copper-binding tripeptide (glycyl-L-histidyl-L-lysine) at about 340 Da — small enough to actually cross the stratum corneum, which is why it works topically when larger peptides do not. It upregulates collagen I, III and IV and elastin, signals metalloproteinase remodelling, and delivers copper as a cofactor for lysyl oxidase, the enzyme that cross-links collagen.
• The copper is the caveat. It is what makes it work and also what makes it stain, oxidise and interact badly with direct vitamin C in the same layer. Separate them by routine, AM and PM.

How to use GHK-Cu (Raw)

This is a raw active, not a finished product: you are buying the ingredient to formulate with. It needs a vehicle, a sensible concentration and a pH that suits the molecule before it does anything at all. Keep it out of the same layer as direct vitamin C — copper and ascorbic acid deactivate each other. Vitamin C in the morning, copper peptides at night, and both keep working. What working looks like: firmness and texture at 8-12 weeks on the face; scalp density is months, not weeks.

What not to layer with GHK-Cu (Raw)

• GHK-Cu (inj/oral) + Vitamin C — Copper peptides and direct (L-ascorbic) vitamin C deactivate each other. Not dangerous — just wasteful. Split them: vitamin C in the morning, copper peptide at night.

Where to get GHK-Cu (Raw)

Other GHK-Cu (inj/oral) products in the Vault

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