Your blood carries a peptide made of just three amino acids that grabs copper and takes it where tissue needs repairing. At 20 there is plenty of it. By 60, levels have fallen to well under half, at roughly the age when skin heals more slowly, thins and loses its spring.
That peptide is GHK-Cu, and it has moved from research papers onto serum labels and into peptide clinics. This guide explains what it is, what it does in skin and hair, what the human evidence shows, the difference between creams and injections, and how we use it at Alpha Medical in Limassol.
What GHK-Cu is
GHK (glycyl-histidyl-lysine) was first found in human plasma in the 1970s. It binds copper very tightly, and the copper complex, GHK-Cu, is the active form. It is released where tissue is damaged and acts as a signal for repair.
According to research summarised by the scientists who discovered it, plasma levels average about 200 ng/mL at age 20 and around 80 ng/mL by age 60. That decline is one of the reasons it has become interesting for ageing skin.
What it does in skin
In laboratory and animal studies GHK-Cu increases production of collagen, elastin and the water-holding molecules of the skin, supports wound healing, and has antioxidant and anti-inflammatory effects. Gene-expression data reviewed in 2018 showed it shifts the activity of thousands of human genes, many involved in tissue repair, in a direction associated with healthier tissue.
In people, small controlled studies of copper peptide creams applied for about 12 weeks found improvements in firmness, fine lines and skin clarity. Those studies are modest in size, and the effects are gradual rather than dramatic.
- Firmer skin through more collagen and elastin
- Smoother texture and fewer fine lines
- Calmer, better-healing skin after procedures
- A more even, brighter tone
What about hair?
GHK-Cu is often added to hair serums because laboratory studies show it can enlarge hair follicles and support the cells around them. The human evidence for hair is thinner than for skin. We see it as a supporting player in a hair plan alongside treatments with stronger evidence, such as PRP, rather than a treatment on its own.
Creams, microneedling or injections?
GHK-Cu is a small peptide, but intact skin still limits how much a cream delivers. Serums are the gentlest way to use it and suit daily maintenance. Applied straight after microneedling, it reaches the deeper skin through the tiny channels, which is how we most often use it in the clinic.
Small injections under the skin deliver it to the whole body rather than one area. This is how it is used in peptide protocols for skin quality, often combined with other peptides for collagen and recovery. Your physician chooses the route based on what you want to change.
Who it suits
GHK-Cu suits people from their thirties onward who want to support skin quality, those recovering from resurfacing, and patients already doing regenerative treatments such as PDRN or polynucleotides who want an extra repair signal. Mild redness or tingling where it is applied is the usual side effect. We avoid it in pregnancy and breastfeeding, and in anyone with a copper metabolism disorder such as Wilson's disease.
GHK-Cu at Alpha Medical
Your physician starts with a consultation and a skin assessment, and, for injected protocols, bloodwork. We then decide whether GHK-Cu fits as a serum, during microneedling, as part of a peptide protocol, or not at all.
Patients who want ongoing skin support can join our Collagen Stimulation peptide plan, part of our peptide memberships, which includes physician follow-up. Patients travel to our Limassol clinic from Nicosia, Larnaca and Paphos, and many pair GHK-Cu with a skin booster or PDRN course.
Ready to take the next step? Book a consultation at our contact page — or request an introductory Peptide Therapy guide below.
