Copper Tripeptide (GHK-Cu) Serum, graded Preliminary-evidence on Magellan — the best controlled study found no objective benefit, only higher patient satisfaction. No numeric effect size is reported for Copper Tripeptide (GHK-Cu) Serum in Magellan's graded summary. Magellan links 21 peer-reviewed citations for Copper Tripeptide (GHK-Cu) Serum.
Source: J Biomater Sci Polym Ed 2008, PMID 18644225 ↗ · Skin & Topical Longevity · How Magellan grades evidence · Study write-up · evidence confidence: low
Copper tripeptide-1, commonly known as GHK-Cu, is a naturally occurring complex of the human tripeptide glycyl-L-histidyl-L-lysine (GHK) bound to a copper(II) ion. GHK is present in human plasma, saliva, and urine, where its concentration declines with age, and it has a high affinity for copper, forming the GHK-Cu chelate. In skin, the complex is reported to act as a signal for tissue remodeling and repair—stimulating synthesis of collagen, elastin, and glycosaminoglycans while modulating matrix metalloproteinases—and it also has antioxidant and anti-inflammatory activity.
Reviews and laboratory studies indicate GHK-Cu can stimulate collagen and elastin production, support wound healing, and reduce inflammation and oxidative stress. However, rigorous human evidence is thin: no adequate placebo-controlled trials of GHK-Cu alone for photoaging or wrinkles exist, and the best controlled human study—a randomized split-face trial after laser resurfacing—found no objective benefit over control for redness, wrinkles, or skin quality, though patients reported higher satisfaction. An irradiated-wound animal model likewise found no benefit over control. Poor skin penetration is a recognized bottleneck, and recent formulation science using liposomal encapsulation aims to improve delivery. Dermatologists generally regard it as a supportive rather than transformative anti-aging ingredient, with human cosmetic efficacy unproven. This evidence describes the GHK and GHK-Cu compound and its mechanisms, not this specific commercial serum.
Peer-reviewed studies on the active compound — citations link to PubMed.
“it tightens skin, improves elasticity and reduces fine lines and photodamage”
“GHK-Cu increases extracellular matrix accumulation in wounds through stimulation of collagen synthesis”
“In cosmetic products, it has been found to tighten loose skin and improve elasticity, skin density, and firmness, reduce fine lines and wrinkles, reduce photodamage, and hyperpigmentation, and increase keratinocyte proliferation.”
“GHK-Cu has been shown to promote skin remodeling, wound healing and regeneration, and has prominent antioxidant and anti-inflammatory effects in in vitro and in vivo studies.”
“Studies using the Broad Institute Connectivity Map show that GHK peptide modulates expression of multiple genes, resetting pathological gene expression patterns back to health.”
“The human tripeptide GHK was discovered in 1973 as an activity in human albumin that caused old human liver tissue to synthesize proteins like younger tissue.”
Research describes the active mechanism and is not a claim about this specific product.
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Yes — its active compound is linked to 21 peer-reviewed studies, summarized and cited above.
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