Ingredient · Copper-Bound Signal Peptide
Copper Peptide (GHK-Cu)
INCI · Copper Tripeptide-1
Related names and forms: GHK-Cu. This list does not indicate synonyms or exact ingredient matches.
Copper peptide (INCI: Copper Tripeptide-1; GHK-Cu) is a complex in which the glycyl-histidyl-lysine (GHK) tripeptide binds a copper ion. This is the key to reading the page: the active, characteristic part is not just the peptide, but the copper bound to it. Uncomplexed GHK and the copper complex GHK-Cu have different records. Cosmetic "Copper Tripeptide-1" means the copper complex, and the reference deliberately points to that form (PubChem CID 71587328, "Prezatide copper", C14H23CuN6O4+; confirmed with CAS 89030-95-5: the copper-containing complex, not uncomplexed GHK). It has a background in wound-healing research and is used as a signal peptide in cosmetic surface-renewal messaging; its characteristic blue colour may be visible in formulas. An important reading framework is that promising peptide, particularly copper-peptide, research signals still require measured assessment of topical cosmetic effects according to concentration, penetration and the whole formula. Laboratory and wound-model findings do not translate directly into cosmetic promises. The main peptide page covers its broader class context; this page focuses on copper-complex identity and formulation compatibility. Klaris reads formula position, combination compatibility and target profile together.
i. Cosmetic Functions
Frequently Discussed Effects
The following headings summarise areas of effect frequently discussed in the literature; visible results in each area require regular use and a suitable formula.
A Signal Peptide
It is studied in the literature for the appearance of skin surface renewal and plumpness.
A Copper Complex
Its copper-ion-bound structure distinguishes it from other cosmetic peptides.
Antioxidant Context
Copper is also described as a cofactor in some antioxidant enzyme systems.
Mechanism
What Happens Within the Skin?
The following points summarise mechanisms from dermocosmetic literature in plain English. Klaris presents them as background information to help readers understand the context, not as medical claims.
Step 1
The Copper-GHK Complex
This complex binds a copper ion to glycyl-histidyl-lysine (GHK). Its characteristic part is not just the peptide, but the copper bound to it.
Step 2
Not Uncomplexed GHK
Cosmetic "Copper Tripeptide-1" means the copper complex, different from uncomplexed GHK. The reference deliberately points to the copper-containing form.
Step 3
Signal Peptide Context
With a background in wound-healing research, it is studied for the appearance of skin surface renewal and plumpness.
Step 4
Formulation Compatibility
Its characteristic blue colour may show in formulas; simultaneous use with strong acids and high-dose direct vitamin C is assessed in context.
Step 5
A Measured Cosmetic Reading
Despite promising research signals, cosmetic effect size depends on concentration, penetration and the whole formula. Laboratory findings are not translated directly into promises.
ii. Role in the Formula
How Is It Read on a Label?
The characteristic blue colour of copper peptide may be visible in a formula. Compatibility with pH and accompanying actives, particularly strong acids and direct vitamin C, needs formulation attention; good formulas account for these combinations. It generally appears at low concentrations in serums and creams.
A Closer Look · pH, Stability, Synergy
Copper peptide (GHK-Cu) is distinctive in formulation for two reasons. First is identity: it is a copper complex, not an uncomplexed peptide. The active, characteristic component is copper bound to the peptide, so "Copper Tripeptide-1" must not be confused with uncomplexed GHK. Second is compatibility: its characteristic blue colour may be visible, and it is sensitive to pH and accompanying actives, particularly strong acids and high-dose direct vitamin C. Good formulas account for this and take care not to place copper peptide in the same layer as these strong actives. It generally appears at low concentrations in serums and creams, often 0.1% - 2% on a complex basis. The most important reading point is managing expectations. Copper peptide has a strong scientific background in wound healing and tissue repair, but this is mostly clinical or wound-model research and cannot directly become a cosmetic promise to "produce collagen or eliminate wrinkles". Topical cosmetic effects need measured interpretation based on concentration, penetration, which is debated for a large charged complex crossing the skin barrier, and the whole formula. The main peptide page covers general class distinctions between signal and carrier peptides; this page focuses on copper-complex identity, formulation compatibility and evidence context. Klaris reads formula position, combination compatibility, concentration and the whole formula together. Promising peptide research does not make a peptide name alone a result guarantee.
Typical Concentration Range
Low concentration (on a complex basis, often 0.1% - 2%)
Ingredient Family
Renewal Ingredients
iii. Sensitivity Advisory
A Note on Extra Care in Context
Simultaneous use with very strong acids or high-dose direct vitamin C is assessed in context for formula compatibility. A patch test is a measured approach to new products for sensitive profiles.
A sensitivity advisory is not an instruction for use; where individual health circumstances, pregnancy or known sensitivities are involved, discussing the decision with your doctor may be a more contextual approach.
Common Misconceptions
Frequently Confused Points
Common Belief
Copper peptide makes skin produce collagen and eliminates wrinkles.
A More Contextual Reading
Its background in wound-healing research cannot directly become a cosmetic promise to "produce collagen or eliminate wrinkles". Topical effects need measured interpretation according to concentration, penetration and the whole formula.
Common Belief
Copper peptide and uncomplexed GHK are the same.
A More Contextual Reading
The INCI "Copper Tripeptide-1" denotes GHK-Cu, a copper complex whose characteristic part is the bound copper. Uncomplexed GHK has a different record; the reference deliberately points to the copper complex.
Common Belief
As a natural wound-healing ingredient, it does the same job in every formula.
A More Contextual Reading
Copper peptide is sensitive to pH and accompanying actives such as strong acids and direct vitamin C. Effects depend on concentration and whether the formula accounts for compatibility. "Contains copper peptide" alone is not enough.
Common Belief
Strong peptide research guarantees cosmetic results.
A More Contextual Reading
Promising wound-model and laboratory findings do not translate directly into cosmetics; topical penetration and effect size are debated. The whole formula and regular use matter.
Scientific Basis
Sources and Their Scope
The following headings indicate areas of research; they are not citations of a specific publication or confirmation that every statement on this page has been verified. The links provided should be read with their individual scope in mind.
- International INCI / CosIng Database
- Dermocosmetic Research Publications
- Formulation Chemistry Guides
Source Links
Database records provide ingredient identity and registration information; on their own, they do not establish the effect of a finished product or its suitability for a profile. Search links are not specific research papers.
v. Renewal Ingredients Family
Other Ingredients in the Same Family
Explore ingredients in the same functional family to deepen your reading of formulas.
vi. Academy · Related Reading
For a Closer Look
vii. Related Concern Guides
Guides That Include This Ingredient
Klaris · Example Analyses
How Does Copper Peptide (GHK-Cu) Feature
in Your Products?
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