INDIVIDUAL PEPTIDES
Copper Tripeptide-1, often called GHK-Cu, is a copper complex of the Gly-His-Lys tripeptide. For a cosmetic formulation brief, establish the supplied form and active-content basis first, then review the intended serum or cream and its compatibility requirements.
On this page Overview Identity Review Questions Enquire →
- Catalogue reference
- KI-041
- Product family
- Individual peptides
- CAS reference
- 89030-95-5
- Public INCI identity reference
- Copper Tripeptide-1
The public overview identifies the catalogue material. Confirm the supplied grade, full composition and current batch specifications in the supplier documents.
Development directions
Lines & texture · Firmness & age care
Possible formulation formats
- Daily facial serum
- Night cream
- Targeted line-care concentrate
- Facial firming serum
These are development concepts for discussion. Ingredient selection does not establish the performance or suitability of a finished product.
Identity and supplied form
The public identity reference for Copper Tripeptide-1 (GHK-Cu) is CAS 89030-95-5, as listed in CIR’s ingredient identity table. The free Gly-His-Lys tripeptide (GHK) is a different identity; its 49557-75-7 reference should not be used to identify the copper complex.
Formulation review priorities
| Review point | What to establish |
|---|---|
| Identity and supplied form | Match the product name and CAS to the actual offer. Establish whether the material is a powder or a solution and request the full declaration for that supplied form. |
| Assay and concentration basis | Request the analytical method, purity or assay basis and relevant batch COA. For a solution, establish peptide concentration, carrier and any preservative system. |
| Formulation evaluation | Share the intended pH, chelators, co-actives and process with the supplier. Set a formula-specific use level and stability plan from current material guidance. |
Public reference sources
CIR ingredient identity table, 2014 →
Sigma-Aldrich free GHK identity →
Reference review: 18 October 2026. Public descriptions support identity and formulation discussions; confirm the documents for the exact offered material.
Questions for your brief
- Are you evaluating an individual Copper Tripeptide-1 material or a supplied solution, and what active-content basis do you need?
- What final pH, co-active ingredients, chelating agents and process conditions will the material encounter?
- What quantity, destination and identity, assay and batch documents are needed to compare the offer?
Are GHK and GHK-Cu interchangeable catalogue identities?
No. GHK is the free Gly-His-Lys tripeptide; GHK-Cu refers to a copper complex. Check the name and CAS on the offer and its documents rather than substituting one reference for the other.
Can the same use percentage be applied to a powder and a solution?
Not without their active-content basis. A supplied solution percentage and an individual ingredient assay describe different things. Establish concentration and composition before calculating the level in a prototype.
Make your next enquiry specific.
Include the product identity, target market, formulation format, quantity and the documents needed for your review.