PurePeptides™ Research Library
GHK-CU: ANALYTICAL
GHK-CU: ANALYTICAL
BIO-OPTIMIZATION
An evidence-aware review of published peptide research. Study findings are separated from product-specific claims, and GHK-Cu is used here as a scientific term—not as a claim of exclusive ownership.
Study Design Snapshot Cited 2025 Paper
Counts and duration are shown only as a protocol snapshot: 31 participants, seven peptide components, 56 days and one uncontrolled clinical arm.
Reported 56-Day Outcomes Within-Participant Change
Absolute percentages reported for the tested seven-peptide–silybin cream. These results do not establish efficacy for GHK-Cu or any catalogue item on this site.
Evidence Note • 10 October 2025
What the cited study actually examined
Zhang and colleagues evaluated a cosmetic cream combining seven peptide ingredients with silybin. The work included cultured human skin cells, UV-damaged human skin explants and a 56-day clinical evaluation in 31 women aged 32–59 who applied the cream twice daily.
Reported findings
The authors reported changes in extracellular-matrix markers in cell and explant models and within-participant improvements after 56 days in measured elasticity, firmness, dermal density, pores and several wrinkle parameters.
Important limits
The clinical arm was small, female-only and lacked a placebo or vehicle control. All authors were employees of the company that provided the cream. The formulation did not contain GHK-Cu, so its results cannot substantiate GHK-Cu products or treatment claims.
Citation: Zhang H, Hu H, Xu C, et al. Anti-Aging Efficacy of a Multi-Peptides–Silybin Complex: Mechanistic Insights and a 56-Day Clinical Evaluation. Cosmetics. 2025;12(5):223. This independent summary does not reproduce the paper’s figures and is not medical advice.
Read the paper ↗Assortment Navigator
Prototype catalogue entries only. Composition, batch identity, quality, availability and lawful intended use require product-specific verification before publication or supply.
Statutory Disclosure & Terms
1.0 Jurisdictional Competence
All transactions, agreements, and disputes arising from the use of this interface are governed by the laws of the State of Victoria, Australia. Users acknowledge the exclusive jurisdiction of the Courts of Victoria and the Victorian Civil and Administrative Tribunal (VCAT).
2.0 Statutory Guarantees (ACL)
Pursuant to Schedule 2 of the Competition and Consumer Act 2010 (Cth), known as the Australian Consumer Law (ACL), applicable consumer guarantees cannot be excluded.
3.0 Trade Mark Notice
PurePeptides™ is used as an unregistered brand. The ™ symbol does not indicate registration. GHK-Cu and Copper Tripeptide-1 are scientific or descriptive terms, and no exclusive rights are claimed in those terms.
4.0 Evidence Boundary
The cited 2025 paper examined a seven-peptide–silybin cream, not GHK-Cu or any catalogue entry shown here. Published findings must not be presented as product-specific substantiation without direct, retained evidence.
5.0 Regulatory Status
Regulatory status is determined by each product’s composition, presentation, claims and intended use—not by a website disclaimer. Nothing shown here should be supplied or advertised until its classification and applicable Australian requirements have been verified.
6.0 Copyright & Sources
Original site text, layout and code are protected to the extent provided by law. Third-party research remains the property of its respective rights holders and is cited rather than claimed as proprietary content.