ghk-cu vs. ahk-cu
Comparative investigation of copper(II) tripeptide complexes: dermal collagen/elastin extracellular matrix remodeling vs follicular microvascular stimulation.
ghk-cu
The reference bioactive copper complex for dermal matrix research. Stimulates collagen I/III and elastin with batch-certified HPLC purity ≥ 99.0%.
ahk-cu
Analytical benchmark targeted toward hair papilla microvasculature. For full cutaneous matrix protocols we recommend in-stock GHK-Cu.
Comparative data from landmark clinical trials (NEJM).
Copper(II) Complexes: Dermal Fibroblasts vs. Hair Papilla
GHK-Cu
GHK-Cu is a natural chelated complex of glycyl-L-histidyl-L-lysine with divalent copper Cu2+. It acts as a master transcriptional regulator in fibroblasts, resetting the expression of over 4,000 genes associated with collagen, elastin, proteoglycan synthesis, and Cu/Zn-SOD antioxidant defense.
AHK-Cu
AHK-Cu substitutes the N-terminal glycine with L-alanine (Ala-His-Lys:Cu2+), yielding a spatial conformation that preferentially targets dermal papilla cells in the hair follicle, markedly upregulating local vascular endothelial growth factor (VEGF) to extend the anagen growth phase in research models.
Preclinical Extracellular Matrix & Trichological Evidence
GHK-Cu Clinical Efficacy
In human dermal fibroblast cultures, GHK-Cu produced over a 70% surge in procollagen type I synthesis along with balanced modulation of MMP-1 and MMP-2 metalloproteinases to clear abnormal scarred tissue.
AHK-Cu Clinical Efficacy
In ex-vivo follicular assays, AHK-Cu demonstrated significant inhibition of dermal papilla apoptotic pathways alongside enhanced peri-follicular microcirculation driven by VEGF.
Formulation, Crystalline Blue Hue & Chelation Stability
Both peptides present an intense sapphire-blue hue reflecting the Cu2+ ion coordinated to the histidine imidazole ring. To preserve chelate bond integrity, reconstitute aseptically with bacteriostatic water at neutral pH (6.5–7.2) avoiding competitive chelating agents such as EDTA.
Pharmacological and analytical specifications.
| PARAMETER | GHK-CU (COBRE TRIPEPTIDO-1) | AHK-CU (ALANIL-HISTIDIL-LISINA) |
|---|---|---|
| Peptide Sequence & Chelation | Gly-His-Lys:Cu2+ (Glicil-L-histidil-L-lisina) | Ala-His-Lys:Cu2+ (L-alanil-L-histidil-L-lisina) |
| Primary Biological Target | Dermal fibroblasts and extracellular matrix (ECM) | Hair follicle dermal papilla cells & microvasculature |
| Collagen I, III & Elastin Upregulation | Strong stimulation of collagen I & III (+70% vs control) | Moderate stimulation focused on follicular anchoring |
| VEGF & Follicular Growth Factor Induction | Balanced upregulation in cutaneous healing | Marked VEGF overexpression in follicular papilla |
| MMP Matrix Metalloproteinase Regulation | Optimal balance: breaks down aberrant scarred collagen | Limited effect on scar extracellular remodeling |
| HPLC Purity Standard | ≥ 99.0% (Liofilizado analítico verificado por lote) | ≥ 99.0% (Estándar analítico de referencia) |
| Availability & Dispatch | In stock in Spain · Express 24-72h EU shipping (no customs) | Analytical research reference benchmark |
ready to order your compound?
All peptides are supplied in vacuum-sealed lyophilized vials with >99% HPLC purity, certified by independent Mass Spectrometry. Dispatched directly from Spain with zero customs delays across Europe.
ghk-cu
Lyophilized vials with verified HPLC purity ≥ 99.0%.
ahk-cu
Lyophilized 10mg and 20mg vials with verified HPLC purity ≥ 99.4%.
Frequently asked questions about GHK-Cu vs. AHK-Cu.
Molecular differences, receptor binding profiles, clinical trial benchmarks, reconstitution guidelines, and legal status for laboratory research across Europe.
GHK-Cu is the gold standard for full dermal regeneration, driving collagen, elastin, and skin remodeling. AHK-Cu features an alanine substitution tailored specifically toward hair follicle papilla viability and microvascular stimulation.
Yes. IberiaLabs provides verified lyophilized GHK-Cu (≥ 99.0% HPLC purity) in 50mg and 100mg vials with 24–72h express delivery across the EU.