GHK-Cu
Also known as: Copper Peptide, Glycyl-L-histidyl-L-lysine copper complex, GHK-Cu2+
Overview
GHK-Cu is a naturally occurring tripeptide copper complex (glycyl-L-histidyl-L-lysine) first identified in human plasma in the 1970s. It functions as one of the most potent gene regulators among known peptides, influencing the activity of over 4,000 human genes. GHK-Cu levels decline by more than 60% between early adulthood and age 60, correlating with visible skin aging and reduced tissue repair capacity. It is extensively studied in dermatology, wound healing, and systemic anti-aging applications.
Mechanism of Action
GHK-Cu operates through multiple mechanisms: (1) gene regulation - large-scale profiling studies indicate modulation of 4,000+ genes, reactivating tissue repair genes while suppressing inflammatory and destructive pathways; (2) fibroblast stimulation - drives collagen, elastin, dermatan sulfate, and chondroitin sulfate synthesis; (3) MMP modulation - balances collagen remodeling through controlled metalloproteinase activity; (4) precision copper delivery - transports bioavailable copper to cells while suppressing free radical formation from ionic copper; (5) angiogenesis promotion; (6) anti-inflammatory activity reducing IL-6 and TNF-alpha.
Potential Benefits
- Statistically significant improvements in skin firmness and elasticity
- Reduction in fine lines and wrinkle depth over 3-6 months
- Accelerated wound healing and scar reduction
- Collagen and elastin production stimulation
- Improved skin density and moisture retention
- Hair follicle enlargement and growth stimulation
- Anti-inflammatory and antioxidant activity
- Gene expression 'reset' toward more youthful cellular programming
Dosage Protocols
The following reflects doses used in published research studies. This is not medical advice. Consult a qualified healthcare professional.
| Typical Range | 1-2 mg/day injectable; topical concentrations 0.1-2% |
| Beginner | 0.5-1 mg/day subcutaneously or topically |
| Intermediate | 1-2 mg/day subcutaneously |
| Advanced | 2-3 mg/day; combine injectable and topical formulations |
| Cycle Duration | 4-12 weeks injectable; topical can be used indefinitely |
| Cycle Off | 4-6 weeks off injectable; topical use can be continuous |
Injectable GHK-Cu is used for systemic anti-aging and wound healing. Topical formulations are well-established for skin rejuvenation and hair loss. Topical bioavailability enhanced with iontophoresis or microneedling.
Use our Reconstitution Calculator to determine exact syringe units for your protocol.
Routes of Administration
Subcutaneous Injection High
Systemic anti-aging, wound healing, and collagen stimulation effects
Topical Low
Effective for local skin rejuvenation, wrinkle reduction, and hair loss; penetration enhanced by appropriate formulation base
Intramuscular Injection High
Less common; used for deeper tissue targeting in some protocols
Read our full Routes of Administration Guide for detailed comparison of all delivery methods.
Stacking Protocols
Popular research stacks involving GHK-Cu:
Skin Rejuvenation Stack
Comprehensive anti-aging at cellular and tissue level
GHK-Cu stimulates collagen; Epithalon targets telomere maintenance; NAD+ addresses mitochondrial aging. A well-rounded longevity protocol.
Wound Healing Stack
Maximum tissue repair acceleration
GHK-Cu contributes collagen remodeling and TGF-β regulation while BPC-157 and TB-500 drive vascular and cellular repair mechanisms.
Hair Restoration Stack
Hair follicle stimulation and scalp inflammation control
Topical application; GHK-Cu activates follicle cycling and extends anagen phase; KPV reduces scalp inflammation.
Explore our complete Peptide Stacking Guide for more combinations and safety considerations.
Reconstitution
| Typical Vial Size | 50mg/100mg (topical powder), 2mg/5mg (injectable) |
|---|---|
| BAC Water | 1-2ml per 2mg injectable vial |
| Storage | Refrigerate reconstituted injectable at 2-8°C; topical formulations at room temperature |
| Shelf Life | 28 days refrigerated (injectable); 6-12 months (topical formulations) |
Need exact syringe measurements?
Amino Acid Sequence
Gly-His-Lys (complexed with Cu2+ ion)
Side Effects & Safety
- Generally excellent topical safety profile
- Potential skin darkening with repeated use
- Rare allergic contact dermatitis
- Injection site reactions with parenteral use
Synergistic Compounds
The following compounds have been studied alongside GHK-Cu for potential complementary or synergistic effects:
Learn More
References & Further Reading
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