Format Comparison
GHK-Cu Topical vs Injection: Format Comparison
GHK-Cu works through both topical and injected routes but the targets differ. Topical suits dermal and hair goals, injection is studied for systemic wound and tissue remodelling.
Side-by-side comparison
| Attribute | GHK-Cu (Topical) | GHK-Cu (Subcutaneous) |
|---|---|---|
| Target tissue | Skin, hair, scalp | Systemic wound, tendon, connective tissue |
| Form | Serum, cream, sometimes microneedled | Reconstituted vial, syringe |
| Onset of visible effects | 4 to 12 weeks (skin) | Faster systemic markers, weeks for visible repair |
| tolerability profile in study models | Mild irritation, copper colour at high dose | Injection site reaction, occasional flushing |
Key differences
- ·Topical reaches dermis and hair follicles without systemic exposure
- ·Subcutaneous delivers systemic copper peptide for deeper wound or fibrosis research
- ·Topical typical concentration 0.05 to 0.2 percent in serum or cream
- ·Injectable doses range 1 to 2 mg subcutaneously in study designs
Research summary
Pickart and Margolina (2018) reviewed GHK-Cu mechanisms covering antioxidant, anti-inflammatory, and matrix remodelling pathways. Topical studies focus on photoageing and hair density. Injected studies cover skin repair and fibrotic tissue.