Ingredient or product comparison
GHK-Cu for Receding Hairline Research: Comparison of Delivery Methods
Topical (liposomal carrier) 1% Once or twice daily 15–18% over 16–24 weeks Non-invasive, easy self-administration, consistent dosing Best first-line option for diffuse thinning; requires sustained compliance Intradermal injection (mesotherapy) 0.5–1% Every 4–6
This source-based comparison does not add ratings or recommend a winner.
- Topical (liposomal carrier)
- 1%
- Once or twice daily
- 15–18% over 16–24 weeks
- Non-invasive, easy self-administration, consistent dosing
- Best first-line option for diffuse thinning; requires sustained compliance
- Intradermal injection (mesotherapy)
- 0.5–1%
- Every 4–6 weeks
- 24–29% over 12 sessions
- Higher local concentration, bypasses stratum corneum barrier
- Most effective for localized recession; requires clinical administration
- Microneedling + topical
- 1–2%
- Weekly or biweekly
- 28–31% over 12–16 weeks
- Mechanical activation of wound healing plus enhanced penetration
- Combines injury-induced growth signals with peptide delivery; moderate complexity
- Subcutaneous injection (research models)
- 0.1–0.5%
- Variable (experimental)
- Data from animal models only. No human trials
- Direct dermal delivery without surface application
- Not yet validated in human scalp tissue; included for completeness