GHRP-2 vs Matrixyl
Side-by-side comparison of key properties, dosing, and research.
- Summary
- GHRP-2 is a potent synthetic hexapeptide that stimulates growth hormone release by activating ghrelin receptors in the pituitary and hypothalamus. It produces one of the strongest GH pulses among GHRPs, though unlike Ipamorelin it does cause modest increases in cortisol and prolactin.
- Matrixyl is the most widely used collagen-stimulating cosmetic peptide. As a matrikine — a fragment of type I procollagen — it signals skin cells to synthesize new collagen, elastin, and fibronectin, reducing wrinkle depth and improving skin firmness and elasticity.
- Half-Life
- 15–60 minutes
- N/A — topical; sustained signaling effects on fibroblasts persist beyond single application
- Admin Route
- SubQ, Intranasal
- Topical
- Research
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- Typical Dose
- 100–300 mcg
- 3–8% concentration
- Frequency
- 2–3 times daily
- Once or twice daily
- Key Benefits
- Strong GH pulse stimulation
- Increased IGF-1 levels
- Enhanced muscle growth and recovery
- Improved fat metabolism
- Better sleep quality
- Increased bone density
- Enhanced appetite (less pronounced than GHRP-6)
- Anti-aging effects via GH axis optimization
- Stimulates collagen I, III, and IV synthesis
- Increases fibronectin and glycosaminoglycan production
- Reduces wrinkle depth and length by 27–68% (studies)
- Improves skin firmness and elasticity
- Reduces dark circles and undereye bags
- Synergistic with retinol, vitamin C, and growth factors
- Suitable for all skin types including sensitive
- Well-studied with published clinical data
- Side Effects
- Increased appetite
- Water retention
- Elevated cortisol (modest)
- Elevated prolactin (modest)
- +2 more
- Exceptional safety profile
- Non-irritating, suitable for sensitive skin
- No known adverse effects at cosmetic concentrations
- Stacks With
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