Syn-Coll vs GHRP-2
Side-by-side comparison of key properties, dosing, and research.
- Summary
- Syn-Coll is a palmitoylated tripeptide (Palmitoyl Tripeptide-5) that mimics thrombospondin-1 to activate TGF-beta, the primary growth factor driving collagen synthesis in the dermis. It is one of the most mechanistically direct collagen-stimulating peptides in cosmetic formulations.
- 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.
- Half-Life
- Extended (lipid depot in stratum corneum)
- 15–60 minutes
- Admin Route
- Topical
- SubQ, Intranasal
- Research
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- Typical Dose
- 0.005-0.05% in formulation
- 100–300 mcg
- Frequency
- Once or twice daily
- 2–3 times daily
- Key Benefits
- Directly activates TGF-beta for potent collagen synthesis stimulation
- Increases dermal thickness and firmness
- Reduces depth of wrinkles and fine lines
- Improves skin elasticity
- Clinically validated in collagen induction studies
- Complementary to retinoids or vitamin C
- 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
- Side Effects
- Generally well-tolerated
- Rare mild irritation at high concentrations
- Possible sensitivity in individuals with inflammatory skin conditions
- Increased appetite
- Water retention
- Elevated cortisol (modest)
- Elevated prolactin (modest)
- +2 more
- Stacks With
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