Nonapeptide-1 vs Ipamorelin
Side-by-side comparison of key properties, dosing, and research.
Skin & Cosmetic
Nonapeptide-1Growth Hormone Peptides
Ipamorelin- Summary
- Nonapeptide-1 is a synthetic 9-amino acid peptide that inhibits melanin production by blocking α-MSH (alpha-melanocyte stimulating hormone) receptor binding. Used in cosmetic formulations for skin lightening and evening skin tone, it is particularly effective for UV-induced and hormonal hyperpigmentation.
- Ipamorelin is a selective GHRP (growth hormone releasing peptide) and one of the cleanest GH secretagogues available. It selectively stimulates GH release without significantly raising cortisol, prolactin, or appetite — making it ideal for long-term use and anti-aging protocols.
- Half-Life
- Not applicable (topical)
- 2 hours
- Admin Route
- Topical
- SubQ
- Research
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- Typical Dose
- 0.05–0.5% concentration in formulation
- 100–300 mcg
- Frequency
- Twice daily
- Once to twice daily
- Key Benefits
- Inhibits UV-induced tanning and hyperpigmentation
- Reduces hormonal melasma
- Evens skin tone at receptor level
- Well-tolerated with minimal irritation
- Complementary to tyrosinase inhibitors for enhanced brightening
- Reduces post-inflammatory hyperpigmentation
- Increases lean muscle mass
- Enhances fat loss
- Improves recovery time
- Strengthens bones and joints
- Better sleep quality and REM sleep
- Enhanced skin elasticity
- Minimal impact on hunger or cortisol
- No cortisol or prolactin spike
- Clean GH release suitable for long-term protocols
- Side Effects
- Generally very well-tolerated
- Rare contact sensitivity in susceptible individuals
- Theoretical risk of excessive depigmentation with prolonged high-concentration use
- Injection site irritation
- Temporary water retention (mild)
- Possible hunger increase (milder than GHRP-6)
- Numbness or tingling in extremities (rare)
- Stacks With
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