Compare Peptides
Select any two compounds for a side-by-side comparison of mechanism, uses, risks, and FDA regulatory status.
Popular comparisons
A newer copper-binding tripeptide related to GHK-Cu but with a different amino acid sequence (Ala-His-Lys vs Gly-His-Lys). Emerging research suggests it may have distinct and potentially complementary effects on hair growth and skin rejuvenation.
A cosmetic peptide that mimics the N-terminal end of SNAP-25, a protein involved in neuromuscular signaling. By competing with SNAP-25 for a position in the SNARE complex, it reduces the intensity of muscle contractions that cause expression lines. Often called 'topical Botox' in the skincare industry, though its effects are much milder than injectable neurotoxins.
Binds copper ions similarly to GHK-Cu but activates different signaling pathways. Appears to stimulate Wnt/β-catenin signaling in hair follicle dermal papilla cells, promoting hair growth through a mechanism distinct from GHK-Cu's wound healing pathway.
Competes with natural SNAP-25 for binding in the SNARE complex, which is required for neurotransmitter release at the neuromuscular junction. By partially inhibiting SNARE complex formation, it reduces acetylcholine release and softens muscle contractions that create wrinkles. Works topically — no injection required.
- Hair growth stimulation
- Skin rejuvenation
- Anti-aging
- Wound healing support
- Anti-wrinkle skincare
- Expression line reduction
- Forehead and crow's feet treatment
- Anti-aging cosmetic formulations
- Very limited research compared to GHK-Cu
- Most studies are in vitro
- Potential copper toxicity at high doses
- Not well-characterized safety profile
- Mild skin irritation in sensitive individuals
- Effects are subtle compared to injectable treatments
- Efficacy varies significantly between formulations
- Not a replacement for Botox or dermal fillers
No FDA regulatory category. Available as a research chemical and in some cosmetic formulations. Not subject to the same regulatory scrutiny as GHK-Cu injectable.
Not FDA-regulated as a drug. Classified as a cosmetic ingredient. Widely used in over-the-counter skincare products globally. No prescription required. Regulated under cosmetic ingredient safety standards rather than pharmaceutical standards.
This comparison is for educational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional before starting any peptide therapy.