Compare Peptides
Select any two compounds for a side-by-side comparison of mechanism, uses, risks, and FDA regulatory status.
Popular comparisons
A lipopeptide used in topical skincare that stimulates collagen and fibronectin production in the skin. One of the most studied cosmetic peptides, marketed as Matrixyl. Works by mimicking a collagen fragment that signals fibroblasts to produce new collagen matrix. Widely used in anti-aging serums and creams.
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.
The KTTKS sequence mimics a collagen breakdown fragment (matrikine) that signals fibroblasts to initiate new collagen synthesis. The palmitoyl group enhances skin penetration by increasing lipophilicity. Stimulates production of collagen types I, III, and IV, as well as fibronectin and glycosaminoglycans.
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.
- Anti-wrinkle topical treatment
- Collagen stimulation in aging skin
- Skin firmness and elasticity improvement
- Post-procedure skin recovery
- Cosmeceutical formulations
- Anti-wrinkle skincare
- Expression line reduction
- Forehead and crow's feet treatment
- Anti-aging cosmetic formulations
- Generally well-tolerated topically
- Mild skin irritation in sensitive individuals
- Efficacy depends on formulation and concentration
- Not effective via injection — topical only
- Results require consistent use over weeks
- 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
Not regulated as a drug by the FDA. Classified as a cosmetic ingredient. No prescription required. Available in over-the-counter skincare products. No FDA review process for cosmetic peptides.
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.