Ingredient or product comparison
Peptide Protocol Comparison: Formulation Variables
Signal Peptides (Matrixyl, Syn-Coll) 3–8% 4.5–6.0 Liposomal encapsulation or cyclodextrin Bind TGF-beta receptors on fibroblasts to upregulate collagen I/III synthesis Gold standard for collagen induction. Clinical trial support is strongest for this class Car
This source-based comparison does not add ratings or recommend a winner.
- Signal Peptides (Matrixyl, Syn-Coll)
- 3–8%
- 4.5–6.0
- Liposomal encapsulation or cyclodextrin
- Bind TGF-beta receptors on fibroblasts to upregulate collagen I/III synthesis
- Gold standard for collagen induction. Clinical trial support is strongest for this class
- Carrier Peptides (GHK-Cu)
- 1–3%
- 5.0–6.5
- Dimethyl isosorbide or propylene glycol
- Deliver copper ions to activate lysyl oxidase for collagen cross-linking
- Synergistic with signal peptides. Copper also has direct anti-inflammatory effects on dermal tissue
- Neurotransmitter Inhibitors (Argireline)
- 5–10%
- 5.5–6.5
- Cyclodextrin complexing
- Block acetylcholine release to reduce expression line depth
- Effective for dynamic wrinkles only. Zero effect on photodamage or static lines
- Enzyme Inhibitors (Tripeptide-1)
- 2–5%
- Liposomal delivery
- Inhibit collagenase and elastase to prevent matrix degradation
- Preventive rather than regenerative. Pair with signal peptides for dual action