Tetracosactide vs Matrixyl Synthe'6
Head-to-head comparison of Tetracosactide (Tetracosactide (ACTH 1-24, Cosyntropin)) and Matrixyl Synthe'6 (Palmitoyl Tripeptide-38) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Tetracosactide | Matrixyl Synthe'6 |
|---|---|---|
| Category | Skin & Cosmetic | Skin & Cosmetic |
| Full Name | Tetracosactide (ACTH 1-24, Cosyntropin) | Palmitoyl Tripeptide-38 |
| Molecular Weight | 2933 Da | 675.9 Da |
| Half-Life | ~15 minutes | N/A |
| Amino Acids | 24 | 3 |
| Typical Dose | 10–1000 nM | 0.1-2% in finished skincare products |
| Route | In vitro / ex vivo | Topical |
| Purity | ≥98% | ≥98% |
| Studies Count | 220 | 16 |
| Research Status | Clinical/Pre-clinical | Pre-clinical |
Tetracosactide Benefits
- ✓Melanocortin receptor activation
- ✓Supports melanocyte research assays
- ✓Useful for adrenal-axis studies
- ✓Can inform pigmentation models
Matrixyl Synthe'6 Benefits
- ✓collagen-supportive skincare
- ✓fine-line appearance reduction
- ✓skin-firming support
- ✓matrix-support formula ingredient
Tetracosactide Dosing
10 nM exposure|100 nM exposure|1 uM exposure
Matrixyl Synthe'6 Dosing
Topical serum/cream 0.1-2%|Apply 1-2x daily|Best used in long-term routines
Tetracosactide Side Effects
- ⚠Endocrine activity in vivo
- ⚠Transient membrane stress
- ⚠Peptide instability
Matrixyl Synthe'6 Side Effects
- ⚠mild irritation
- ⚠clogging in heavy formulas
- ⚠rare sensitivity to fatty vehicles
Research Overview
Tetracosactide
Tetracosactide is the synthetic ACTH(1-24) fragment and is commonly used to probe melanocortin receptor signaling. Its melanogenic relevance comes from the same N-terminal motif that drives ACTH-related pigmentation effects.
Matrixyl Synthe'6
Palmitoyl tripeptide-38 has a mix of published cosmetic research and formulation data suggesting benefits for skin appearance and matrix-support signaling. Its practical use is as a topical anti-aging ingredient in combination with hydrators and barrier-support agents.
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