Pentapeptide-4(0.1ppb)
Pentapeptide-4(0.1ppb)
Synthetic signal peptide with the sequence Lys-Thr-Thr-Lys-Ser (KTTKS). In cosmetics it is used as an anti-aging peptide intended to support a more youthful appearance by signaling skin to support matrix/collagen-related pathways. PubChem lists the INCI as Pentapeptide-4, molecular formula C23H45N7O9, and molecular weight 563.6 g/mol; CIR reviewed Pentapeptide-4 with related pentapeptides for cosmetic use. ([pubchem.ncbi.nlm.nih.gov](https://pubchem.ncbi.nlm.nih.gov/compound/9959565?utm_source=openai))
Benefits
Chemical Properties
Skin Type Compatibility
Interactions
Risks & Warnings
Generally low-risk in topical cosmetic use. Main concerns are uncommon irritation, sensitivity to the full formulation, or reduced stability if the peptide is exposed to extreme pH, heat, or prolonged storage. No inherent comedogenicity is expected for the peptide itself. ([cir-safety.org](https://cir-safety.org/supplementaldoc/safety-assessment-myristoyl-pentapeptide-4-palmitoyl-pentapeptide-4-and-pentapeptide?utm_source=openai))
