Best For Skin Types
All, Sensitive
Addresses
Usage Frequency
Daily
What Is Tetrapeptide-15?
Tetrapeptide-15 is a short synthetic peptide—a chain of four amino acids created in the laboratory. Peptides are recognised in skincare for their ability to interact with skin cells through multiple pathways, and they can be effective at relatively low concentrations.
This ingredient functions as a skin conditioning agent, meaning it is used to maintain or improve the overall condition and appearance of the skin. It appears in formulations intended for sensitive skin, where it may help support skin comfort.
How It Works
Peptides work by communicating with skin cells. Tetrapeptide-15 can penetrate the outer layer of skin (the stratum corneum) and interact with cellular receptors, potentially influencing how skin cells function and respond to their environment.
This mechanism allows peptides to be effective at low concentrations, which is why they appear in skincare products in relatively small amounts.
Clinical Evidence & References
Research indicates that peptides are used in cosmetics for sensitive skin and are recognised for their multi-mechanism approach to skin support. Tetrapeptide-15 appears in approximately 17% of sensitive skin products from multinational brands, suggesting its use is established in commercial formulations.
However, specific clinical evidence directly demonstrating tetrapeptide-15's efficacy in human skin is limited in available literature. More targeted research would help clarify its particular benefits and optimal use.
Published Research
How to Use
Tetrapeptide-15 is typically found in serums, moisturisers and treatment products designed for sensitive skin. It works best as part of a consistent skincare routine. If your skin is reactive or uncomfortable, introduce products containing this ingredient gradually to assess tolerance, and pair with a robust barrier repair routine.
Safety & Precautions
Frequently Asked Questions
From the Clinic
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Tetrapeptide-21
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