Acetyl Hexapeptide-39
INCI: ACETYL HEXAPEPTIDE-39
Also known as: Acetyl Hexapeptide-39
A peptide designed to support skin conditioning and structural integrity
At a glance
Best For Skin Types
All, Mature
Addresses
Usage Frequency
Daily
What Is Acetyl Hexapeptide-39?
Acetyl Hexapeptide-39 is a synthetic peptide—a short chain of amino acids—created to mimic natural peptide functions within the skin. Peptides are fundamental building blocks involved in skin structure, repair, and maintenance of the extracellular matrix.
In skincare formulations, this ingredient functions as a skin conditioning agent, working to support the skin's natural processes rather than delivering dramatic transformation. It belongs to a broader category of biomimetic peptides increasingly used in modern skincare to support skin health.
How It Works
Acetyl Hexapeptide-39 is designed to mimic natural peptides that the skin produces as part of its normal homeostasis and repair processes. By delivering these peptide sequences topically, the ingredient aims to support the skin's own conditioning mechanisms.
The exact mechanisms remain incompletely understood in the research literature. Peptides in general are large, hydrophilic molecules, which means skin penetration is limited—most of the benefit is likely achieved at or near the skin surface rather than in deeper layers.
Clinical Evidence & References
Research on Acetyl Hexapeptide-39 specifically is limited. Much of the available evidence concerns related peptides such as Acetyl Hexapeptide-8, which has been studied for its potential effects on neuromuscular signalling. However, direct evidence of efficacy for Acetyl Hexapeptide-39 in human studies is not readily available in published literature.
The ingredient is generally recognised as safe in cosmetic formulations, and peptides are well-established as skin conditioning agents. However, users should approach claims of dramatic anti-aging effects with caution, as the evidence base for this specific peptide remains underdeveloped.
How to Use
This ingredient is typically found in serums, creams, and moisturisers designed for mature or texture-concerned skin. Apply to clean skin as directed on product packaging. Peptide-containing products can be layered with other actives, though as with any new addition to a routine, introduce gradually to monitor tolerance.
Safety & Precautions
Regulatory information
Standardised cosmetic-ingredient identifiers used by regulators.
Show identifiers
- INCI Name
- ACETYL HEXAPEPTIDE-39
- Function
- Skin Conditioning
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