What it is
Palmitoyl Tetrapeptide-10 is a tetrapeptide linked to palmitic acid, which improves its compatibility with skin lipids. In cosmetics it is used as a leave-on conditioning peptide, often included in blends intended to support skin comfort and a smooth feel. It is used at very low concentrations.
Safety & warnings
Synthetic palmitoyl peptides are generally well tolerated at the trace levels used in leave-on products, with a low likelihood of irritation or sensitization.
Origin & sourcing
Synthetic; produced by peptide synthesis and conjugated to a palmitoyl (fatty acid) chain.
Questions everyone asks
What is the role of palmitoyl tetrapeptide-10?
It is a conditioning peptide used in leave-on skincare to support a smooth, comfortable feel; it is not a UV filter.
What does the palmitoyl part do?
The palmitic acid chain helps the peptide associate with skin lipids for better delivery in a formula.