What it is
Palmitoyl Tetrapeptide-7 is a four-amino-acid peptide attached to a palmitic acid chain that improves its ability to penetrate the skin. It is one of the matrikine-type signal peptides used in serums and creams for their skin-conditioning and smoothing-associated benefits, and it is often paired with related peptides in anti-aging formulas. In sunscreens it appears as a supporting conditioning active rather than a sun-protective ingredient.
Safety & warnings
Palmitoyl Tetrapeptide-7 is used at very low concentrations and is generally well tolerated, with no widely recognized allergenicity or comedogenicity concerns at typical levels.
Origin & sourcing
Synthetic; manufactured by peptide synthesis and then conjugated to a palmitoyl (fatty-acid) group.
Questions everyone asks
What is palmitoyl tetrapeptide-7?
It is a synthetic fatty-acid-linked peptide used as a skin-conditioning ingredient in anti-aging-positioned products.
Why is the palmitoyl part included?
The palmitoyl fatty-acid chain helps the peptide penetrate the skin's surface more effectively.