A synthetic five-amino-acid peptide used as a skin-conditioning ingredient.
What it is
Pentapeptide-18 is, according to CosIng, a synthetic peptide made up of the amino acids alanine, glycine, leucine, phenylalanine and tyrosine. CosIng lists it as a skin-conditioning ingredient.
Where it is used
Found in serums, face creams and eye creams.
Limits of interpretation
The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.
The label does not show the amount used.
Functions
- Skin conditioning
- Maintaining the skin in good condition.
EU regulation
This ingredient is not listed in the annexes of Regulation (EC) No 1223/2009 in the CosIng data.

