INCI name

TETRAPEPTIDE-21

Tetrapeptide-21

A synthetic four-amino-acid peptide used as a skin-conditioning ingredient.

What it is

Tetrapeptide-21 is, according to CosIng, a synthetic peptide made up of the amino acids glutamic acid, glycine and lysine. As a tetrapeptide, it consists of four amino acid units. 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.

Products with this ingredient (26)

Check a full ingredient list