Ingredient library
Acetyl tetrapeptide-3 (signal peptide)
INCI: Acetyl Tetrapeptide-3
The peptide of the Capixyl-style complex, paired with red clover, included to support the look of a fuller, denser lash line.
Evidence and limitations
Backed mainly by the ingredient supplier's clinical data generated on scalp hair; independent peer-reviewed evidence in lashes is limited.