Tetrapeptide-3 is a synthetic peptide used in cosmetic formulations to support the appearance of firmer skin and reduce visible fine lines, often paired with other peptides to signal extracellular matrix activity. It is typically incorporated into serums and creams at low concentrations.
| Reported effect | How often | Notes |
|---|---|---|
Mild transient irritation or redness | Rare | Generally well tolerated; mild stinging may occur in sensitive skin. |
Contact dermatitis or allergic reaction | Very rare | Possible sensitivity to the peptide or accompanying formulation excipients. |
Itching or tingling at application site | Rare | Usually subsides shortly after application. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.