Cyclotetra Peptide is a synthetic cyclic four-amino-acid peptide used in cosmetic formulations as a signaling agent intended to support collagen synthesis and improve skin firmness and texture. It is typically incorporated into anti-aging serums and creams at low concentrations.
| Reported effect | How often | Notes |
|---|---|---|
Mild skin irritation or redness | Rare | Transient and usually resolves after discontinuation; more likely in sensitive skin. |
Contact dermatitis or allergic reaction | Very rare | Isolated hypersensitivity reactions; patch testing recommended for sensitive individuals. |
Mild stinging or tingling on application | Rare | Often related to formulation pH or accompanying ingredients rather than the peptide itself. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.