CycloTetrapeptide-24 Aminocyclohexane Carboxylate is a synthetic cyclic peptide used in cosmetic formulations, marketed to support skin firmness and reduce the appearance of fine lines by modulating dermal matrix proteins. As a relatively novel ingredient, robust independent clinical data are limited.
| Reported effect | How often | Notes |
|---|---|---|
Mild transient skin irritation or redness | Uncommon | Localized and typically resolves after discontinuation; more likely with sensitive skin. |
Contact dermatitis or allergic sensitization | Rare | Possible with peptide ingredients; patch testing advised for reactive skin. |
Stinging or itching on application | Rare | Generally short-lived and formulation-dependent. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.