Palmitoyl Tripeptide-1 is a synthetic palmitoylated peptide (sequence Gly-His-Lys) used in cosmetics to signal fibroblasts and support collagen and extracellular matrix synthesis. It is commonly combined with other peptides in anti-aging and firming formulations.
| Reported effect | How often | Notes |
|---|---|---|
| Mild transient skin irritation or redness | Uncommon | Generally mild and resolves after discontinuation; often related to formulation rather than the peptide itself. |
| Contact dermatitis or allergic sensitization | Rare | Isolated reports; patch testing may be warranted in sensitive individuals. |
| Stinging or tingling on application | Rare | Usually temporary and associated with compromised skin barrier. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.