Tridecane is a hydrocarbon (alkane) used in cosmetic formulations as an emollient, solvent, and texture-enhancing agent that improves spreadability and provides a smooth skin feel. It is considered a base/formulation ingredient rather than a treatment active.
| Reported effect | How often | Notes |
|---|---|---|
| Mild skin irritation | Rare | Occasional irritation reported, generally in sensitive or compromised skin. |
| Contact dermatitis / allergic reaction | Very rare | Hydrocarbon emollients rarely sensitize; reactions are uncommon. |
| Skin dryness with prolonged exposure | Rare | Solvent properties may contribute to mild barrier disruption in some users. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
Peer-reviewed papers on this ingredient, via PubMed.