Isoeicosane is a synthetic branched-chain hydrocarbon (a hydrogenated isoparaffin) used as a lightweight, non-greasy emollient and solvent in cosmetic formulations. It improves spreadability and texture, particularly in color cosmetics, sunscreens, and skincare products.
| Reported effect | How often | Notes |
|---|---|---|
Mild skin irritation | Rare | Occasional transient irritation reported, generally in sensitive individuals. |
Contact dermatitis / allergic sensitization | Very rare | Very seldom reported; isoeicosane is generally considered low in allergenic potential. |
Comedogenicity (pore clogging) | Rare | Low comedogenic risk, but possible in acne-prone skin depending on overall formulation. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.