Pullulan is a naturally derived polysaccharide produced by fermentation of starch by the fungus Aureobasidium pullulans. In skincare it forms a thin, breathable film on the skin, providing a temporary tightening or smoothing effect and helping to stabilize formulations.
| Reported effect | How often | Notes |
|---|---|---|
Skin irritation or redness | Rare | Generally well tolerated; mild irritation reported infrequently in sensitive individuals. |
Allergic contact dermatitis | Very rare | Isolated cases; pullulan is considered low risk for sensitization. |
Temporary skin tightness | Uncommon | Related to its film-forming effect rather than a true adverse reaction. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
Peer-reviewed papers on this ingredient, via PubMed.