Fructan is a polysaccharide composed of fructose units, used in skincare as a hydrating and skin-conditioning ingredient that helps attract and retain moisture and may support the skin barrier and microbiome. It is generally regarded as a mild, well-tolerated formulation ingredient.
| Reported effect | How often | Notes |
|---|---|---|
Mild transient irritation or redness | Rare | Typically associated with overall formulation rather than fructan itself. |
Contact allergy or sensitization | Very rare | Polysaccharide humectants rarely sensitize; isolated reports only. |
Stinging on application | Rare | More likely on compromised or sensitive skin. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
Peer-reviewed papers on this ingredient, via PubMed.