Yeast beta-glucan is a polysaccharide derived from the cell walls of yeast (commonly Saccharomyces cerevisiae) used in skincare for its hydrating, film-forming, and soothing properties. It is also studied for supporting skin barrier function and modulating localized immune/inflammatory responses.
| Reported effect | How often | Notes |
|---|---|---|
| Mild transient irritation or redness | Rare | Generally well tolerated; occasional sensitivity reported in susceptible individuals. |
| Allergic contact dermatitis | Very rare | Isolated reactions possible, particularly in those with yeast or fungal sensitivities. |
| Stinging or tingling on application | Rare | Usually associated with compromised or sensitized skin. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.