Glycoproteins are protein molecules bound to carbohydrate chains, used in skincare for their moisturizing, film-forming, and skin-conditioning properties, often derived from yeast ferments or other biological sources. They may help support skin hydration and barrier function.
| Reported effect | How often | Notes |
|---|---|---|
| Contact irritation (redness, stinging) | Uncommon | Possible in sensitive skin or with high concentrations. |
| Allergic contact dermatitis | Rare | Protein-based ingredients can occasionally trigger sensitization in predisposed individuals. |
| Hypersensitivity reaction in those with relevant source allergies | Very rare | Risk relates to the biological source of the glycoprotein. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.