Sodium carrageenan is a sulfated polysaccharide derived from red seaweed used in skincare as a thickening, gelling, and texture-stabilizing agent. It also provides mild humectant and film-forming properties that can improve product feel and moisture retention.
| Reported effect | How often | Notes |
|---|---|---|
| Skin irritation | Rare | Mild irritation possible, generally in sensitive individuals or at high concentrations. |
| Allergic contact dermatitis | Very rare | Isolated reports of hypersensitivity reactions. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.