Chondrus Crispus (Carrageenan) Extract is a red seaweed (Irish moss) derivative used in skincare as a thickener, gelling agent, and hydrating film-former that helps bind water and improve texture. It contributes a smooth feel and conditioning to formulations rather than acting as a corrective active.
| Reported effect | How often | Notes |
|---|---|---|
Contact irritation | Rare | Mild transient irritation possible in sensitive individuals, generally well tolerated topically. |
Allergic contact dermatitis | Very rare | Isolated sensitization reports; uncommon for marine polysaccharides. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.