Sodium carrageenan ek sulfated polysaccharide hai jo red seaweed se aata hai. Skincare mein iska use thickening, gelling aur texture stabilize karne ke liye hota hai. Yeh mild humectant bhi hai aur film-forming properties deta hai jisse product ka feel accha hota hai aur skin par ek protective layer banti hai. Combination skin aur oily skin ke products mein commonly use hota hai kyunki consistency banata hai.