Sorbitan sesquiisostearate ek nonionic surfactant hai jo sorbitol aur isostearic acid se banta hai, aur creams aur lotions mein water-in-oil aur oil-in-water emulsions ko stable rakhne ke liye use hota hai. Yeh ingredient skin ko directly treat nahi karta, balki formulation ko sahi texture aur consistency dene mein madad karta hai.