Polybutene ek synthetic liquid polymer hai jo butene se banaya jaata hai. Isko cosmetics mein emollient, thickening agent, aur binder ke roop mein use kiya jaata hai. Yeh gloss deta hai, viscosity badhata hai, aur smooth, non-tacky film banata hai. Polybutene commonly lip glosses, balms, aur dusre long-wear products mein milta hai.