Sucrose Acetate Isobutyrate (SAIB) is changing the durability of nail polish products. This unique plasticizer is easy to use and provides superior nail polish performance. It's compatible with other nail lacquer ingredients such as resins, solvents, and other plasticizers. Eastman's SAIB also functions as a fragrance fixative and an adhesion promoter; its tack allows better adhesion of nail lacquer to fingernails.