Boston Advance Comfort Formula Conditioning Solution combines dual disinfection with a patented cushioning system to soothe your eyes and provide lens wearing comfort. Disinfection System: Chlorhexidine Gluconate (0.003%), Polyaminopropyl Biguanide (0.0005%), Edentate Disodium (0.05%): Dual disinfecting system destroys micro-organisms (germs). Wetting and Cushioning System: Patented Derivative Polyethylene Glycol, Cellulosic Viscosities, Cationic Cellulose Derivative Polymer, Polyvinyl Alcohol: Enhances comfortable wear by surrounding lenses with moisture for complete wetting; Cushions lenses with a comfort system for more comfortable insertion and wear.