Biotrue is formulated to work like your eyes. By studying how the eye naturally works to clean, hydrate, and keep itself healthy, Bausch Lomb developed a unique and innovative solution to provide outstanding care for soft contact lenses. Biotrue multi-purpose solution moistens in a way your eyes do as it uses a lubricant also found in your eyes and it is pH balanced to match healthy tears. Biotrue solution helps prevent certain tear proteins from denaturing for clean contact lenses and it kills harmful microorganisms on the lens for healthy contact lens wear.