Multifunctional solution. Improves the comfort of the lenses Provides a pH balance that respects tears Eliminates 99.9% of germs Lens case included. The multifunctional Biotrue solution moisturizes, cleans, removes proteins, decontaminates, rinses and preserves. When you wear contact lenses, your eyes are exposed to external stress. Lack of sleep and prolonged computer work can irritate and dehydrate your eyes, especially if you wear lenses. Biotrue improves the comfort of the lenses because its formula is inspired by your eyes. Biotrue offers a pH balance identical to that of tears and contains a lubricant naturally present in the eyes.