Biotrue Multi-Purpose Solution helps make wearing contact lenses easier on your eyes. It’s formulated to work like your eyes. When used daily, Biotrue multi-purpose solution:• Provides up to 20 hours of moisture• Matches the pH of healthy tears • Kills 99.9% of all germs tested • Help prevent the formation of irritating deposits on the lens surface.• Dissolves protein and cleans, loosens and removes debris and deposits from lenses.• Kills harmful microorganisms (germs) on the lens.• Envelops the lens in a moisture-rich cushion while your lens is soaking to help the lens remain comfortable throughout the day.• Is used to rinse and store lenses.