It has a lubricant found naturally in your eyes. It matches the pH of healthy tears. Keeps certain beneficial tear proteins active Biotrue works like your eyes and goes beyond cleaning by bringing together three bio-inspired innovations: It has a lubricant found naturally in your eyes. It matches the pH of healthy tears. It keeps certain beneficial tear proteins active Biotrue provides the health and comforts your eyes deserve, helping to make wearing contact lenses easy on your eyes.