Boston Advance Cleaner is specifically formulated for rigid gas permeable (RGP) and hard contact lenses. It helps maintain healthy eyes by preventing the accumulation of stubborn deposits and removing protein and lipid deposits from the contact lens. For optimal results, use with Boston Advance Comfort Formula Conditioning Solution. The Advance Cleaner includes titanium dioxide for improved rinsing, acting as a visual indicator. Always choose Boston for your contact lens cleaning needs.