For rigid gas permeable contact lenses. Sterile. Removes deposits. Visibly tinted for improved rinsing. This unique patented formula is not sold to any retailer as a store brand. Boston Advance Cleaner heightens wearing comfort by removing lipids and proteins. Leaves your lenses clean, clear and ready for the disinfection step. Our Ingredients & What They Do: Tri-quaternary Cocoa-Based Phospholipid, Silica Gel, Alkyl Ether Sulfate - Effectively removes dirt and stubborn deposits from your lenses for clean, comfortable wear. Titanium Dioxide - Visibly tinted so you can see your cleaner has been thoroughly rinsed off. Because your eyes are so important, don't experiment with just any brand. Not all gas permeable contact lens cleaners are the same. Use only the brand recommended by your doctor.