Boston® Cleaner Advance Formula Removes Deposits. Visibly Tinted for Improved Rinsing. Advance Cleaner - For Rigid Gas Permeable Contact Lenses. Boston Advance® Cleaner heightens wearing comfort by removing lipids and proteins. Leaves your lenses clean, clear and ready for the disinfections step. This unique patented formula is not sold to any retailer as a store brand. Specifically formulated for use with Boston Advance® Comfort Formula Conditioning Solution. 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.