Helps Keep Lenses Clean while You Wear Them. For soft and RGP contact lenses. Helps remove protein and prevent buildup during lens wear Over the course of the day, a film of protein and other material can build up on your contact lenses, irritating your eyes and clouding your vision. This is especially true with today s extended wear lenses. Blink-N-Clean® Lense Drops do more than just re-wet lenses. A few drops of the dual-cleansing formula gently removes debris and material that can cause irritation and discomfort. It helps remove protein build-up to keep your lenses as fresh as they can be your vision remains clear. Just a few drops of Blink-N-Clean® Lense Drop.