Boston Advance Comfort Formula Conditioning Solution is a specially formulated solution for rigid gas permeable (RGP) and hard contact lenses. It contains a patented, multi- polymer comfort system that binds and coats the surface of the lens. It cushions the lens upon insertion and maintains and enhances lens wetability throughout the day. The patented multi- polymer system of Boston Advance Comfort Formula Conditioning Solution reduces friction against both the cornea and the eyelid while removing particulate matter that may cause irritation and discomfort. This formula is designed to be biocompatible with your eyes.