Boston Advance Cleaner Conditioning Solution Multipack - 3x 30ml Cleaner, 3x 120ml Conditioning Solution, Contact Lens Solution for Rigid Gas Permeable & Hard Contact Lenses. This solution is specially formulated for rigid gas permeable (RGP) and hard contact lenses. The Cleaner prevents accumulation of stubborn deposits and removes protein and lipid deposits. The Conditioning Solution destroys harmful organisms on the surface of RGP and hard contact lenses. It features a multi-polymer comfort system which cushions the lens upon insertion, maintains and enhances contact lens wettability throughout the day, to avoid dry eyes. The Conditioning Solution reduces friction against both the cornea and the eyelid while removing particulate matter that may cause irritation and discomfort.