Boston ADVANCE Cleaner Contact Lens Solution, from the eye care experts at Bausch + Lomb, is step 1 in the Boston ADVANCE Formula Care System. This solution cleans your lenses and prevents the accumulation of stubborn deposits which can impair the wearing comfort of your contact lenses. To use, wash hands and rub both sides of the lenses carefully with 2 to 4 drops in the palm of your hand for 20 seconds. Then, rinse each side of the lens thoroughly with a saline solution indicated for the care of RGP contact lenses to remove the cleaner. The cleaning solution is visibly tinted so you can see your cleaner has been thoroughly rinsed off. Your lenses are now ready for step 2 - disinfection and conditioning using Boston ADVANCE Conditioning Solution (sold separately). For full instructions, see information printed inside the product carton. For fluoro silicone acrylate and silicone acrylate rigid gas permeable contact lenses. Not for use with soft (hydrophilic) contact lenses.