OPTI-FREE® Puremoist® Multipurpose Contact Lens Solution provides comfort and moisture from insertion to removal. Hydraglyde® Moisture Matrix works independently of your tear film to keep moisture on your lenses. It also maintains a cushion of moisture that allows your eyelid to glide over the surface of the lens without irritation. How to use: Fill the empty lens case with solution. 2. Wet each side of the lens with the solution. 3. Rub each lens for 20 seconds with your finger. 4. Rinse each side of the contact lens for 10 seconds with a steady stream of the solution. 5. Place the lenses in the case, tighten the lids and wait overnight or at least six hours. Discard any remaining solution six months after first opening.