AQuify MPS contains the unique moisturizing agent, dexpanthenol, which locks in moisture and helps keep lenses from drying. Some multi-purpose solutions require you to take your lenses out and soak them for 4-6 hours. Rub and rinse your lenses with AQuify MPS anytime and they are ready to wear again after soaking in AQuify MPS for just 5 minutes.Data indicate that lens cases are a significant source of microbial contamination. The Pro-Guard lens case is specially formulated to reduce contamination on the lens case surface.The Pro-Guard lens case should not be used by persons who are allergic to silver or other metals, such as nickel.AQuify Multi-Purpose Solution (MPS) is for cleaning, rinsing, disinfecting and storing soft (hydrophilic) lenses, including silicone hydrogel lenses, as recommended by your eye care professional. AQuify MPS is also indicated for daily protein removal when lenses are soaked for at least 4 hours.