Using contact lens solution correctly comes down to a consistent routine: wash your hands, rub and rinse each lens, store them in fresh solution, and keep your case clean. Most eye infections from contact lenses trace back to shortcuts in one of these steps, so the details matter more than you might expect.
Start With Clean, Dry Hands
Before you touch a contact lens, wash your hands with fragrance-free soap. What you dry them with matters too. Lint or fibers from a towel can stick to the lens and irritate your eye. Single-use paper towels are the most hygienic option, but a clean cloth towel works fine at home as long as you swap it out regularly. A dirty cloth towel can actually add bacteria back to your hands. Whatever you use, make sure your hands are fully dry before picking up a lens.
The Rub and Rinse Method
Every time you remove your lenses, you need to clean them before storing. Place the lens in your palm, apply a few drops of multipurpose solution, and gently rub the lens on both sides with your fingertip. This physical rubbing loosens protein deposits, oils, and microorganisms that soaking alone won’t remove. Even solutions labeled “no rub” work better with rubbing.
After rubbing, rinse the lens thoroughly with more solution to wash away whatever you loosened. Then place it in your case and fill the case with fresh solution until the lens is fully submerged. Repeat with the other lens. The whole process takes about 30 seconds per lens.
Never Top Off Old Solution
One of the most common mistakes is adding fresh solution to whatever is already sitting in the case. This dilutes the disinfecting power of the new solution and creates a breeding ground for bacteria. Pour out all the old solution every single time, rinse the case with fresh solution (not water), and then fill it with a full amount of new solution before dropping your lenses in. Fresh solution, every time, no exceptions.
Multipurpose Solution vs. Saline
These two products look similar on a shelf but do very different things. Multipurpose solution cleans, disinfects, rinses, and stores your lenses. It’s the all-in-one product most people use daily. Saline solution, on the other hand, is just sterile salt water. It won’t kill germs and should never replace your cleaning solution. Saline is useful for rinsing lenses after disinfection, but it cannot disinfect on its own.
How Hydrogen Peroxide Systems Work
Hydrogen peroxide solutions are a powerful alternative to multipurpose solutions, especially for people with sensitive eyes or solution allergies. But they require an extra step that you cannot skip: neutralization.
You place your lenses in a special case that comes with the solution. Most systems are one-step, meaning the case has a built-in neutralizing disc that slowly converts the hydrogen peroxide into plain water and oxygen while your lenses soak. Your lenses need to soak for at least six hours for this conversion to complete. If you take them out early, residual peroxide will cause serious stinging, burning, and potentially damage the surface of your eye.
Two-step systems require you to add a separate neutralizing tablet after the disinfecting stage. Either way, never rinse your lenses with hydrogen peroxide solution and put them straight into your eyes. Never pour hydrogen peroxide solution directly into your eyes. And never use a regular contact lens case with a peroxide system, since it won’t have the neutralizing component.
Keep Water Away From Your Lenses
Tap water, bottled water, distilled water: none of these are safe substitutes for contact lens solution. Tap water in particular can harbor a parasite called Acanthamoeba that causes a painful, hard-to-treat eye infection. Research has identified highly virulent strains of this organism in municipal water supplies. In one UK study, over 90% of contact lens wearers who completely avoided water exposure during lens care avoided this infection.
This means you should also remove your lenses before swimming, showering, or washing your face. If water splashes onto your lenses, disinfect them with proper solution before wearing them again. Never rinse your case with tap water either.
How to Clean Your Lens Case
Your case needs its own daily cleaning routine. After you put your lenses in each morning, dump out the leftover solution, rinse both wells and the caps with fresh contact lens solution, then leave the case open and face-down on a clean surface to air dry completely. Bacteria thrive in moisture, so letting the case dry out between uses is one of the simplest ways to prevent contamination.
Even with perfect daily cleaning, replace your case every one to three months. Biofilm, a thin layer of bacteria that clings to plastic surfaces, builds up over time and becomes resistant to disinfection. Most multipurpose solution bottles come with a new case included, so swap it out each time you open a new bottle.
Solution Shelf Life
Every bottle of contact lens solution has an expiration date printed on it. Don’t use it past that date, even if the bottle is still sealed. Once you open a bottle, most manufacturers recommend discarding whatever remains after 90 days. Prolonged exposure to air introduces contaminants that reduce the solution’s ability to disinfect. Write the date you opened the bottle on the label so you don’t lose track.
Quick Reference for Daily Lens Removal
- Wash your hands with fragrance-free soap and dry them on a clean, lint-free towel.
- Remove one lens and place it in your palm.
- Rub the lens gently on both sides with a few drops of multipurpose solution.
- Rinse the lens thoroughly with more solution.
- Empty your case completely and rinse it with fresh solution.
- Fill the case with fresh solution, place the lens inside, and repeat with the other eye.
- Air dry the case face-down each morning after inserting your lenses.
Sticking to this routine consistently is the single most effective thing you can do to keep your eyes healthy as a contact lens wearer. Most of the infections eye doctors see come not from defective products but from small, repeated shortcuts in daily care.