What you need
That is it. You do not need special screen cleaning kits, and most household cleaners will damage your display.
What to never use
The cleaning process
Step 1: Turn off the monitor and let it cool down. A warm screen makes cleaning streaks more likely, and a dark screen makes it much easier to see dirt.
Step 2: Dry wipe first. Using a clean, dry microfiber cloth, gently wipe the screen in broad strokes from top to bottom. This removes most dust and fingerprints without any liquid.
Step 3: Dampen if needed. If dry wiping is not enough, lightly dampen (not wet) the microfiber cloth with distilled water. Wring it out until it is barely moist. Never spray liquid directly onto the screen.
Step 4: Wipe gently. Use light, even pressure. Do not press hard or scrub. Let the microfiber do the work.
Step 5: Dry immediately. Use the dry side of the cloth or a second dry microfiber cloth to wipe away any remaining moisture.
How often to clean
For most people, a thorough cleaning once every two to four weeks is sufficient. If you eat at your desk or have pets, you may need to clean more frequently. Dust the screen lightly with a dry microfiber cloth whenever you notice buildup.