What should I use to clean my MacBook screen?

Use a damp microfiber cloth with plain water. Avoid alcohol, Windex, paper towels, or your shirt—they can strip the delicate anti-reflective coating. Gently wipe the screen, then dry with a second microfiber cloth. For stubborn grime, a tiny drop of dish soap in the water works, but rinse the cloth well. Never spray anything directly onto the laptop.