over the years, it’s been really hard to keep screens perfectly clean. macbook screens, ipad screens any computer screen. one of the best cleaners i have ever used has been these finishing cleaners. i start with zeiss cleaner, then finish with a swipe from this. the secret is carbon. also known as lamp black. yes this black powder really cleans surfaces well. absolutely soaks up oily fingerprints leaving a remarkably unblemished view. carbon absorbs oil really really well. i would highly recommend picking a couple of these things up – they last quite a long time.