Two kinds of laptop grime.
One pocket-size answer.

WHY THE DESIGN MAKES SENSE

Dust and fingerprints are different cleaning problems.

A keyboard brush works by moving particles away without grinding them into a surface. A microfiber pad works by increasing contact area and collecting oils in its fine fibers. Combining them is not technologically dramatic; it is good tool discipline. The dry brush should touch the crevices, while the clean pad should touch the display.

The separation can fail if the pad becomes dirty. OXO’s compact format encourages the tool to live in a bag, but a capped pad is not self-cleaning. Inspect it before it meets a screen. Any trapped grit can turn a wiping tool into an abrasive one. The same caution applies to every microfiber cloth, regardless of brand.

A safer three-minute routine

Power the laptop down and unplug it. Tilt the keyboard slightly and use short, light brush strokes that move debris outward. Do not jab the brush below the keycaps. Check that the microfiber end is clean, then wipe the display with minimal pressure. If marks remain, stop and consult the device maker’s instructions rather than adding household cleaner. Apple’s published guidance, for example, calls for shutting down and unplugging devices, avoiding aerosol sprays and excessive moisture, and using a soft lint-free cloth.

Where this tiny tool stops being useful

It cannot remove internal dust, repair a sticky key, sanitize a shared keyboard, or solve a liquid spill. It is also less economical if you already keep a clean microfiber cloth and a dedicated electronics brush at the desk. The value is consolidation: two dry-cleaning tools in one protected object, ready before dust becomes a weekend project.