Wipe regularly with a soft, damp cloth and mild soapy water, then dry with a clean towel. Avoid abrasive cleaners, scouring pads, and harsh chemicals that may damage the graphite finish. Do not use bleach-based products on or near the holder. For fingerprints or marks, gently buff with a microfiber cloth. Check fixings occasionally and re-tighten screws if the holder feels loose.