Dust. Nothing dulls a mirror's sheen like a layer of dust. Use a microfiber towel or another soft cloth that won't scratch the finish or leave lint flecks.
Polish. Remove smudges, fingerprints and other marks with a soft cloth and a mirror-safe glass cleaner (check the label). Spray cleaner onto the cloth rather than onto the mirror. A solution of distilled white vinegar and water can help wipe away stubborn smears. Be sure not to leave residual streaks as you go.
Once a Month
Inspect for chips and scratches.Mirrored finishes are prone to dings, so give your piece a regular once-over. If you spot a flaw, you can have it professionally repaired. Also, check for sharp or jagged objects that can scrape or nick the finish if they happen to fall on it or get dragged over it.
Mop up spills. Water and other liquids can mar the finish if they sit for too long, so wipe them up right away. Avoid using toiletries such as shaving cream, perfume, nail polish remover and rubbing alcohol near a mirrored piece — over time, they can damage the surface.
Use extra caution during transport. If you move mirrored furniture to a different spot in the house, take precautions to avoid breakage, chips and scrapes. Transport it by hand, as dollies and other mechanical devices can stress the joints and cause cracks, and never drop it or set it down hard. It may be worth hiring pros (licensed and insured) to handle very heavy, expensive or delicate pieces.
Keep little fingers and paws away. Kids and pets don't mix well with mirrored surfaces, so stay away from using mirrored pieces in family spaces or other high-traffic zones. If you choose to do so, consider covering them with a soft sheet or quilt during playtime.