Caring for Your Titanium Art
Although titanium and its colorful oxide coating are immune to time and any chemical that won't send one to an emergency room, oil and dirt can temporarily dull some of the colors.
Also, abrasives can gradually wear away the surface coloring. Protect your titanium from scratches.
Use alcohol or non-moisturizing soap and water and a soft cloth to gently wipe away dulling dirt and oils.
Avoid metal polishes or scrubbing soaps, because these contain abrasives which may scrub away the sub-micron thick color layer.