Bombay Pen Cleaner quickly dissolves dried India ink from the innards of pens, lettering instruments, and brushes. This non-toxic, non-corrosive formula won't harm metal pen tips or parts. Dip or soak tools to safely clean brushes, airbrushes, dip pens, and ruling pens. Bombay Pen Cleaner can also be used to remove dried dyes, pigments, acrylics, and watercolors. Comes in a 2 oz plastic bottle.