100% invisible (when dry)

Unlike the 100% sticks everything to everything glue (no-one could get the lid off) and the universal solvent (the manufacturers didn't manage to develop a container that would hold it), the 100% invisible varnish has a useful attribute which is that you can see it whilst it's wet - so you know how far to dip the brush in and you know which bit you've painted. We're just waiting now to see if the furniture itself disappears.