[tadol]

French polish is very easily damaged, and pretty easily repaired. Dribble your whiskey on your guitar and you'll see just how easy it is to damage -

Natural lacquers, they'll take a hotter solvent usually, but still pretty easy to find modern chemicals that will interact negatively with them. Nitro is pretty easy to damage, but also not too hard to touch-up.

Varnishes are harder to damage chemically, but still possible. Polyesters (UV cured) seem to be impervious to just about anything.

With all the chemical compounds used in the lining materials, vinyls, foams, glues - even the chemicals now used to cure, color, and tan natural materials like leather - it's a good rule to be extra careful initially when trying a new case, hanger, stand, or anything that comes in contact with the finish.