I tried to use Tar-X as a sort of clay lube, kill two birds with one stone kind of thing, ruined one of my Nanoskin pads. I believe any organic solvent will ruin these pads. Organic solvents include most petroleum based products, things like tar removers, WD-40, paint thinners, most waxes and sealants. The polymer coating on the "fake clay" is organic, so an organic solvent tries to dissolve it, of course. IPA is a weak organic solvent, don't know about that. Iron-X, not sure if it's in an organic solvent carrier, but I don't think it is, so it might be OK. A really strong detergent behaves like a weak organic solvent (while being in an inorganic solvent carrier, water, which is why detergents are valuable, you get a sort of universal solvent), so my guess is a strong detergent could eat away at a "fake clay."