The claim sound outrageous, however you slice it. You buy a spray can for under R100, turn it on your favourite pair of velvet pants, and they last forever. If the dust buildup gets really bad, you just rinse it under the tap.

… In the meanwhile, however, nanomaterial experts have just one little problem: silicosis. Breathing in silicon dust can cause severe lung problems. Breathing in other materials that are innocuous until manufactured on nano-scale have also been shown (in preliminary research, still to be confirmed) to cause lung cancer. If the liquid glass product is prone to erosion into particles rather than remain a single surface when under stress, its health risks could easily outweigh any benefits. But we won’t know that until more independent research is done, and the time that’ll take may delay Nanopool’s planned revolution for a while yet.