article_snippet.sent: It is the perfect invention for the house proud - a substance that means clothes will never stain, glass will not mist and kitchen surfaces automatically shed clothes germs.
article_snippet.sent: Scientists  have developed a ‘self-cleaning’ coating that can be sprayed  onto materials.
article_snippet.sent: The substance, made out of coated titanium dioxide nanoparticles, works because it is very, very water resistant.
article_snippet.sent: The breakthrough, by chemists at University College London, comes after years of research into highly water-resistant - or ‘superhydrophobic’ - substances.