At first I was a bit sceptical, but it really does the trick. The mirror doesn't fog up easily. The water drops and the mirror do not get on well anymore. I have applied it once and apparently this one application is going to last for a year. A quite economical bottle and all you need to keep it clean is a soft cloth, no mirror or glass cleaners. I would recommend it.
Silver Nano Mirror Protection Applied to the mirror surface the Silver Nano Mirror Protection forms a hydrophobic film which causes repulsion of water droplets. The drops of water do not settle on the surface, but run down and flush the dirt particles off (self-cleaning properties). This product is characterized by deep penetration and fast drying time. The mirror surface become more shiny. The nano coating contains the particles of silver that restrict the development of fungi, mites and molds.