Nano Silver Mouthwash is ... Gold?
There are a surprising number of products out there that claim to have Nano Silver in them. Some are blue others can also be gray in color but the color you need to look for is… gold? Yes, gold. True Nano Silver absorbs light (specifically blue light) in the range of 400-420 nanometers. This is why they appear yellow-orange or honey gold in color. If you see a solution that does not look like this, it is most likely ionic silver or silver which is so small that it no longer reflects light in this range. In order for a Nano Silver solution to be effective, it has to be the right size, so in the case of nano silver mouthwash, color does matter.