Add Yahoo as a preferred source to see more of our stories on Google. When It Comes to Homemade Masks, the Number of Layers Matters, Study Says With medical grade masks still in short supply and badly ...

A new study suggests that homemade face masks with two or three layers may be more effective in preventing the spread of the novel coronavirus compared with a single-layered face covering. Researchers ...

When it comes to homemade face masks, two or three layers of fabric is best, researchers say. That's what you need to keep droplets from your nose and mouth from spreading the virus, the Australian ...