A video recording showed that the 3-ply surgical mask was the most effective, but even a single-layer mask reduced the spread of droplets.
More Layers Are Better With Homemade Face Masks
FRIDAY, July 24, 2020 (HealthDay News) -- 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 scientists found.
Several kinds of material have been suggested for making masks, but there's little or no evidence of how effective they are, the team noted.