Research shows that high-momentum, large-sized surrogate cough droplets can penetrate single- or double-layer surgical masks to a significant extent 1. The penetrated droplets can then break into ...

If you only have a single-layer or loose-fitting mask, it may be smart to wear two at once. To double up, wear one cloth mask over another, or wear a cloth mask over a surgical mask. Experts have long ...

If you purchase an independently reviewed product or service through a link on our website, Rolling Stone may receive an affiliate commission. As far as just using a single-layer mask goes, understand ...

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