Sheet masks are a popular way to hydrate the skin, but they’re definitely not one size fits all. “Most of the time, there’s always something off about how a sheet mask fits but the perfect fit is only ...

The fit of your face mask has a lot to do with how effective it is — the tighter the better for filtering your breath and keeping others safe from viral particles, including those of COVID-19. That ...

It's back-to-school season, and with the emergence of the delta variant of COVID-19, some school districts are mandating masks again for the new academic year. The Centers for Disease Control and ...

The Centers for Disease Control and Prevention (CDC) has changed its guidelines about masks and respirators a number of times over the past two years and gave its most recent update on January 14, ...

CAMBRIDGE, MA -- Wearing a mask can help prevent the spread of viruses such as SARS-CoV-2, but a mask’s effectiveness depends on how well it fits. Currently, there are no simple ways to measure the ...