Face masks are increasingly available from major retailers and speciality brands alike, some boasting removable or built-in filters. Here's what to know.

While most face masks with pockets often come with a filter, they don't last forever. So, if yours could use replacing, we're here to help you shop the best choices on the internet right now.

Researchers say adding a filter to face masks may offer extra protection to the wearer, instead of just those nearby. A Cooling Face Mask, ‘Freezer Dress’ and More Finds to Beat the Heat, From ...

A Comfortable Mask: Face Mask with Filter Pocket Nose Wire and Filters. This Face Mask with Filter Pocket Nose Wire and Filters ($3) can adjust to fit your face. Plus, it's so affordable.

Doctors and scientists share the best face-mask filters, including polypropylene filters, PM2.5 filters, vacuum filter bags, and even tissues, from brands like Figs, Oura, Caraa, and Vida.

Face masks with filters add another layer of protection, experts say. More than 20 states now require people to wear face coverings in public. By Becky Worley , Anthony Kane, ...

är Nanofilter Masks: Based in Prague, är takes a similar approach, using a disposable EU-made three-layer nano filter insert, which blocks up to 99.8% of particulates.

Enro’s popular (and often sold-out) face masks feature a built-in PM0.1 filter, which blocks 98.5 percent of particles of .01 microns and maintains the same protection after over 100 washes.

They would then measure the ratio of particles on either side to determine each fabric’s effectiveness as a filter. The researchers used sodium chloride (NaCl) as a substitute to model the SARS ...

COVID N95 respirator masks fit tightly around your face. They filter out 95% or more of the smallest particles in the air. But they have to fit just right in order to work.

Doctors recommend the best face masks and filters for preventing smoke inhalation during wildfires. Their picks include N95 masks, KN95 masks, KF94 masks, and 3M P100 respirators.

Fabric from a cotton sheet combined with material from a prom dress, an old tie, or a pair of pajamas could allow people to make a mask with a filter that’s nearly as good as the vaunted N95 ...