Cloth Masks, Surgical Masks, or Double Masks: Which Are Safest?

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There's a lot of information out there. Here's how to find the right face covering for you. As new, more contagious mutations of COVID-19 emerge, Europeans are ditching homemade cloth masks for the sturdier stuff. In accordance with a new public mandate in Germany, people must wear an N95 or a surgical mask when visiting the grocery store or using public transportation. The same deal goes for France, where citizens are encouraged to swap hand-sewn face coverings for single-use surgical masks. But should you really toss your stash of handmade face coverings and opt for medical-grade equipment instead? This content is imported from {embed-name}. You may be able to find the same content in another format, or you may be able to find more information, at their web site. Do you wear cloth masks? Yep, they get the job done, and I like to personalize them. Nope, I only wear medical-grade masks. We looked through the latest medical research to evaluate some of the most popular masks out
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Wearable hair loss regrowth device tested

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hair loss.<br />GettyImages
Finding a simple way to boost hair regrowth remains a challenge for researchers.
A new paper claims that micro LEDs might be the answer we have been looking for.
Hair loss affects millions of people, globally. For some, it is of little concern, but for others, it can impact both self-esteem and confidence.
For these people, finding a way to regrow hair as quickly as possible is important.
The causes of hair loss are very varied; they can include genetic factors, long-term stress, ageing, and higher levels of male hormones.
Despite years of dedicated research, boosting hair growth is still hit and miss, expensive, painful, or all of the above.
The current options include a drug called minoxidil (a vasodilator), corticosteroid injections, and hair transplant surgery.
Away from the pitfalls of drugs and surgery, some researchers are turning to the potential use of light.
A new study investigates the possibility of a wearable, light-based solution to hair loss.
Earlier studies have revealed that lasers can help regrow hair by stimulating hair follicles, leading to increased cell differentiation.
Red light is particularly successful because its wavelength penetrates skin better than the shorter wavelengths of green and blue light.
It may be promising and without apparent side effects, but the equipment necessary for laser hair treatment is large, expensive to power, and difficult to use; this makes it impractical for home use and therefore limits its availability.
A paper — published recently in the journal ACS Nano — describes a flexible, wearable device based on micro-light-emitting diodes (micro LEDs).
This technology is currently being tested for a range of applications thanks to its durability, flexibility, and conveniently small size.

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