Dr Zoë Hyde on X: "Study showing simple modifications can improve mask effectiveness. For example, tucking in the corners of a procedure mask & tying the loops increased filtration from 39% to
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No, we're not going to rob a bank... we're just off to the beach! Chinese women wear nylon face masks to keep off blazing sun | Daily Mail Online
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Efficiency of Masks for Small Particle Filtration Cloth and Nylon: -Most: 2-layer woven nylon mask with ear loops, aluminum nose brid... | Instagram