Lifestyle Health Hollywood's Favorite Face Mask Brand Has Colorful FDA-Approved KN95s — and They're on Sale Hilary Duff, Rihanna, and Elsa Hosk have worn them By Alex Warner Alex Warner Instagram Website Alex Warner is the senior celebrity and entertainment writer and strategist for People.com with over 5 years of experience. People Editorial Guidelines Updated on August 13, 2021 05:37 PM Share Tweet Pin Email We independently research, test, review, and recommend the best products—learn more about our process. If you buy something through our links, we may earn a commission. Photo: Maskc If you're looking to stock up on KN95 face masks, one of Hollywood's favorite face mask brands has Food and Drug Administration-approved options that come in tons of bright colors — and some of them are on sale. With the surge of the Delta variant, the Centers for Disease Control and Prevention is strongly urging everyone to wear a face mask in public indoor places, even if they are fully vaccinated. The CDC and other experts recommend double-masking (wearing a reusable mask over a disposable one), or wearing high-filtration options, such as KN95 masks, for your best chance at preventing the transmission of COVID-19 or the variant. These protective coverings are equivalent to the N95 masks that healthcare workers use and often made in China. The brand came to market last year with stylish disposable options to help with the mask shortage. Its original non-medical masks quickly became a go-to for many Hollywood A-listers, including Jennifer Lopez, Mandy Moore, Chrissy Teigen, Lucy Hale, and Alessandra Ambrosio. Where to Shop the Stylish Face Masks Celebrities Keep Wearing — Including Kate Middleton's Favorite Floral Mask According to the brand, its KN95 masks come from Hefei Kaiwen Sanitary Materials Co Ltd. — an FDA-registered factory. This means Maskc's KN95 masks filter at least 95 percent of airborne particles. Each one is made from the brand's premium hypoallergenic materials using a five-ply construction. They feature three center layers that work together to block bacteria, along with a non-woven exterior and a soft, skin-friendly inner layer. Like its non-medical masks, they come with an adjustable nose bridge for a more secure fit and gentle ear loops that won't tug. Maskc Buy It! Maskc Blush Tones Variety KN95 Face Mask 10 Pack, $36; maskc.com Masks should be discarded after 10 hours of continuous use, which is why Maskc masks come in packs of 10 for $36 or packs of 25 on sale for $80. Its original black KN95 masks sold out less than one month after launching, but luckily they've been restocked in a larger pack. The brand also sells several colorful variety packs that tons of celebrities are choosing over other face masks. Want to unlock even more savings? Sign up to get hand-picked deals delivered by text message. Rihanna stepped out wearing a beige KN95 mask from its earth tones pack and Hilary Duff shared a photo on her Instagram Stories getting her vaccine while wearing a peach-colored one from the same set. Supermodel Elsa Hosk also posted a picture on Instagram wearing a magenta KN95 from its blush tones set. Other fans of the protective face coverings include Jennifer Garner, Sophie Turner, Emma Roberts, Bella Hadid, and Sofia Richie, to name a few. Splash News Online Hilary duff/ instagram Elsa Hosk/Instagram While the KN95s are not intended for double-masking (you should only use one KN95 at a time), you can also get Maskc's non-medical masks that are intended for that — some of which are discounted for as little as $14. Purchase of either includes a resealable bag for safe storage of coverings between use. Whether you're looking for high-filtration, FDA-approved KN95 masks or going the double-masking route, Maskc is a good place to stock up. Maskc Buy It! Maskc Earth Tones Variety KN95 Face Mask 10 Pack, $36; shopmaskc.com Maskc Buy It! Maskc Blush Tones Variety KN95 Face Mask 25 Pack, $80 (orig. $90); maskc.com Maskc Buy It! Maskc Black KN95 Face Masks 25 Pack, $80 (orig. $90); maskc.com Do you love a good deal? Sign up for PEOPLE's Shopping newsletter to stay up-to-date on the latest sales, plus celebrity fashion, home decor and more.