单词	free radical
释义	free radical noun : an especially reactive atom or group of atoms that has one or more unpaired electrons especially : one that is produced in the body by natural biological processes or introduced from an outside source (such as tobacco smoke, toxins, or pollutants) and that can damage cells, proteins, and DNA by altering their chemical structure Example Sentences Recent Examples on the Web One of the firming moisturizers that King recommends both protects the skin's barrier and fights free radical damage. Jamie Wilson, Harper's BAZAAR, 1 Sep. 2022 Ideal to heal stressed skin, add this into your routine to not only calm and soothe, but also brighten your complexion and protect against free radical damage. Kiana Murden, Vogue, 23 Aug. 2022 This post-shower oil is also formulated with antioxidants to retain moisture, boost your skin's radiance, and fight off free radical damage. Jennifer Hussein, Allure, 19 Aug. 2022 Meanwhile, antioxidant-rich guava extract protects your hair from free radical damage. Jennifer Hussein, Allure, 15 July 2022 It's filled with Avya's signature ingredients: hyaluronic acid for hydration; Vitamin C for brightening, collagen boosting, and free radical prevention, and Niacinamide to reduce pore size. Akili King, Vogue, 1 Apr. 2021 This luxury moisturizer is known for its cold-cream texture and soothing formula that's infused with antioxidant-rich ingredients like sea kelp and lime tea to moisturize and fight free radical damage. Jennifer Hussein, Allure, 2 June 2022 Vitamin C works to infuse rich antioxidants into your skin, visibly brightening dark circles and protecting the delicate under-eye area from free radical damage. Grooming Playbook, The Salt Lake Tribune, 19 May 2022 Safeguarding skin from free radical damage, reducing inflammation and minimizing the appearance of fine lines and wrinkles are just a few of the precious metal’s perks. Celia Shatzman, Forbes, 2 May 2022 See More Word History First Known Use 1870, in the meaning defined above Medical Definition free radical noun : an especially reactive atom or group of atoms that has one or more unpaired electrons especially : one that is produced in the body by natural biological processes or introduced from outside (as in tobacco smoke, toxins, or pollutants) and that can damage cells, proteins, and DNA by altering their chemical structure
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