单词	retinoid
释义	retinoid noun ret·​i·​noid ˈre-tə-ˌnȯid  : any of various synthetic or naturally occurring analogs of vitamin A Example Sentences Recent Examples on the Web Whiteheads and blackheads, for example, are often treated via a retinoid or benzoyl peroxide, azelaic acid, or salicylic acid. Leah Groth, Health.com, 14 Sep. 2020 Retinol is a form of retinoid that comes stacked with vitamin A and helps skin recover from signs of aging and even acne. Grooming Playbook, The Salt Lake Tribune, 24 May 2022 For example, most wrinkle cream or serum comes with a retinoid ingredient, but both lose their effectiveness when mixed or added with AHAs or benzoyl peroxide. Grooming Playbook, The Salt Lake Tribune, 24 May 2022 The concept is novel in that tretinoin and BPO haven't been used together in the same formula previously, but the concept of retinoid and benzoyl peroxide isn't exactly new. Kirbie Johnson, Allure, 1 Apr. 2022 To begin with, apply your retinoid two to three times per week and gradually build up to every night or every other night, pair it with an acne-friendly moisturizer to reduce irritation, and be diligent about applying sunscreen in the morning. Krissy Brady, SELF, 7 Dec. 2021 In addition to Retin-A and Tazorac, many experts also recommend over-the-counter products like Differin that contain adapalene (a synthetic retinoid) as a main ingredient for spot treating acne. SELF, 30 Dec. 2021 First, eliminate any products that may cause irritation, and consider using a retinoid. Kiana Murden, Vogue, 26 Jan. 2022 Like retinol, this compound is a naturally occurring retinoid that the body converts to retinoic acid. Sarah Jacoby, SELF, 27 Dec. 2021 See More Word History First Known Use 1976, in the meaning defined above Medical Definition retinoid noun ret·​i·​noid ˈret-ᵊn-ˌȯid  : any of various synthetic or naturally occurring analogs of vitamin A
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