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While a good whitening toothpaste can work to keep stains away on a day-to-day basis, these more potent kits typically use strips, trays, or a pen to deliver their whitening agents—usually hydrogen peroxide or carbamide peroxide—to your teeth.—
Sara Coughlin,
Allure,
8 Sep. 2026 Unlike strips, these usually combine technology, like LED lights, with active ingredients like hydrogen peroxide and carbamide peroxide that do the actual whitening.—
Iman Balagam,
Vogue,
13 Apr. 2025 However, always make sure to test patch before trying a new skincare product.
Urea, also known as carbamide, is naturally produced by the liver.—
Sherri Gordon,
Health,
19 Mar. 2025 The formula is made with carbamide peroxide, which is more gentle on the teeth and gums compared to other whitening methods.—
Jessie Quinn,
Peoplemag,
15 May 2024 See All Example Sentences for carbamide