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2. Tooth whitening - Wikipedia

   en.wikipedia.org/wiki/Tooth_whitening

   However, it was not until 1989 that Haywood and Heymann published an article in support of this method. Carbamide peroxide with a shelf life of one to two years, as opposed to hydrogen peroxide with a shelf life one to two months, was seen as a more stable agent for whitening teeth. [84]

3. Ear drop - Wikipedia

   en.wikipedia.org/wiki/Ear_drop

   The shelf life of ear drops varies with products generally needing to be discarded within 4 weeks after opening. ... When carbamide peroxide ear drops are applied to ...

4. Teeth whitening: What is it, how to do it safely and how to ...

   www.aol.com/lifestyle/teeth-whitening-100042380.html

   Rhonda Kalasho, DDS, explains that these trays typically use low concentrations of peroxide-based gels, such as 15% hydrogen peroxide or 35% carbamide peroxide. You usually wear a whitening tray ...

5. Are Whitening Strips Bad for Your Teeth? Dentists Explain - AOL

   www.aol.com/whitening-strips-bad-teeth-dentists...

   Common ingredients in whitening strips include hydrogen and carbamide peroxide and sodium hydroxide. These all work to lift stains off the teeth, Dr. Camacho says. There have been concerns about ...

6. Hydrogen peroxide–urea - Wikipedia

   en.wikipedia.org/wiki/Hydrogen_peroxide–urea

   Hydrogen peroxide–urea (also called Hyperol, artizone, urea hydrogen peroxide, and UHP) is a white crystalline solid chemical compound composed of equal amounts of hydrogen peroxide and urea. It contains solid and water -free hydrogen peroxide, which offers a higher stability and better controllability than liquid hydrogen peroxide when used ...

7. You might be using the wrong mouthwash. Dentists ... - AOL

   www.aol.com/news/might-using-wrong-mouthwash...

   Or dentists may give their patients products containing another whitening ingredient, carbamide peroxide, the ADA explains. Cosmetic mouthwashes The other major category, cosmetic mouthwashes, can ...

8. Cerumenolytic - Wikipedia

   en.wikipedia.org/wiki/Cerumenolytic

   A cerumenolytic is an ear wax softening agent.Common cerumenolytics such as hydrogen peroxide and hydrogen peroxide - urea (also called carbamide peroxide) are topical preparations used to facilitate the removal of ear wax.

9. Urea - Wikipedia

   en.wikipedia.org/wiki/Urea

   The structure of the molecule of urea is O=C(−NH 2) 2.The urea molecule is planar when in a solid crystal because of sp 2 hybridization of the N orbitals. [8] [9] It is non-planar with C 2 symmetry when in the gas phase [10] or in aqueous solution, [9] with C–N–H and H–N–H bond angles that are intermediate between the trigonal planar angle of 120° and the tetrahedral angle of 109.5°.