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  2. Tooth whitening - Wikipedia

    en.wikipedia.org/wiki/Tooth_whitening

    The bleaching agent is either carbamide peroxide, which breaks down in the mouth to form hydrogen peroxide, or hydrogen peroxide itself. The bleaching gel typically contains between 10% and 44% carbamide peroxide, which is roughly equivalent to a 3% to 16% hydrogen peroxide concentration.

  3. Urea-containing cream - Wikipedia

    en.wikipedia.org/wiki/Urea-containing_cream

    Urea, also known as carbamide-containing cream, [clarification needed] is used as a medication and applied to the skin to treat dryness and itching such as may occur in psoriasis, dermatitis, or ichthyosis. [1] [2] [3] It may also be used to soften nails. [3] In adults side effects are generally few. [4] It may occasionally cause skin ...

  4. Peroxide - Wikipedia

    en.wikipedia.org/wiki/Peroxide

    The peroxide group is marked in blue. R, R 1 and R 2 mark hydrocarbon moieties. The most common peroxide is hydrogen peroxide (H 2 O 2), colloquially known simply as "peroxide". It is marketed as solutions in water at various concentrations. Many organic peroxides are known as well. In addition to hydrogen peroxide, some other major classes of ...

  5. Peracetic acid - Wikipedia

    en.wikipedia.org/wiki/Peracetic_acid

    This is achieved by the action of bleach activators, such as tetraacetylethylenediamine and sodium nonanoyloxybenzenesulfonate, upon hydrogen peroxide formed from sodium percarbonate in water. The peracetic acid is a more effective bleaching agent than hydrogen peroxide itself.

  6. Sodium percarbonate - Wikipedia

    en.wikipedia.org/wiki/Sodium_percarbonate

    Sodium percarbonate or sodium carbonate peroxide is a chemical substance with empirical formula Na 2 H 3 C 2 O 6. It is an adduct of sodium carbonate ("soda ash" or "washing soda") and hydrogen peroxide (that is, a perhydrate) whose formula is more properly written as 2 Na 2 CO 3 · 3 H 2 O 2. It is a colorless, crystalline, hygroscopic and ...

  7. Diethyl ether peroxide - Wikipedia

    en.wikipedia.org/wiki/Diethyl_ether_peroxide

    Diethyl ether hydroperoxide forms polymers known as diethyl ether peroxide, or ethylidene peroxide: The peroxide is a colorless oil that is an extremely brisant and friction sensitive explosive material , however the polymeric materials are solid making them more dangerous as evaporation of the volatile diethyl ether can leave thin films of ...

  8. COVID-19 - Wikipedia

    en.wikipedia.org/wiki/COVID-19

    Common side effects of COVID‑19 vaccines include soreness, redness, rash, inflammation at the injection site, fatigue, headache, myalgia (muscle pain), and arthralgia (joint pain), which resolve without medical treatment within a few days. [216] [217] COVID‑19 vaccination is safe for people who are pregnant or are breastfeeding. [218]