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Allantoin is a chemical compound with formula C 4 H 6 N 4 O 3.It is also called 5-ureidohydantoin or glyoxyldiureide. [1] [2] It is a diureide of glyoxylic acid.Allantoin is a major metabolic intermediate in most organisms including animals, plants and bacteria, though not humans.
Ingredients of cosmetic products are listed following International Nomenclature of Cosmetic Ingredients (INCI). These INCI names often differ greatly from systematic chemical nomenclature or from more common trivial names. The below tables are sorted as follows:
Some people have a contact allergy to imidazolidinyl urea causing dermatitis. [3] Such people are often also allergic to diazolidinyl urea. In addition to being an allergen, it is a formaldehyde releaser, since it generates formaldehyde slowly as it degrades.
Cosmetics are composed of mixtures of chemical compounds derived from either natural sources or synthetically created ones. [1] Cosmetics have various purposes, including personal and skin care. They can also be used to conceal blemishes and enhance natural features (such as the eyebrows and eyelashes). Makeup can also add colour to a person's ...
In the U.S., under the Food, Drug, and Cosmetic Act and the Fair Packaging and Labeling Act, certain accurate information is a requirement to appear on labels of cosmetic products. [6] In Canada, the regulatory guideline is the Cosmetic Regulations. [7] Ingredient names must comply by law with EU requirements by using INCI names. [8]
Castor oil and its derivatives are found in many cosmetics as it is "non-comedogenic" (does not exacerbate or contribute to acne). [3]Cerebrosides (cells from the nervous systems of cattle or swine) were once used in some high-end skin-care products to increase moisture retention and to create a smooth skin surface, [4] however the BSE controversy has put an end to this practice.
Glow & Lovely (formerly Fair & Lovely) is an Indian skin-lightening cosmetic product of Hindustan Unilever introduced to the market in India in 1975. Glow & Lovely is available in India, Bangladesh, Malaysia, Indonesia, Singapore, Brunei, Thailand, Sri Lanka, Pakistan, Mauritius and other parts of Asia and is also exported to other parts of the world, such as the West, where it is sold in ...
Hydantoin can also be synthesized either by heating allantoin with hydroiodic acid or by "heating bromacetyl urea with alcoholic ammonia". [6] The cyclic structure of hydantoins was confirmed by Dorothy Hahn 1913. [7] Of practical importance, hydantoins are obtained by condensation of a cyanohydrin with ammonium carbonate. Another useful route ...