Why wouldn't it be? It's useful in a lot of situations, being a safe form of nitrogen.Why is UREA included in Paul Mitchell clarifying shampoo ingredients?
Urea or carbamide is an organic compound with the chemical formula (NH2)2CO. The molecule has two amine (-NH2) residues joined by a carbonyl (-CO-) functional group.
Urea plays an important role in the metabolism of nitrogen-containing compounds by animals, and is the main nitrogen-containing substance in the urine of mammals. Being solid, colourless, odorless, neither acidic nor basic, highly soluble in water, and relatively non-toxic, urea is widely used in fertilizers as a convenient source of nitrogen. Urea is also an important feedstock for the chemical industry. The synthesis of this organic compound by Friedrich W枚hler 1828 from an inorganic precursor was an important milestone in the development of chemistry.
The terms urea and carbamide are also used for a class of chemical compounds sharing the same functional group RR'N-CO-NRR', namely a carbonyl group flanked by two organic amine residues. Example include carbamide peroxide, allantoin, and hydantoin. Ureas are closely related to biurets and related in structure to amides, carbamates, diimides, carbodiimides, and thiocarbamides.
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