Urea, also known as urea and carbonamide, has a chemical formula of CH4N2O. It is an organic compound composed of carbon, nitrogen, oxygen, and hydrogen. One of the simplest organic compounds is the main component of protein metabolism and decomposition in mammals and some fish. Nitrogen end product.

1 Urea is a high-concentration nitrogen fertilizer that does not leave any harmful substances in the soil, and long-term application has no adverse effects. Animal husbandry can be used as feed for ruminants. 2 Urea is a very useful moisturizing ingredient. It exists in the stratum corneum of the skin and is the main component of the skin's natural moisturizing factor NMF. It has the effect of moisturizing and softening the keratin, which can prevent the stratum corneum from clogging the pores and improve the problem of acne. 3 Urea is a raw material for the manufacture of two main classes of materials: urea-formaldehyde resins and urea-melamine-formaldehyde used in marine plywood. Urea is also used in the production of various acylureas and urethanes for use as sedatives and hypnotics. 4 Urea has the ability to trap many organic compounds in the form of clathrates. This behavior can be used to separate mixtures, and has been used in the production of aviation fuel and lubricating oils, and in the separation of paraffin.