1. Gelling Agent / Thickener – Increases the viscosity by thickening the liquid to give it more texture
Urea, also known as carbamide, serves an important role in the metabolism of nitrogen-containing compounds by animals and is the main nitrogen-containing substance in the urine of mammals. It is a colorless, odorless solid, highly soluble in water, and practically non-toxic.
Urea is widely used in fertilizers as a source of nitrogen and is an important raw material for the chemical industry. In medical use, urea-containing creams are used as topical dermatological products to promote rehydration of the skin. It is also an ingredient in some skin cream, moisturizers, hair conditioners, and shampoos. In food industry with E number 927B, it acts as a yeast nutrient for fermented products, and as a browning agent that induces browning for commercially baked goods. It is used in beer, wine, and commercially made baked goods.
It is approved to use as food additive in EU and generally recognized as safe food substance in US.
Scientific References :
1. PubChem: https://pubchem.ncbi.nlm.nih.gov/compound/1176
Regulatory References :
1. EU Approved Food Additive 
2. US FDA Generally Recognized As Safe (GRAS)