How do waste product excreted from the blood via to the skin during sweating?

During sweating, the body regulates temperature by releasing sweat from sweat glands in the skin. This sweat consists primarily of water, but it also contains waste products like urea, salts, and other metabolites that are expelled from the blood. As blood circulates through the body, these waste products diffuse into the extracellular fluid surrounding the sweat glands, eventually being excreted through the skin's surface as sweat. This process helps maintain homeostasis while also aiding in the removal of certain waste substances.