A high concentration of the milk protein casein, to be exact.
Under a microscope, it's texture smooth in addition to being the first manmade fiber produced entirely without chemicals. These two qualities make it perfect for people with allergies or sensitive skin. The new material is also water efficient. Qmilch only uses a half gallon of water to make 2 pounds of fabric whereas cotton takes more than 10,000 liters of water to produce the same amount.