Commercial bread bakers often use additives, such as dough conditioners, to improve the texture, appearance, and shelf-life of their bread. Dough conditioners strengthen the gluten (protein portion of wheat) and starch (complex carbohydrate) in the dough. This prevents overmixing of the bread dough, which can easily happen when large quantities of dough are made at one time. Overmixed dough rises irregularly, and thus produces funny shaped, dense loaves. The addition of dough conditioners helps to ensure rounded, well shaped, light loaves. The most common dough conditioners are sodium stearoyl 2 lactylate, calcium stearoyl lactate, barley malt, ethoxylated and succinylated monoglycerides, and polysorbate 60.