Two kinds of flax are grown for oil, which is pressed from the seeds. The common flax yields the industrial linseed oil.
Linseed oil has many uses, from paints to linoleum, oilcloth, soap, and ink.
Linseed oil contains high levels of linolenic acid, which makes it dry quickly but also causes it to be subject to rancidity. The other type of flax is called solin. The seeds of most flax cultivars are dark brown. Omega' flax was developed for the food industry. It produces oil high in linolenic acid, as do the industrial types, but has light colored seeds.