1 Sodium nitrate is a type of salt, naturally found in Chile and Peru. 2  It can also be created in a lab. 3  Sodium nitrite is also a type of salt, but is not found naturally and is created in a lab or as a byproduct of two other chemical reactions (i.e. when sodium nitrate is added to food and reacts with existing chemicals).
Eczema on the ear or in the ear can initially be caused by the skin being extra sensitive. Often the natural oil is stripped away through over cleaning or aggravated by getting water in the ear, wearing ear plugs, using cotton swabs or Q-tips or from the chemicals in shampoos, soaps and even hair spray.
Dry ears are itchy: A normal ear has a thin layer of natural body oil. Some ears produce no ear wax which results in dry and itchy ear skin. Sometimes people compulsively clean their ears and dry them out by removing the natural wax. Dry ears tend to accumulate flakes of dry dead skin.For people who just lack ear wax, occasional insertion of a few drops of vegetable oil can be helpful.ometimes people compulsively clean their ears and dry them out by removing the natural wax. Dry ears tend to accumulate flakes of dry dead skin. For people who just lack ear wax, occasional insertion of a few drops of vegetable oil can be helpful.