Azelaic acid is a natural product derived from cereal grains. It has the ability to inhibit pathogens; in other words, it is actually a natural antibiotic. The use of this substance clears your skin and combats inflammation. Although it belongs to the class of acids, you should not fear any negative effects on your skin. In small amounts, certain fungi (e.g. Pityrosporum ovale) and yeast that are able to live on human skin can produce azelaic acid. Furthermore, azelaic acid has the unique ability to increase the effects of minoxidil, thereby increasing the efficiency of the fight against excessive hair loss.