Pretz is one of the brand of Parnell Pharmaceuticals. They have developed products to improve the quality of life for those with dryness of the skin and tissues of the body. Parnell is the first company dedicated to the research and development of new and innovative products to restore and maintain mucosal integrity. Employing a proprietary and patented technology, Parnell Pharmaceuticals products contain Yerba Santa, which contains natural anti-oxidants, mucopolysaccharides and glycoproteins.