Leave the skin breathe, this is the philosophy of the revolutionary Karin Herzog brand. On the back of this fabulous brand, is Dr. Paul Herzog, who dedicated his career to the study of artificial respiration and extraordinary and curative benefits of oxygen in the human body. Dr. Herzog was intended to secure and stabilize the volatile oxygen molecule in emulsions so that he could use in clinical skin conditions. In 1975, after discovering the revolutionary formula to incorporate oxygen in topical formulations, in association with his wife, Karin Herzog developed the first and only brand capable of using active oxygen in the treatment of skin aging! Thus was born the brand Karin Herzog, formulated with elements recognized by the skin, with high quality and control, and a transcendent effectiveness! Note: Karin Herzog products are not tested on animals, nor do they have in their composition extracts or derived from animals!