Ethocyn's efficacy has been proven in over 19 years of research and over $20 million in testing and development. In medically published punch biopsy clinical studies, "Ethocyn caused (p=.001) tested individuals, between 40-72 years of age, to regain the important skin elastin fiber content of 20 year old skin" (Richard A. Strick, MD. Clinical Prof. of Dermatology, UCLA School of Medicine). Independent of patients' initial elastin fiber content, within 8 weeks of their twice daily applications, Ethocyn users showed an average of 100% improvement in their skin's elastin content, and restoration of skin's firmness and snapback quality.