Joseph C. Gretzula, D.O., F.A.A.D. is a Board-Certified Dermatologist with over 39 years of experience in South Florida. He is the Director of Boynton Beach Dermatology and the Founder and Medical Director of Beauty Within, a Wellness and Anti-aging Center, created to transform traditional medicine to achieve healthy human longevity in a more personalized manner.

Dr. Gretzula is board-certified, recognized by the American Academy of Dermatology and is internationally recognized as an expert in aesthetics, lasers, and skin cancer. He is a key opinion leader for both InMode and UltraClear, utilizing the latest technologies in revolutionizing facial rejuvenation. With his designation,Beauty Within has become a top-tier head-to-toe remodeling center that is held to the highest standards for aesthetic treatments.

Beyond his dermatology training at the University of Miami, Dr. Gretzula possesses a Degree in Pharmacy, having graduated from the Philadelphia College of Pharmacy and Science. He incorporates that knowledge, as well as his knowledge of wellness and antiaging, into his practice providing a more precise and personalized form of medicine incorporating mindful meditation, nutrition, peptide therapy, sleep and stress management to promote overall health and anti aging benefits. Beauty Within is also a research-oriented facility studying the latest technologies including the development of an algorithm to predict facial aging. Additionally, Dr. Gretzula serves on the Medical Advisory Board of ZEO Scientifix studying exosomes and their relationship in skin aging and aesthetics.

Dr. Raja Sivamani is a board-certified dermatologist and practices as an integrative dermatologist at Pacific Skin Institute. He is an Adjunct Associate Professor of Clinical Dermatology at the University of California, Davis and Director of Clinical Research and the Clinical Trials Unit.He is also an Adjunct Assistant Professor in the Department of Biological Sciences at the California State University, Sacramento and an Associate Professor of Dermatology at California Northstate University, College of Medicine.He engages in clinical practice as well as both clinical and translational research that integrates bioengineering, nutrition, cosmetics, and skin biology. With training in both Allopathic and Ayurvedic medicine, he takes an integrative approach to his patients and in his research.He has published over 100 peer-reviewed research manuscripts, 10 textbook chapters, and a textbook entitled Cosmeceuticals and Active Cosmetics, 3rd Edition with a passion for expanding the evidence and boundaries of integrative medicine for skin care.