Larry Weiss is the CEO and Founder of Symbiome (formerly Symbiome), a San Francisco skin microbiome company. Previously, he was Chief Medical Officer at AOBiome where he formulated and developed the Mother Dirt cosmetics, including AO Mist, the first live skin probiotic. He has an extensive background in natural products chemistry, microbiology, clinical medicine, dermatology, and pharmaceutical and cosmetic product development. He is board-certified in Anesthesiology, has an MD from Stanford University, and a BS in Biochemistry from Cornell University. He has multiple patents and publications in the areas of chemistry, electrophysiology, clinical pharmacology, and the microbiome. He is also a Co-Founder of CleanWell Company.