Dr. Fredric Sheldon Brandt, the author and dermatologist behind Dr. Brandt, tragically took his life in 2015. He was mourned by a long list of devoted patients and clients, including Madonna. Hailed as the "Baron of Botox" and the "King of Collagen," Dr. Brandt leaves behind an empire of skin care products that to this day have a cult following, such as the Dr. Brandt Pores No More Pore Refiner Primer, $45.