There’s a reason Madonna looks so young, and it’s not just genes. With offices in New York and Miami, dermatologist Dr. Fredric Brandt treats everyone from celebrities (including the Material Girl herself) to beauty editors, and is known around the world for his cutting-edge, effective techniques and fountain-of-youth treatments. Aside from his coveted line of Dr. Brandt products, he also shares his expertise in two books: Age-Less: The Definitive Guide to Botox, Lasers, Peels and Other Solutions for Flawless Skin and 10 Minutes, 10 Years.