For a solution more potent than a cream, but less invasive than a traditional face-lift, Dr. Patricia Wexler has the answer. “I’m a great fan of Ultherapy because it works,” says the famed New York-based dermatologist to the stars. The treatment uses ultrasound wave technology to encourage collagen production (the building blocks of plumpness), and Dr. Wexler’s also sworn by it personally for a decade. (Here’s the truth about what collagen really does for your skin.) “It’s a precise non-surgical procedure, the only one I know of where you can visualize the exact placement of the energy and the level of skin where you’re placing it,” she says.