In this skin maintenance program, a dermatologist insists that wrinkles are not an inevitable aspect of aging. He claims that a high-protein, low-carbohydrate diet--that is rich with antioxidants (vitamin C, vitamin E, and beta carotene)--is essential for maintaining moist, elastic skin. He also advises readers to exercise, to avoid extreme fluctuations in body weight, and to average at least eight hours of sleep every night.