This illustrated step-by-step guide describes the application of percutaneous collagen induction, also known as medical needling. Combining impressive case histories, anatomical illustrations, and scientific data, the authors demonstrate the efficacy of the method in rejuvenating scars, lines, sagging skin, and stretch marks. Chapters cover the basics of the technique and indications for its use as well as each stage of treatment and patient management. The authors also highlight the latest devices and provide expert practical tips for patient treatment.