Succeeding to the electron-doping processes of carbon nanostructures, chemical methods devoted to the hole-doping of the latter have significantly developed over the past ten years. Intercalation chemistry remains a top-rated technique in this purpose, among the variety of available chemical doping schemes. A review of the p-type doping of fullerenes and nanotubes by this method is exposed, which also includes a wide range of potential applications and prospects regarding the materials thus obtained.