Discussing existing techniques, ongoing research, new approaches, and basic concepts in the treatment of nail diseases, Topical Nail Products and Ungual Drug Delivery summarizes the current knowledge and represents a jumping-off point for creating novel techniques of drug delivery across the nail.A growing area of pharmaceutical research, the search for efficient delivery techniques that can cross the nail barrier has yielded several effective strategies, brought together in this book.Topics Include Nail anatomy, physiology, diseases, and treatment Permeability of the nail plate Topical nail formulations Approaches to enhance ungual and trans-ungual drug delivery In vitro and in vivo models to evaluate topical nail formulations Nail sampling techniques Bioengineering of the nail Trans-ungual iontophoresis Pharmacokinetics of drugs in the nail apparatus Onychopharmacokinetics: proposed model insight Photodynamic therapy of nail diseases The nail as a surrogate for investigating drug use