Hand-held dispensing devices for dispensing and applying a substance to the skin of a host are described. The devices include a hollow body, a capsule mounted within the hollow body for containing the substance, a nozzle mounted within the hollow body communicating with the substance in the capsule,...http://www.google.fr/patents/US6978945?utm_source=gb-gplus-shareBrevet US6978945 - Dispensing device
