An apparatus for delivering a bioactive material to a subterranean layer of a skin architecture is provided that includes a head including one or more needles that are operable to penetrate a stratum corneum of a skin. A bioactive material is disposed on one or more of the needles, whereby movement of...http://www.google.ca/patents/US20070073217?utm_source=gb-gplus-sharePatent US20070073217 - Apparatus, system, and method to deliver optimal elements in order to enhance the aesthetic appearance of the skin
