An active molecule delivery system whereby active molecules can be released on demand and/or a variety of different active molecules can be delivered from the same system and/or different concentrations of active molecules can be delivered from the same system. The active delivery system includes a plurality of microcells, wherein the microcells are filled with a medium including active molecules. The microcells include an opening, and the opening is spanned by a porous diffusion layer. The microcell arrays may be loaded with different active ingredients, thereby providing a mechanism to deliver different, or complimentary, active ingredients on demand.一種活性分子遞送系統，藉其可隨選釋放活性分子及/或可從同一系統遞送各種不同的活性分子及/或可從同一系統遞送濃度不同的活性分子。該活性分子遞送系統包括複數個微胞，其中該微胞被填充包括活性分子之介質。該微胞包括開口，且該開口被多孔性擴散層橫跨。該微胞陣列可載有不同的活性成分，因而提供隨選遞送不同或輔助的活性成分之機構。
