The delivery system comprises a first layer comprising at least one of at least one positively charged particle and a positively charged molecule. The second layer is in contact with the first layer. The second layer includes at least one of negatively charged particles and negatively charged molecules. At least one of the first and second layers comprises an active agent, such as an oral care agent. The active agent is incorporated into positively charged particles and / or negatively charged particles of each layer.給送システムが、少なくとも1つの正帯電粒子及び正帯電分子のうちの少なくも1つを含む第1の層を含む。第2の層が、第1の層と接触する。第2の層は、負帯電粒子及び負帯電分子のうちの少なくとも1つを含む。第1及び第2の層の少なくとも1つは、口腔ケア剤のような活性剤を含む。活性剤は、それぞれの層の正帯電粒子及び/又は負帯電粒子内に組み込まれる。
