As for this invention, oil 30%w/w and the ion surface active agent to be many and the surface active agent and as for w/w ratio of oil/the non ion surface active agent is contained a little surface active agent type it is higher than 1, the solubilizer component which is not the surface active agent and is not VOC chemical compound, the VOC non- containing colorless discernment being clear oil-in-water micro emulsion which the water at least contains 60% is supplied to 10%w/w. This invention regards also the product which it is related to the aforementioned micro emulsion.本発明は、油30%w/wと、イオン界面活性剤を多くと非イオン界面活性剤を少しとを含有する界面活性剤と、油/界面活性剤系のw/w割合は1より高く、界面活性剤でもなくVOC化合物でもない可溶化剤成分を10%w/wまでと、水少なくとも60%とを含有するVOC不含無色明澄水中油型マイクロエマルションを供給する。本発明は、前記マイクロエマルションに関連した製品にも関する。