The invention provides an organic silicone microparticle,which can fully meet the high requirements for practical use in recent years such as, for example, improvements for resin compositions in their optical properties such as total light transmittance and haze, and thermal coloring property, improvements for cosmetic materials in their usability (stretching and spreading when used) and feelings of use (sticky feel, rough feel and sustainability), and improvements for coating compositions in their matting property and touch feel； a method for producing the organic silicone microparticle； and a cosmetic material, a resin composition and a coating composition containing the organic silicone microparticle.The organic silicone microparticle of the invention as a whole substantially exhibits a tetrahedron shape that has a concave portion (11) with an opening part of approximately round shape formed on each side of the tetrahedron, and each has an average maximum diameter (L) of 0.5-20 μm (this average value is obtained from 20 organic silicone microparticles arbitrarily selected from the scanning electron microscope image thereof).本發明係提供能充分因應近年在實際使用情況中的高度要求，例如就樹脂組成物而言為全光線穿透率與霧值等光學特性更加提升、且耐熱著色性更加提升、就化妝料而言為使用性(使用時的鋪散與推展)更加提升、且使用感(黏膩感、凹凸感、持續性)更加提升、以及就塗料組成物而言為消光性與觸感更加提升的有機聚矽氧微粒子、該有機聚矽氧微粒子之製造方法、含該有機聚矽氧微粒子之化妝料、樹脂組成物及塗料組成物。本發明的有機聚矽氧微粒子，係整體呈現在相當於四面體各面的面上，形成有開口部呈略圓形之凹部(11)的形狀，且微粒子各個外形的最大徑(L)平均值係在0.5~20μm範圍內(惟，平均值係針對從有機聚矽氧微粒子的掃描式電子顯微鏡照片影像中抽取出之任意20個的平均值)。
