SI is a part of Miyoshi's Silicone Treatment line in the cosmetic market. Silicone treatments can provide lubricity, which translates to better spreadability on the skin, and the unique silicone properties of strong hydrophobicity to impart long lasting properties to the pigments. This product has good color development, strong water repellency, and has a light and smooth feel on the skin. It is recommended for powders, dual (2-way) foundations, and powder eyeshadow.

SI是化妆品市场中三好有机硅处理系列的一部分。有机硅处理可以提供润滑性，这可以在皮肤上获得更好的铺展性，并具有独特的强疏水性有机硅特性，可以赋予颜料持久的性能。该产品具有良好的颜色发展，强大的拒水性，并且对皮肤具有光滑平滑的感觉。推荐用于粉末，双（2路）基础和粉末眼影。