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    • 1. 发明申请
    • Skin cosmetic
    • 皮肤化妆品
    • US20060034788A1
    • 2006-02-16
    • US11196521
    • 2005-08-04
    • Masaakira HorinoToshiya MatsubaraMasaharu TanakaTaizo MiyoshiMasaki Inoue
    • Masaakira HorinoToshiya MatsubaraMasaharu TanakaTaizo MiyoshiMasaki Inoue
    • A61K8/25
    • A61Q1/02A61K8/25A61K2800/412A61Q1/12A61Q19/08
    • There is provided a cosmetic, particularly a skin cosmetic, excellent in imparting transparency (transparent feeling) to the skin, conditioning the skin texture and making wrinkles and hair follicles imperceptible when applied. The cosmetic comprises a powder of porous spherical silica having an average particle size (based on volume) from 3.0 to 20 μm, a maximum particle size of 50 μm or smaller, and a pore volume from 1.5 to 3.0 cm3/g, wherein the powder is characterized in that the minimum value of dlog (storage elasticity)/dlog (shear stress) is −10 or more, when 40 g of squalane is added to 15 cm3 of apparent volume of said powder of porous spherical silica, the resulting paste is charged in thickness of 2 mm between parallel plates of 2.5 cm diameter, one of the plates is subjected to an angular vibration to another in a frequency of 2 Hz, dynamic viscoelasticity is measured by increasing an average shear stress between the plates from 10 Pa to 10 kPa and correlation between log (shear stress) versus log (storage elasticity) is measured.
    • 提供了赋予皮肤透明度(透明感)优异的化妆品,特别是皮肤化妆品,其在使用时不易察觉,调理皮肤纹理并使皱纹和毛囊变得不可察觉。 化妆品包括平均粒度(基于体积)为3.0〜20μm,最大粒径为50μm以下,孔体积为1.5〜3.0cm 3的多孔性球状二氧化硅粉末, SUP> / g,其中粉末的特征在于当将40g角鲨烷加入15cm 3 / sup时,dlog(储存弹性)/ dlog(剪切应力)的最小值为-10或更大 所述多孔球形二氧化硅粉末的表观体积,将所得糊料以2.5cm直径的平行板之间的厚度为2mm填充,其中一块板以2Hz的频率进行另一个振动,动态 通过将板之间的平均剪切应力从10Pa增加到10kPa来测量粘弹性,并测量log(剪切应力)对log(存储弹性)之间的相关性。