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Adsorption of sebum

  • US 4,000,317 A
  • Filed: 05/06/1974
  • Issued: 12/28/1976
  • Est. Priority Date: 11/22/1972
  • Status: Expired due to Term
First Claim
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1. A method of slowing the development of oily skin which comprises applying to skin which normally becomes oily an oil-free suspension of pyrogenic colloidal silica in an aqueous-alcoholic medium, the particles of silica having at least 90% thereof with diameters between 2 and 20 millimicrons, said suspension containing from 0.5 to 10% by weight of the pyrogenic colloidal silica, 20 to 70% by weight water, 25 to 75% by weight of an aliphatic monohydric alcohol having from 2 to 4 carbon atoms, and 0.2 to 5% by weight of an organic thickening agent, said suspension being applied to the skin in a layer of a thickness corresponding to from 5 ×

  • 10-5 to 1 ×

    10-5 gram of silica per square centimeter of skin, said suspension being free of oil.

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