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Title: Collagen foil for cosmetic application
Abstract:
In the treatment of skin wherein an aqueous paste is applied to the skin, left in contact therewith for a period of time and thereafter removed, the improvement which comprises placing over the paste a foil containing at least about 3 percent of water soluble collagen by weight and having a water permeability of more than about 0.1 gram/dm.sup.2 /minute, whereby collagen is transported through the paste and is absorbed by the skin. Desirably the foil is about 0.01 to 0.03 mm thick and is cross-linked to an extent corresponding to that produced by about 0.1-0.5 percent by weight of glutardialdehyde applied in an acid medium. It may further contain a cosmetically active agent such as an amino acid, peptide, protein, hormone, placenta-extract, phosphatide, tissue-extract, fresh cells and vitamins. The paste may be dried by heating, producing shrinkage of the foil to increase contact with the skin.
Other info: Inventors: Braumer, Klaus (Weinheim, DE, US) Eckmayer, Zdenek (Heidelberg, DE, US) Application Number: 675363 Filing Date: 1976-04-09 Publication_date: 1978-12-26 Assignee: Firma Carl Freudenberg (Weinheim, DE) Primary Class(es): 424/401 128/DIG8, 514/774 Other Classes: US Patent Ref:
Other Refs: Other References: Bria et al., "Collagen and Gelatin and their Use in Cosmetics", Chem. Abst. vol. 79, 1973, p. 139607c. Kludas et al., "Cosmetic Creams Cont. Sol. Collagen", Chem. Abst., vol. 77, 1972, p. 105523r. | |