Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form
Reexamination Certificate
2007-02-27
2007-02-27
Davis, Ruth A (Department: 1651)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
C424S401000, C424S078020, C424S094400, C424S725000, C424S780000
Reexamination Certificate
active
10076418
ABSTRACT:
The invention concerns a composition for topical application for extemporaneous preparation, comprising ascorbic acid and a suitable support, the ascorbic acid being obtained by bringing at least one ascorbic acid precursor with the exception of its esters into contact with at least one enzyme that is capable of converting said precursor. It also concerns the use of one or more enzymes selected from L-galactono-1,4-lactone dehydrogenase, L-galactose dehydrogenase, L-sorbosone dehydrogenase, L-gulono-1,4-lactone oxidase and mixtures thereof, or of an extract comprising said enzyme, for the preparation of ascorbic acid for topical use, and a cosmetic method for treating the skin consisting of applying to the skin, either simultaneously or successively, at least one enzyme that can convert an ascorbic acid precursor into ascorbic acid, and at least one ascorbic acid precursor with the exception of its esters.
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Dalko Maria
Pereira Rui
"L'Oreal"
Buchanan & Ingersoll & Rooney PC
Davis Ruth A
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