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AssigneeIndustria e Comercio de Cosmeticos Natura Ltda.
InventorsRoberto Alcantara Martins Zucchetti, Luciana Villa Nova Silva, Simoni Chitarra Souza, Simone Fanan, Jean-Luc Gesztesi, Luiz Gustavo Martins Matheus, Philippe Joseph Pommez, Karla Araujo Macian, Rodrigo Fuscelli Pytel
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The present invention is directed to a process for stabilizing antioxidant compounds comprising the step of adding to said compound, in an aqueous mean, at least an oxygen-removing compound, at least a metallic ion sequestering compound and at least an oxidation reaction reversing compound. The invention is particularly useful to stabilize antioxidant compounds such as levogyrous ascorbic acid (LAA), popularly known as “Vitamin C”, and the LAA associated with proantocianidines (OPC) for the preparation of pharmaceutical and cosmetic compositions.
A process for stabilizing antioxidant compounds selected from the group consisting of levogyrous acid (LAA), proanthocyanidines (OPCs) and mixtures thereof, comprising:
An aqueous composition comprising at least one antioxidant compound selected from the group consisting of levogyrous ascorbic acid (LAA), proanthocyanidines (OPCs) and mixtures thereof, an oxygen-removing compound, a metallic ion sequestering agent and an oxidation reaction reverting compound;
A two-phase aqueous cosmetic composition, comprising, in a first phase, at least one antioxidant compound selected from the group consisting of levogyrous ascorbic acid (LAA), proanthocyanidines (OPCs) and mixtures thereof, an oxygen-removing compound, a metallic ion sequestering agent and a reducing agent and, in a second phase, at least one hydrating compound;
Dependencies are inferred from the claim text.