Electrolyte content w/o emulsions for treating irritated/sensitive skins
AssigneeLa Roche Posay Laboratoire Pharmaceutique
InventorVéronique Burnier
Life of this patent
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Abstract
Stable, topically applicable water-in-oil emulsions, well suited for therapeutically treating irritated/sensitive skins and having high electrolyte content, comprise (a) at least 26 by weight of at least one water-soluble metal salt, (b) at least one hydrophobic gelling agent, (c) less than 5% by weight of at least one emulsifying agent, and, advantageously, at least one biologically active agent, for example an active agent that modulates skin differentiation and/or proliferation and/or pigmentation, an anti-inflammatory, an antibacterial, an antifungal, etc., and/or at least one keratolytic active agent, neuropeptide antagonist and/or inflammation-mediator antagonist.
Claims32
A stable water-in-oil emulsion suited for topical application to irritated/sensitive skins and having a high electrolyte content, comprising (a) at least 2% by weight of at least one water-soluble metal salt, (b) at least one hydrophobic gelling agent which is selected from the group consisting of a modified clay, a hydrophobic silica and a glycol ester derivative of a fatty acid, and (c) less than 5% by weight of at least one emulsifying agent wherein said at least one emulsifying agent comprises at least one glycerol ester and at least one silicone polymer.
A stable water-in-oil emulsion suited for topical application to irritated/sensitive skins and having a high electrolyte content, comprising:
- (a) at least one water-soluble metal salt, in an amount of at least 2% by weight;
- (b) at least one hydrophobic gelling agent comprising at least one member selected from the group consisting of a modified clay, a hydrophobic silica and a glycol ester of a fatty acid, in an amount of from 0.01% to 5% by weight;
- and
- (c) at least one glycerol ester emulsifying agent and at least one silicone polymer emulsifying agent, in a combined amount effective to provide a stable emulsion, said amount being less than 5% by weight.
Dependencies are inferred from the claim text.