Deodorant composition comprising a water-soluble zinc salt as odor-absorbing agent

• US 6,632,421 B2
• Filed: 05/02/2001
• Issued: 10/14/2003
• Est. Priority Date: 10/16/1995
• Status: Expired due to Fees

• Current Assignee: L'Oreal SA
• Original Assignee: L'Oreal SA
• Inventors: Ascione, Jean-Marc, Rollat-Corvol, Isabelle, Forestier, Serge
• Primary Examiner(s): Dodson, Shelley A.
• Application Number:
  US09/846,353
• Publication Number:
  US 20020127193A1
• Time in Patent Office: 895 Days
• Field of Search: 424/401, 424/65, 424/67
• US Class Current: 424/65
• CPC Class Codes: A61K 8/06 Emulsions
• CPC Class Codes: A61K 8/23 Sulfur; Selenium; Tellurium; Compounds thereof
• CPC Class Codes: A61K 8/27 Zinc; Compounds thereof
• CPC Class Codes: A61K 8/365 Hydroxycarboxylic acids; Ketocarboxylic acids
• CPC Class Codes: A61K 8/463 containing sulfuric acid derivatives, e.g. sodium lauryl sulfate
• CPC Class Codes: A61K 8/4913 having five membered rings, e.g. pyrrolidone carboxylic acid
• CPC Class Codes: A61K 8/585 Organosilicon compounds
• CPC Class Codes: A61K 8/891 saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
• CPC Class Codes: A61K 8/894 modified by a polyoxyalkylene group, e.g. cetyl dimethicone copolyol
• CPC Class Codes: A61Q 15/00 Anti-perspirants or body deodorants deodorisation of air A61L9/00

Abstract

The present invention relates to a deodorant composition, in particular a cosmetic composition, comprising, as odor-absorbing agent, at least one water-soluble zinc salt, and preferably zinc pyrrolidonecarboxylate, to the use of the composition for the manufacture of cosmetic products intended for human topical application, in particular deodorants, to a process for treating human axillary smells, and to the use of a water-soluble zinc salt as, preferably sole, an odor-absorbing agent in a deodorant composition.

The composition is particularly intended for formulations comprising an aqueous phase: aqueous lotions, emulsions and preferably water-in-silicone emulsions.

Claims

1. A deodorant composition in the form of a water-in-silicone emulsion, comprising at least one water-soluble zinc salt in an amount effective to absorb odor and further comprising water in an amount sufficient to form said emulsion.

2. A composition according to claim 1, wherein said at least one water-soluble zinc salt is a zinc salt of an organic or inorganic acid having a solubility of at least 0.3% by weight, expressed as Zn ion.

3. A composition according to claim 1, wherein said at least one water-soluble zinc salt is a zinc pyrrolidonecarboxylate.

4. A composition according to claim 1, wherein said at least one water-soluble zinc salt is selected from zinc sulphate, zinc chloride, zinc lactate, zinc gluconate and zinc phenolsulphonate.

5. A composition according to claim 1, wherein said at least one water-soluble zinc salt is present in a concentration by weight as Zn ion ranging from 0.01 to 10% with respect to the total weight of the composition.

6. A composition according to claim 5, wherein said at least one water-soluble zinc salt is present in a concentration by weight as Zn ion ranging from 0.1 to 5% with respect to the total weight of the composition.

7. A composition according to claim 6, wherein said at least one water-soluble zinc salt is present in a concentration by weight as Zn ion ranging from 0.1 to 2%.

8. A method of preparing a cosmetic product intended for human topical application, comprising the step of including in said product a composition as defined in claim 1.

9. A method according to claim 8, wherein said product is a deodorant.

10. A method for treating human axillary smells, comprising the step of applying an effective amount of a composition as defined in claim 1 on the human axillary surface.

11. A composition according to claim 1, wherein said water-soluble zinc salt is the sole odor absorbing agent in said composition.