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

• US 20020127193A1
• Filed: 05/02/2001
• Published: 09/12/2002
• Est. Priority Date: 10/16/1995
• Status: Active Grant

• Current Assignee: L'Oreal SA
• Original Assignee: L'Oreal SA
• Inventors: Ascione, Jean-Marc, Rollat-Corvol, Isabelle, Forestier, Serge
• Granted Patent: US 6,632,421 B2
• Time in Patent Office: Days
• US Class Current: 424/67
• 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 an 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.

3. 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.

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

5. 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.

9. 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.

10. A composition according to claim 9, 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.

11. A composition according to claim 10, 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%.

12. A composition according to claim 1, wherein said emulsion is a water-in-silicone emulsion.

13. A composition according to claim 1, wherein said emulsion comprises a dispersed aqueous phase comprising said water-soluble zinc salt and a continuous silicone fatty phase comprising (i) at least one volatile dimethicone and (ii) at least one silicone emulsifying agent, wherein said at least one silicone emulsifying agent is optionally dispersed in a volatile dimethicone, and wherein said at least one silicone emulsifying agent is selected from the polydiorganosiloxanes of following formulae (I) and (II):

14. A composition according to claim 13, wherein said silicone emulsifying agent is a mixture of cyclomethicone and of dimethicone copolyol.

15. A composition according to claim 13, wherein said at least one polydiorganosiloxane of formula (I) and (II) is present in a concentration by weight ranging from 0.1 to 20%, and wherein said aqueous phase represents an amount by weight ranging from 15 to 90% and said silicone fatty phase represents an amount by weight ranging from 10 to 85% with respect to the total weight of the composition.

16. 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.

17. A method according to claim 16, wherein said product is a deodorant.

20. 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.

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

2. A deodorant composition having at least 2 phases and comprising at least one water-soluble zinc salt.

6. A composition according to claim 2, 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.

7. A composition according to claim 2, wherein said at least one water-soluble zinc salt is a zinc pyrrolidonecarboxylate.

8. A composition according to claim 2, wherein said at least one water-soluble zinc salt is selected from zinc sulphate, zinc chloride, zinc lactate, zinc gluconate and zinc phenolsuphonate.

23. A composition according to claim 2, wherein said water-soluble zinc salt is the sole odor absorbing agent in said composition.

18. A method of preparing a deodorant composition in the form of an emulsion comprising the step of including in said composition at least one water-soluble zinc salt in an amount effective to absorb odor and water in an amount effective to form an emulsion.

19. A method of preparing a deodorant composition comprising the step of including in said composition zinc pyrrolidonecarboxylate in an amount effective to absorb odor.

21. A deodorant composition comprising zinc pyrrolidonecarboxylate in an amount effective to absorb odor.