Method for moisturizing human skin using dihydroxypropyltri(C 1 -C 3 alkyl) ammonium salts

• US 8,124,063 B2
• Filed: 10/25/2004
• Issued: 02/28/2012
• Est. Priority Date: 10/25/2004
• Status: Active Grant

• Current Assignee: Unilever Home & Personal Care Usa Division Of Conopco, Inc.
• Original Assignee: Conopco (Unilever PLC)
• Inventors: Harichian, Bijan, McManus, Richard Loren, Rosa, Jose Guillermo
• Primary Examiner(s): GHALI, ISIS A D
• Application Number:
  US10/972,483
• Publication Number:
  US 20060088495A1
• Time in Patent Office: 2,682 Days
• Field of Search: 424/78.02, 424/78.03
• US Class Current: 424/78.02
• CPC Class Codes: A61K 8/416 Quaternary ammonium compounds A61K8/35 takes precedence
• CPC Class Codes: A61Q 1/02 Preparations containing skin colorants, e.g. pigments preparations in powder form A61Q1/12
• CPC Class Codes: A61Q 11/00 Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
• CPC Class Codes: A61Q 15/00 Anti-perspirants or body deodorants deodorisation of air A61L9/00
• CPC Class Codes: A61Q 19/00 Preparations for care of the skin
• CPC Class Codes: A61Q 19/007 Preparations for dry skin
• CPC Class Codes: A61Q 19/08 Anti-ageing preparations
• CPC Class Codes: A61Q 19/10 Washing or bathing preparations
• CPC Class Codes: A61Q 5/02 Preparations for cleaning the hair
• CPC Class Codes: A61Q 5/12 Preparations containing hair conditioners

Abstract

A personal care product is provided which includes a composition containing dihydroxypropyltri(C₁-C₃ alkyl)ammonium salt in a carrier. The composition is packaged for delivery to a consumer and includes instructions printed on or associated with the packaging indicating topical use of the composition on skin, hair or the oral mucosae. Particularly useful is dihydroxypropyltrimonium chloride which operates as a humectant to moisturize both at high and low relative humidity environments.

Claims

1. A method for moisturizing hands comprising topically applying to the hands of a person suffering from dry skin condition at 20% or less relative humidity a personal care composition comprising from about 0.1 to about 30% by weight of dihydroxypropyltri(C₁-C₃ alkyl)ammonium salt in a cosmetically acceptable carrier.

2. The method according to claim 1 wherein the salt is present in an amount from about 1.5 to about 12% by weight of the composition.

3. The method according to claim 1 wherein the salt is dihydroxypropyltrimonium chloride.

4. The method according to claim 1 wherein the salt is present in an amount from 1.5 to about 12% by weight of the composition.

5. The method according to claim 1 wherein the composition is a leave-on skin lotion or cream.

6. A method for moisturizing human skin body parts comprising topically applying to the human skin body parts of a person suffering from dry skin under conditions of 20% or less relative humidity a personal care composition comprising from 1.5 to about 12% by weight of dihydroxypropyltri(C₁-C₃ alkyl)ammonium salt in a cosmetically acceptable carrier and thereby imparting moisturization to the human skin body parts.

7. The method according to claim 6 wherein the salt is dihydroxypropyl trimonium chloride.