# US 9,040,472 B2 · Skin cleansing system and method

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 9,040,472 B2
- Document ID: US9040472B2
- Status: Granted
- Kind: B2
- Application number: 13/481,335
- Filed: 2012-05-25
- Published: 2012-09-13
- Granted: 2015-05-26
- Earliest claimed: 2010-02-02
- Assignees: University of New Brunswick
- Applicants: Frank Collins
- Inventors: Frank Collins
- Web page: https://patentgrep.com/patent/US9040472B2

## CPC

- A61K 8/37: Esters of carboxylic acids
- A61Q 19/10: Washing or bathing preparations
- A61K 2800/5922: At least two compounds being classified in the same subclass of A61K8/18
- A61K 2800/87: Application Devices; Containers; Packaging
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS

## Abstract

A cleansing composition for cleansing skin, especially for removing grease from skin. A cleaning composition of the present invention may also be used in ready-to-use (or in-use) kits, such as two component kits, suitable for cleansing skin.

## Claims

### Claim 1

A skin cleansing system comprising:
(i) a non-aqueous solvent component for application to skin, comprising a non-water miscible biodegradable solvent, the solvent comprising an alkyl ester derived from a natural source, the alkyl ester at a concentration of about 100 weight % of the solvent component; and,
(ii) a solvent remover for removing the non-aqueous solvent component from skin, wherein the solvent component and the solvent remover are not combined prior to use.

### Claim 2 (depends on 1)

The skin cleansing system of claim 1 wherein the solvent is derived from at least an agricultural or aquacultural source.

### Claim 3 (depends on 1)

The skin cleansing system of claim 1 wherein the alkyl ester is propyl ester.

### Claim 4 (depends on 1)

The skin cleansing system of claim 1 wherein the alkyl ester is a methyl ester selected from the group consisting of hexadecanoic acid methyl ester (methyl palmitate); pentadecanoic acid; 14-methyl-methyl ester; 9,12-octadecadienoic acid methyl ester (methyl linoleate); 8,11-Octadecadienoic acid methyl ester; methyl oleate; methyl cis-9-octadecenoate; octadecanoic acid methyl ester (ethyl stearate); 9-Hexadecenoic acid methyl ester (Palmitoleic Acid methyl ester); 13-docosenoic acid methyl ester; (Z)—(Erucic acid methyl ester); tetracosanoic acid methyl ester (methyl tetracosanoate); heneicosanoic acid methyl ester eicosanoic acid methyl ester (methyl arachidate; methyl eicosanoate) and heneicosanoic acid methyl ester.

### Claim 5 (depends on 1)

The skin cleansing system of claim 1, wherein the solvent remover comprises a surfactant.

### Claim 6 (depends on 5)

The skin cleansing system of claim 5, wherein the surfactant is a non-ionic surfactant.

### Claim 7 (depends on 1)

The skin cleansing system of claim 1 wherein the solvent remover is selected from the group consisting of alcohol ethoxylate, alkylpolyglycoside, fatty alcohol amide, amine oxide and a polyoxyolefin.

### Claim 8 (depends on 1)

The skin cleansing system of claim 1, further comprising lanolin.

### Claim 9 (depends on 1)

The skin cleansing system of claim 1, further comprising one or more additives selected from the group consisting of an antioxidant, a pour depressant and a stabilizer.

### Claim 10

A kit for cleansing skin comprising:
a first non-aqueous solvent component for application to skin, comprising a biodegradable non-water miscible solvent, the solvent comprising an alkyl ester derived from a natural source, the alkyl ester at a concentration of about 100 weight % of the solvent component; and,
a second component separate from the first component comprising a solvent remover for removing the non-aqueous solvent component from skin.

### Claim 11 (depends on 10)

The kit of claim 10, wherein the solvent remover is a surfactant.

### Claim 12 (depends on 10)

The kit of claim 10, wherein the first component further comprises lanolin.

### Claim 13 (depends on 11)

The kit of claim 11, wherein the surfactant is a non-ionic surfactant.

### Claim 14 (depends on 10)

The kit of claim 10 wherein the alkyl ester is propyl ester.

### Claim 15 (depends on 10)

The kit of claim 10, wherein the alkyl ester is a methyl ester selected from the group consisting of hexadecanoic acid methyl ester (methyl palmitate), pentadecanoic acid, 14-methyl-methyl ester, 9,12-octadecadienoic acid methyl ester (methyl linoleate), 8,11-Octadecadienoic acid methyl ester, methyl oleate, methyl cis-9-octadecenoate, octadecanoic acid methyl ester (ethyl stearate), 9-Hexadecenoic acid methyl ester (Palmitoleic Acid methyl ester), 13-docosenoic acid methyl ester, (Z)—(Erucic acid methyl ester), tetracosanoic acid methyl ester (methyl tetracosanoate), heneicosanoic acid methyl ester eicosanoic acid methyl ester (methyl arachidate, methyl eicosanoate); heneicosanoic acid methyl ester and combinations thereof.

### Claim 16 (depends on 10)

The kit of claim 10 wherein the solvent remover is selected from the group consisting of an alcohol ethoxylate, alkylpolyglycoside, fatty alcohol amide, amine oxide, a polyoxyolefin and combinations thereof.

### Claim 17 (depends on 10)

The kit of claim 10, wherein the alkyl ester is a bio-alkyl ester.