# US 11,992,541 B2 · Nanoemulsion cosmetic composition and process for preparing same

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- Number: US 11,992,541 B2
- Document ID: US11992541B2
- Status: Granted
- Kind: B2
- Application number: 17/512,347
- Filed: 2021-10-27
- Published: 2022-04-28
- Granted: 2024-05-28
- Earliest claimed: 2020-10-28
- Assignees: Amorepacific Corporation
- Applicants: Amorepacific Corporation
- Inventors: Byoung Young Woo; Yong Deog Hong; Joonyoung Hwang
- Web page: https://patentgrep.com/patent/US11992541B2

## CPC

- A61K 8/062: {Oil-in-water emulsions}
- A61K 8/068: {Microemulsions}
- A61K 8/0241: {Containing particulates characterized by their shape and/or structure (see also A61K8/04, A61K8/11, and A61K8/14, further aspects are classified in A61K2800/40 and subcodes)}
- A61K 8/602: {Glycosides, e.g. rutin}
- A61K 8/63: Steroids; Derivatives thereof
- A61K 8/922: {of vegetable origin}
- A61K 8/9789: Magnoliopsida [dicotyledons]
- A61Q 19/00: Preparations for care of the skin
- A61K 2800/21: Emulsions characterized by droplet sizes below 1 micron
- A61K 2800/33: Free of surfactant
- A61K 2800/412: Microsized, i.e. having sizes between 0.1 and 100 microns
- A61K 2800/413: Nanosized, i.e. having sizes below 100 nm
- A61K 2800/805: Corresponding aspects not provided for by any of codes A61K2800/81 - A61K2800/95
- B82Y 5/00: Nanobiotechnology or nanomedicine, e.g. protein engineering or drug delivery
- 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
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES

## Abstract

The present disclosure relates to a nanoemulsion cosmetic composition including an oil phase and an aqueous phase, wherein the oil phase contains a ginseng nanopowder and an oil swollen by the ginseng nanopowder, the composition does not contain an additional surfactant, and the ginseng nanopowder is distributed uniformly in the composition. According to the present disclosure, there is provided a nanoemulsion cosmetic composition which contains a natural substance by containing a ginseng nanopowder and an oil swollen by the ginseng nanopowder in an oil phase and provides beneficial effect to skin.

## Claims

### Claim 1

A nanoemulsion cosmetic composition comprising an oil phase and an aqueous phase, wherein
the oil phase comprises a ginseng nanopowder and an oil swollen by the ginseng nanopowder,
the composition does not comprise a synthetic surfactant,
the ginseng nanopowder is distributed uniformly in the composition,
wherein the oil is ginseng seed oil, and
wherein the composition is an oil-in-water composition,
wherein the ginseng nanopowder is contained in an amount of more than 0 wt % and 5 wt % or less based on the total weight of the composition, and
wherein the ginseng nanopowder and the oil are contained at a ratio of 1:1-3 based on weight.

### Claim 2 (depends on 1)

The composition according to claim 1, wherein the ginseng nanopowder is obtained from ginseng root.

### Claim 3 (depends on 1)

The composition according to claim 1, wherein the composition is a whole cosmetic composition.

### Claim 4 (depends on 1)

The composition according to claim 1, wherein the oil phase is contained in an amount of 4-20 wt % based on the total weight of the composition.

### Claim 5 (depends on 1)

The composition according to claim 1, wherein the oil phase has an average diameter of 500 nm or less.

### Claim 6 (depends on 1)

The composition according to claim 1, wherein the oil phase is contained in an amount of 2.5-15 wt % based on the total weight of the composition.

### Claim 7 (depends on 1)

A method for preparing the nanoemulsion cosmetic composition according to claim 1, comprising preparing an emulsion through collision dispersion of water, an oil and a ginseng nanopowder precursor.

### Claim 8 (depends on 7)

The method according to claim 7, wherein the collision dispersion is achieved by spraying a solution wherein water, an oil and a ginseng nanopowder precursor are dispersed using opposing nozzles.

### Claim 9 (depends on 8)

The method according to claim 8, wherein the collision pressure of the spraying is 180-200 MPa.

### Claim 10 (depends on 7)

The method according to claim 7, wherein the oil is ginseng seed oil.

### Claim 11 (depends on 7)

The method according to claim 7, wherein the ginseng nanopowder precursor comprises particles with a volume-based particle size distribution, D90, measured by laser diffractometry of less than 16 μm.