Method and compositions for improving appearance of skin

• US 9,278,056 B2
• Filed: 03/25/2015
• Issued: 03/08/2016
• Est. Priority Date: 01/19/2010
• Status: Active Grant

• Current Assignee: ELC Management LLC (The Estee Lauder Companies Inc.)
• Original Assignee: ELC Management LLC (The Estee Lauder Companies Inc.)
• Inventors: Cohen, Isaac David, Cummins, Phillip, Sojka, Milan Franz, Culhane, David Walter, Fthenakis, Christina G., Sobel, Jennifer L., Dreher, John Dudley, Mikhaylova, Yelena
• Primary Examiner(s): Arnold, Ernst V
• Assistant Examiner(s): Song, Jianfeng
• Application Number:
  US14/668,107
• Publication Number:
  US 20150209266A1
• Time in Patent Office: 349 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: A61K 2800/262 Transparent; Translucent
• CPC Class Codes: A61K 2800/31 Anhydrous
• CPC Class Codes: A61K 2800/412 Microsized, i.e. having sizes between 0.1 and 100 microns
• CPC Class Codes: A61K 2800/43 Pigments; Dyes
• CPC Class Codes: A61K 2800/651 The particulate/core comprising inorganic material
• CPC Class Codes: A61K 2800/654 The particulate/core comprising macromolecular material
• CPC Class Codes: A61K 2800/805 Corresponding aspects not provided for by any of codes A61K2800/81 - A61K2800/95
• CPC Class Codes: 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
• CPC Class Codes: A61K 8/0283 Matrix particles
• CPC Class Codes: A61K 8/18 characterised by the composition
• CPC Class Codes: A61K 8/19 containing inorganic ingredients
• CPC Class Codes: A61K 8/29 Titanium; Compounds thereof
• CPC Class Codes: A61K 8/8147 Homopolymers or copolymers of acids; Metal or ammonium salts thereof, e.g. crotonic acid, (meth)acrylic acid; Compositions of derivatives of such polymers
• CPC Class Codes: A61K 8/8152 Homopolymers or copolymers of esters, e.g. (meth)acrylic acid esters; Compositions of derivatives of such polymers
• CPC Class Codes: A61Q 1/02 Preparations containing skin colorants, e.g. pigments preparations in powder form A61Q1/12
• CPC Class Codes: A61Q 1/06 Lipsticks
• CPC Class Codes: A61Q 1/08 for cheeks, e.g. rouge
• CPC Class Codes: A61Q 1/10 for eyes, e.g. eyeliner, mascara
• CPC Class Codes: D06P 5/04 with organic compounds

Abstract

A method for improving the appearance of skin depth, dimensionality or undertones by topically applying a composition containing composite particulates made by (a) solvating a clear or translucent thermoplastic material with solvent in an amount sufficient to swell the material; (b) combining the solvated mixture of (a) with one or more colorants; (c) removing the solvent to form a composite particulate, (d) formulating the composite particulate into a topical cosmetic composition for application to skin.

Claims

1. A method for imparting color to skin while improving the appearance of skin dimensionality, depth, or undertones by applying a composition comprising a composite particulate which is not a collapsed microsphere, having a portion comprised of at least one colorant and a portion comprised of at least one clear or translucent thermoplastic material wherein the composite particulate is made by (a) combining one or more colorants in particulate form with polymethylmethacrylate (PMMA) in the form of solid spheres;

(b) adding solvent in an amount sufficient to swell the PMMA and cause fused agglomerates of colorant and PMMA to form, (c) removing the solvent and causing the mixture to dry, (d) subjecting the dried mixture to milling to form fused agglomerates having a particle size ranging from 1 to 100 microns, (e) coating the fused agglomerates with a coating selected from the group consisting of silicone elastomers, silicone resins, silicone gums, synthetic or natural waxes and mixtures thereof, (f) sieving the fused agglomerates to remove particles larger than 45 microns;

formulating the composite particulates of (f) into a topical cosmetic composition for application to skin.

2. The method of claim 1 wherein the solvent is acetone, xylene, methylethyl ketone (MEK), dimethylformamide, dimethylchloride, trichloroethylene, trichloromethane, methanol, ethanol, isopropanol, ethyl acetate, butyl acetate, toluene, benzene, cyclohexane, amyl acetate, carbon tetrachloride, toluene, tetrahydrofuran, benzene, diacetone alcohol, ethylene dichloride, methylene chloride, DMSO, morpholine, cellosolve, pyridine, propanol;

or C_1-4 mono- or dialkyl ethers of ethylene glycol, or mixtures thereof.

3. The method of claim 2 wherein the solvent is ethanol.

4. The method of claim 1 wherein (a) 50 parts of the colorant is combined with 50 parts PMMA.

5. The method of claim 4 wherein (b) 50 parts of solvent is added.

6. The method of claim 5 wherein the mixture of (a) and (b) is exposed to solvent for 1 to 10 hours.

7. The method of claim 6 wherein (d) the dried mixture is milled by jet milling.

8. The method of claim 6 wherein the colorants are iron oxides, FD&

C or D&

C colors or Lakes thereof, or powders.

9. The method of claim 1 wherein the coating of (e) is applied by spray drying.

10. The method of claim 1 wherein the topical composition is a color cosmetic composition.

11. The method of claim 10 wherein the color cosmetic composition is in the form of an eyeshadow, mascara, blush, or foundation.

12. The method of claim 11 wherein the color cosmetic composition is a foundation makeup.

13. The method of claim 12 wherein the foundation makeup contains a total colorant component and the composite particulate comprises 40-60 parts of the total colorant component and 60-40 parts of the colorant component is iron oxides not in composite particulate form.

14. The method of claim 13 in the form of a water and oil emulsion further comprising water, silicone oil, and a cross-linked silicone surfactant.

15. The method of claim 1 wherein the composite particulates have a particle size ranging from 1 to 45 microns.

16. The method of claim 15 wherein the composite particulates have a particle size ranging from 1 to 15 microns.