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Emulsion containing organosilicon-based portions of hollow spheres

Inactive Publication Date: 2005-06-02
LOREAL SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0012] The inventor has now discovered, surprisingly and unexpectedly, that portions of certain silicone particles, including those obtained by condensatio

Problems solved by technology

It is known that, depending on their size, shape and chemical nature, pulverulent materials interfere with the various components of light above and as a result have the capacity to modify the appearance of the skin.
The reason for this is that the highlights caused by an excess of sebum on the surface of the skin are generally considered as unattractive.

Method used

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  • Emulsion containing organosilicon-based portions of hollow spheres

Examples

Experimental program
Comparison scheme
Effect test

example 1

Cosmetic Compositions

[0169]

AO / W emulsions(comparative)BCDXanthan gum0.20%0.20%0.20%0.20%Crosslinked poly0.40%0.40%0.40%0.40%(2-acrylamido-2-methyl-propanesulfonic acid)Cyclohexasiloxane10.0%10.0%10.0%10.0%Sodium hydroxide0.01%0.01%0.01%0.01%Glycerol5.00%5.00%5.00%5.00%Stearyl alcohol1.00%1.00%1.00%1.00%Polyoxyethylene glyceryl2.00%2.00%2.00%2.00%stearate (100 OE)Dimyristyl tartrate,1.50%1.50%1.50%1.50%cetearyl alcohol,oxyethylenated (7 OE)C12-15 fatty alcohols andoxyethylenated (25 OE)and oxypropylenated(25 OE) lauryl alcoholSpherical particles of5.00%crosslinkedorganopolysiloxane(1)Hemispherical particles of5.00%crosslinkedorganopolysiloxane(2)Hemispherical particles of5.00%crosslinkedorganopolysiloxane(3)Hemispherical particles of5.00%crosslinkedorganopolysiloxane(4)Preserving agents0.70%0.70%0.70%0.70%Waterqsqsqsqs100%100%100%100%

(1)Spherical particles of diameter 3.2 μm consisting of a dimethiconol / silsesquioxane copolymer

(2)Particles consisting of the crosslinked organosilico...

example 2

In vitro Evaluation of the Optical Properties

[0171] The matt effect obtained with compositions B to D according to the invention, and with composition A given as a comparative example, was measured using a contrast card (Prufkarte type 24 / 5-250 cm2) sold by the company Erichsen. The composition was spread at a rate of 2 mg / cm2 using a mechanical film spreader. The composition was then dried overnight at a temperature of 37° C., and the reflection was then measured using a gonioreflectometer. The result obtained is the ratio R between the specular reflection and the diffuse reflection. The value of R is proportionately smaller the greater the matting effect.

CompositionABCDR2.00 ± 0.090.85 ± 0.100.88 ± 0.020.55 ± 0.05

[0172] These in vitro results show that with a 5% (active material) concentration of hemispherical particles of organopolysiloxane, the matt result obtained is very much superior to that obtained with the comparative formulation containing organosilicon-based spherical...

example 3

In vivo Evaluation

[0173] The matting effect and the cosmetic aspects of a formulation corresponding to composition B of Example 1, but containing 8% of hemispherical particles of organopolysiloxane instead of 5%, were evaluated by a panel of seven women with greasy skin. It was judged that this composition made the skin matt and gave it a fine grain, the pores appearing less dilated and the complexion more unified. A soft-focus effect on the defects was observed.

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Abstract

The present invention relates to a composition in the form of an emulsion containing portions of hollow spheres of organosilicon-based material, the portions of hollow spheres having a mean diameter ranging from 0.05 to 10 μm. The invention also relates to physiologically acceptable emulsion compositions comprising hollow spheres, and to a process for fading out skin surface defects, in particular to reduce the sheen of the skin and / or to fade out pores, shadows under the eyes, marks, wrinkles and / or fine lines, comprising the topical application to the skin of the above-mentioned compositions.

Description

REFERENCE TO PRIOR APPLICATIONS [0001] This application claims priority to U.S. provisional application 60 / 529,754 filed Dec. 17, 2003, and to French patent application 0350829 filed Nov. 13, 2003, both incorporated herein by reference.FIELD OF THE INVENTION [0002] The present invention relates to a composition in the form of an emulsion comprising portions of hollow spheres, sometimes termed hollow sphere portions herein, of an organosilicon-based material, the spheres having a mean diameter ranging from 0.05 to 10 μm. [0003] The invention also relates to physiologically acceptable emulsion compositions comprising portions of hollow spheres, and to a process for fading out skin surface defects, in particular to reduce the sheen of the skin and / or to fade out pores, shadows under the eyes, marks, wrinkles and / or fine lines, comprising the topical application to the skin of the above-mentioned compositions. [0004] Additional advantages and other features of the present invention will...

Claims

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Application Information

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IPC IPC(8): A61K8/06A61K8/11A61Q1/00A61Q19/00A61Q19/08
CPCA61K8/06A61K8/11A61K2800/412A61Q1/00A61Q19/008A61Q19/08A61K8/025A61Q19/007A61Q19/02A61Q19/00A61P17/00A61P17/08A61K8/0279A61K8/89
Inventor CASSIN, GUILLAUME
Owner LOREAL SA
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