Cosmetics made in one or more colours by applying a magnetic field, and method for their preparation

Abstract

The present invention relates to a cosmetic product having a visible pattern consisting of one or more colours, comprising a cosmetic composition including one or more dyes and/or pigments which contain magnetic or magnetisable particles, characterised in that said cosmetic composition is housed in a container enclosing a magnet capable of generating a magnetic field, whereby said dyes and/or pigments are positioned and/or oriented in the container by said magnetic field, thereby creating the visible pattern.

Claims

1. A cosmetic product having a decorative pattern consisting of one or more colours, comprising a cosmetic composition including one or more dyes and/or pigments which contain magnetic or magnetisable particles, wherein said cosmetic composition is housed in a container enclosing a magnet capable of generating a magnetic field, wherein said decorative pattern is made of said dyes and/or pigments positioned and/or oriented in the container by said magnetic field, wherein the cosmetic composition is in the form of a free powder.

2. The cosmetic product according to claim 1, wherein the decorative pattern consists of two or more colours forming colored areas separated from each other.

3. The cosmetic product according to claim 1, wherein the decorative pattern consists of one colour and said dyes and/or pigments are oriented in the container by said magnetic field, thereby creating the decorative pattern.

4. The cosmetic product according to claim 1, wherein the dye and/or pigment is a dye and/or pigment acceptable for cosmetic use.

5. The cosmetic product according to claim 4, wherein the dye and/or pigment is a pearly dye and/or pigment.

6. The cosmetic product according to claim 5, wherein the pearly dye or pigment is based on substrates selected from the group consisting of natural or synthetic mica, synthetic fluorphlogopite, silica, calcium aluminium borosilicate, calcium sodium borosilicate, aluminium calcium sodium silicate, acrylates copolymer, triethoxycaprylylsilane, polyurethane-11 and polyester.

7. The cosmetic product according to claim 1, wherein the magnetic or magnetisable particles consist of at least one iron oxide or hydroxide.

8. The cosmetic product according to claim 1, wherein the container consists of glass, plastic, metal, natural fibres, synthetic fibres, non-woven fabric or a mixture thereof.

9. The cosmetic product according to claim 1, wherein the magnet enclosed in said container generates a magnetic field with a magnetic induction value ranging between 2 G (210-4 T) and 3 G (310-4 T), an intensity of the magnetic field ranging between 2 Oe (0.16 kA/m) and 2.5 Oe (0.20 kA/m) and a magnetic permeability ranging between 1.5 MGOe (11.94 KJ/m3) and 2 MGOe (15.91 kJ/m3).

Description

DESCRIPTION OF THE INVENTION

(1) The present invention relates to the manufacture of cosmetics in one or more colours housed in a single container, which is also the final container designed for use. The colours may be visibly separated from one another without the use of moulds, templates or preforms, but with the use of a magnet applied directly to the container of the cosmetic product. Alternatively a decorative pattern is created in a monocolor cosmetic products by changing the orientation of the magnetic particles with the use of a magnetic field.

(2) The subject of the present invention is a cosmetic product having a visible pattern consisting of one or more colours, comprising a cosmetic composition including one or more dyes and/or pigments which contain magnetic or magnetisable particles, characterised in that said cosmetic composition is housed in a container enclosing a magnet capable of generating a magnetic field, whereby said dyes and/or pigments are positioned and/or oriented in the container by said magnetic field, thereby creating the visible pattern.

(3) In one embodiment of the invention the visible pattern consists of two or more colours forming coloured areas visibly separated from each other.

(4) In a further embodiment of the invention, the visible pattern consists of one colour and said dyes and/or pigments, containing magnetic or magnetisable particles, are oriented in the container by said magnetic field, thereby creating the visible pattern.

(5) The magnet can be applied internally or externally in contact with the container of the cosmetic composition.

(6) The magnet generates a magnetic field with a magnetic induction value higher than 0.1 G (10.sup.5 T), a magnetic field intensity higher than 0.1 Oersted, and a magnetic permeability value higher than 0.1 MegaGauss Oersted.

(7) The magnetic induction value preferably ranges between 2 G (210.sup.4 T) and 3 G (310.sup.4 T).

(8) The intensity of the magnetic field preferably ranges between 2 Oe (0.16 kA/m) and 2.5 Oe (0.20 kA/m).

(9) The magnetic permeability preferably ranges between 1.5 MGOe (11.94 KJ/m.sup.3) and 2 MGOe (15.91 kJ/m.sup.3).

(10) The magnet preferably consists of magnetised plastoferrite, such as anisotropic magnetic rubber sold by Alga. The plastoferrite is preferably magnetised by inductive discharge to create a specific pattern. The magnet applied to the container positions and/or orients the dyes and/or pigments according to the specific design, creating a decorative effect without the use of moulds, templates or preforms.

(11) The container can be made, for example, of glass, plastic, metal, natural fibres, synthetic fibres, non-woven fabric or a mixture thereof.

(12) The dye and/or pigment is a dye and/or pigment acceptable for cosmetic use, and is preferably pearly.

(13) According to the present invention, the term pearly dye and/or pigment means a luster particle (creating unique luster effects) that can be based on different substrates, for example mica (mica can be a natural or synthetic substrate), synthetic fluorphlogopite, silica, calcium aluminium borosilicate, calcium sodium borosilicate, aluminium calcium sodium silicate, acrylates copolymer, triethoxycaprylylsilane, polyurethane-11 and polyester (a polyester-based dye and/or pigment may be a glitter).

(14) The particles orientable in a magnetic field preferably consist of at least one iron oxide or hydroxide.

(15) The cosmetic compositions can be in solid, liquid or fluid form, and preferably take the form of a free or compact powder, waxy mass, liquid, paste, extruded product or emulsion.

Example 1: Manufacture of a Three-Colour Eye Make-Up Powder

(16) The raw materials in the percentages by weight listed below:

(17) TABLE-US-00001 Talc 2% Mica CI 77019 5% Titanium dioxide 3% Black iron oxide CI 77499 40% Red iron oxide CI 77491 36.5% FD&C blue no. 1 10% Magnesium and aluminium silicate 3% Sorbic acid 0.25% Potassium sorbate 0.25%

(18) are mixed together in a fan grinder and divided by a powder filling machine between the final containers, to which a magnetic field with a magnetic induction value of 2.55 Gauss (2.5510.sup.4 T), a magnetic field intensity of 2.15 Oersted (0.17 kA/m) and magnetic permeability of 1.57 MGOe (12.49 kJ/m.sup.3) is applied. The magnetic field to which the product is subjected visibly separates the colours contained in it. The orientation of the magnetic field in relation to the container determines the shape of the demarcation lines between the colours.

Example 2: Preparation of a Two-Colour Cast Lip Make-Up Product

(19) The raw materials in the percentages by weight listed below:

(20) TABLE-US-00002 White beeswax 1% Ozokerite 4% Liquid paraffin 0.5% Castor oil 30% Titanium dioxide 0.5% Mica 4% Red iron oxide 30% Yellow iron oxide 30%

(21) are melted at the temperature of 90 C. in a wax melter. They are then divided by a fluid metering unit between the final containers, to which a magnetic field with a magnetic induction value of 2.40 Gauss (2.4010.sup.4 T), a magnetic field intensity of 2.35 Oersted (0.19 kA/m) and magnetic permeability of 1.45 MGOe (11.54 kJ/m.sup.3) is applied. The magnetic field to which the product is subjected visibly separates the colours contained in it. The orientation of the magnetic field in relation to the container determines the shape of the demarcation lines between the colours.