Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Cosmetic – antiperspirant – dentifrice
Reexamination Certificate
1999-11-10
2001-03-20
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Cosmetic, antiperspirant, dentifrice
C424S064000, C424S646000, C424S653000
Reexamination Certificate
active
06203807
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to cosmetic compositions with a lipophilic continuous phase, containing a novel yellow pigment of intense, saturated color which does not generate free radicals, and more especially to make-up compositions for the skin both of the human face and body, the lips and superficial body growths such as the nails, the eyelashes, the eyebrows or the hair.
2. Discussion of the Background
Make-up compositions, such as free or compact powders, foundations, face powders, eye shadows, lipsticks, concealers, blushers, mascaras, eyeliners, lip pencils or eye pencils or make-up products for the body, consist of a suitable vehicle and coloring agents of various natures, intended to give these compositions a certain color, before and/or after applying them to the skin, the lips and/or the superficial body growths.
These coloring agents can be lakes, inorganic or organic pigments and/or pearlescent pigments, or, alternatively, dyes. In the range of yellow pigments, cosmeticians have available pigments of inorganic origin such as yellow iron oxides and pigments of organic origin. Inorganic pigments, and in particular inorganic oxides, have the advantage of being relatively stable, but have the drawback of giving rather dull, pale colors. Organic lakes have the advantage of giving the compositions lively colors, but are mostly unstable with respect to light, temperature or pH. Some of these lakes also have the drawback of leaving unsightly marks on the skin or the nails after application, by running of the dye. As for pearlescent pigments, they allow varied, but never intense, colors to be obtained, with iridescent effects, but these are usually fairly weak.
Moreover, certain coloring agents have the drawback of generating free radicals in make-up formulations, thus modifying the yield of the colors and the stability of the compositions, and then on the skin after application, which promotes ageing of the skin (appearance of wrinkles, fine lines and yellowing of the skin). In particular, yellow iron oxides often give rise to an oxidation of polyunsaturated oils (for example plant oils), which limits the range of compositions. Examples of coloring agents which exhibit this drawback, include the yellow iron oxide mixtures (CI: 77492) sold under the trade name “Sicovit Yellow 10 E 172” by BASF, pigments of organic origin, and the aluminium lake of tartrazine on alumina (20/80) (CI: 19140, Cl: 77002) sold under the trade name FD & C Yellow 5 by Warner Jenkinson.
At the present time, to overcome this drawback, antioxidants such as ethoxyquine, for example, are used. Unfortunately, it is often difficult to find an antioxidant which is 100% effective given the multitude of ingredients present in make-up compositions. Furthermore, the antioxidants themselves often generate degradation products (oxidation of the antioxidant) which can cause interference.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a composition suitable for topical application, of a novel yellow pigment of intense, saturated color.
It is another object of the invention to provide a composition suitable for topical application which is stable and which has the advantage of generating far fewer free radicals than the pigments conventionally used, in particular, for obtaining a yellow color.
It is another object of the present invention to provide methods of treating various parts of the body, e.g., the skin, to take advantage of the properties of the inventive composition.
Surprisingly, the inventors have found that bismuth vanadate of formula BiVO
4
allows the production of free radicals to be limited, since it has the property of generating very few free radicals, and thus allows the use of antioxidants in the compositions to be limited. In addition, this pigment makes it possible to obtain an intense coloration and in particular a very bright, intense lemon-yellow color of very great color purity, which does not run on keratin substances and is stable with respect to light, pH and temperature. In addition, it broadens the color range in the cosmetics field and participates in the creation of vivid greens by mixing bright oranges with blues. Furthermore, it reduces the amount of pigments of the prior art, thus making it possible to preserve the sheen of the composition as well as that of the film deposited, which is highly desired for make-up products for the lips.
Thus, the objects of the present invention, and others, may be accomplished with a colored composition suitable for topical application, comprising a lipophilic continuous phase and an amount of bismuth vanadate effective to color the composition.
The objects of the present invention may also be accomplished with a method of preparing the inventive composition, comprising combining the lipophilic continuous phase and the bismuth vanadate.
The objects of the present invention may also be accomplished with a method of caring for the skin and/or the lips and/or the superficial body growths comprising, applying the inventive composition to the skin and/or the lips and/or the superficial body growths.
The objects of the present invention may also be accomplished with a method of making up the skin and/or the lips and/or the superficial body growths, comprising applying the inventive composition to the skin and/or the lips and/or the superficial body growths.
The objects of the present invention may also be accomplished with a method of protecting the skin and/or the lips and/or the superficial body growths, comprising applying the inventive composition to the skin and/or the lips and/or the superficial body growths.
The objects of the present invention may also be accomplished with a method of protecting the skin and/or the lips and/or the superficial body growths against the harmful effects of free radicals, comprising applying the inventive composition to the skin and/or the lips and/or the superficial body growths.
The objects of the present invention may also be accomplished with a method of alleviating the signs of ageing of the skin, comprising applying the inventive composition to the skin.
A more complete appreciation of the invention and many of the attendant advantages thereof will be readily obtained as the same becomes better understood by reference to the following detailed description.
DETAILED DESCRIPTION OF THE INVENTION
The manufacture of this pigment is, in particular, that described in documents EP-A-551,637 and EP-A-632,110. It has, in particular, a size of about 0.3 &mgr;m.
Bismuth vanadate can crystallize in various forms and thus express different yellow tones:
monoclinic lattice; fergusonite: bright yellow, density 6.959
tetragonal lattice; zircon: pale yellow, density 6.127
tetragonal lattice; scheelite: bright yellow, density 6.929
orthorhombic lattice; pulcherite: pale yellow.
It may also be in pure form or in a form deposited on a substrate. Preferably, it is in pure form and is sold under the reference Sicopal Gelb L1100 by BASF.
To demonstrate bismuth vanadate's property of not generating free radicals, an ethylene test has been conducted according to the process described in the article “Ethylene formation from methionine as a method to evaluate oxygen free radical scavenging and metal inactivation by cosmetics” by J. B. Galey, F. Millecamps and Q.-L. Nguyen,
International Journal of Cosmetic Science,
13, 65-78, 1991, incorporated herein by reference.
The object is to compare the behavior of the inorganic pigment according to the invention with that of conventional pigments in a photo-oxidation test using iron as free-radical generator.
In the ethylene test measurement procedure, the FeCl
3
used to activate the production of free radicals was replaced with each of the pigments to be tested. The results are given in the table below.
Dye
Ethylene Produced (peak area)
Concentration
0.01%
0.1%
0.2%
Yellow iron oxide (CI:
13,500
30,000
50,000
77492
Bismuth vanadate
5000
5500
5000
The control FeCl
3
at 0.005% is on average 9000 (arbi
Fubara Blessing
L'Oreal
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Page Thurman K.
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