Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
2003-03-28
2004-11-02
Ogden, Necholus (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
C510S136000, C510S158000, C510S426000, C510S427000, C510S490000, C510S492000, C510S499000, C424S070100
Reexamination Certificate
active
06812192
ABSTRACT:
Disclosed herein is a foaming composition for topical application, comprising at least one surfactant system comprising at least one fatty acid chosen from partially and completely neutralized fatty acids, at least one non-betaine amphoteric co-surfactant and at least one anionic co-surfactant of the sulphosuccinate type. Further disclosed herein is the use of the foaming composition in the cosmetic or dermatological fields, for example, as cleansing and/or make-up-removing products for a human keratinous material such as skin.
Cleansing the skin is very important for facial care. It should be as effective as possible because fatty residues such as excess sebum, residues of the cosmetic products used daily and make-up products, for example, waterproof products, accumulate in skin folds and can obstruct the pores of the skin and cause the appearance of spots.
Several classes of skin cleansing products are known, for example, foaming detergent aqueous lotions and gels, rinsable cleansing anhydrous oils and gels and foaming creams.
Rinsable anhydrous oils and gels can have a cleansing action by virtue of the oils contained in these formulations. These oils can allow the solubilization of the fatty residues and the dispersion of the make-up pigments. These products can be effective and well tolerated. They may have at least one of the following disadvantages that include but is not limited to: being heavy, not foaming, and not conferring a cooling sensation upon application, any or all of these disadvantages may be a drawback from a cosmetic point of view.
The foaming detergent aqueous lotions and gels can have a cleansing action by virtue of the surfactants which can suspend the fatty residues and the pigments of make-up products. They can be effective and pleasant to use because they can foam and they can be easily removed. However, these lotions and gels may be quite fluid, which may, for example, make their handling sometimes delicate, and it may be difficult to thicken gels while retaining good foaming properties.
Foaming creams have been prepared in an attempt to obtain good foaming performance while providing a thick composition. As used herein, the expression “foaming creams” means viscous, opaque compositions which are, for example, packaged in tubes and which comprise an aqueous medium comprising at least one surfactant chosen from, for example, fatty acid salts (soaps) and anionic, non-ionic and amphoteric synthetic surfactants, and at least one other additive such as polymers, polyols and fillers. Further, the expression “soiling residues,” as used herein, means any matter found on a human keratinous material, for example, make-up residues or dirt particles.
These creams, which are intended, for example, for cleansing the skin, can produce foam when they are mixed with water. They can be used, for example, in two ways:
the first use comprises spreading the cream on hands, applying it to face and/or body and then massaging it in the presence of water in order to produce the foam directly on the face and/or the body:
the of other possible use of this type of product comprises producing the foam in the palms of the hand before applying it to the face and/or the body.
In both cases, the foam may then be rinsed off.
Among the foaming creams which are currently commercially available, some produce foams whose qualities may not yet be satisfactory, for example, as regards to the rapid initiation of foaming, the foaming power, and the creamy nature of the foam (i.e., density). Other foaming creams may, for example, become unstable over time and, for example, may be sensitive to temperature variations and to transport and storage conditions. These factors may cause macroscopic demixing, resulting in a separation into at least two phases.
A cleansing foaming cream should, for example, be resistant after several months to temperature variations and to transport and storage conditions. Indeed, during its life, the product may be exposed to temperatures which vary according to climatic, storage or transport conditions. It may also, for example, be subjected to shaking during its transportation. Further, it may also be necessary for these foaming creams to be capable of use in hot countries without any problems posed by their transportation and their preservation.
Therefore, there is still a need for a cleansing foaming cream which can be storage stable, resistant to fluctuations in temperature and transport conditions and which does not exhibit at least one of the disadvantages listed above.
The inventors have discovered, surprisingly, that it was possible to overcome at least one of the disadvantages listed above and to obtain a foaming composition provided in the form of a cream having good stability by using at least one surfactant system comprising at least one fatty acid chosen from partially and completely neutralized fatty acids, at least one non-betaine amphoteric co-surfactant, and at least one sulphosuccinate-type anionic co-surfactant.
It is thus possible to obtain an opaque composition which may have at least one of the following excellent cosmetic properties: softness and unctuousness, which can exhibit good spreading straight from the tube, produce a foam which starts rapidly, which can be creamy, dense and which can be removed very quickly upon rinsing. The composition obtained may also have, for example, good resistance over time to temperature variations and to transport conditions.
Thus, disclosed herein is a foaming composition for topical application, comprising, in a cosmetically acceptable aqueous medium, at least one surfactant system comprising:
(a) at least one fatty acid chosen from partially and completely neutralized fatty acids, wherein the at least one fatty acid is neutralized with at least one base chosen from organic and inorganic bases;
(b) at least one non-betaine amphoteric surfactant; and
(c) at least one sulphosuccinate-type anionic surfactant; provided that the weight ratio of the at least one non-betaine amphoteric surfactant to the at least one sulphosuccinate-type anionic surfactant is less than about 2:1.
Also disclosed herein is the cosmetic use of the composition as defined above, as cleansing and/or make-up-removing products for keratinous materials.
Further disclosed herein is a cosmetic method for cleansing the soiling residues of a human keratinous material, comprising applying the composition disclosed herein to said keratinous material, in the presence of water, performing a massage in order to form a foam, contacting the foam formed with the soiling residues, and removing the foam formed and the soiling residues by rinsing with water.
As used herein, the expression “a human keratinous material” means skin (body or face including eyelids and scalp) and the superficial body growths such as hair, eyelashes and eyebrows.
The at least one fatty acid disclosed herein is chosen, for example, from fatty acids comprising at least one alkyl chain chosen from saturated and unsaturated, linear and branched alkyl chains comprising from 6 to 30 carbon atoms, for example, from 12 to 22 carbon atoms.
The at least one fatty acid may, for example, be chosen from lauric acid, myristic acid, palmitic acid and stearic acid. In one embodiment, the at least one fatty acid is a mixture of lauric acid, myristic acid, palmitic acid and stearic acid.
The at least one base that may be used for partially or completely neutralizing the at least one fatty acid may, for example, be chosen from inorganic bases such as alkali metal hydroxides (such as sodium hydroxide and potassium hydroxide), alkaline-earth metal hydroxides (such as magnesium hydroxide) and aqueous ammonia, and organic bases such as triethanolamine, monoethanolamine, monoisopropanolamine, N-methylglucamine, lysine and arginine. For example, potassium hydroxide may be used.
According to one embodiment, the at least one fatty acid may be introduced into the composition in free form and then the at least one base is added, the neutralization occurring in situ.
The at least one fatty acid disclosed
Bissey-Beugras Laure
Ribery Delphine
L'Oreal (S.A.)
Ogden Necholus
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