Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
2000-06-28
2001-06-05
Gupta, Yogendra (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
C510S130000, C510S466000
Reexamination Certificate
active
06242396
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a make-up-removing composition and/or cleansing composition in the form of a water-in-oil emulsion comprising a high water content, at least one make-up-removing oil and a specific silicone surfactant. This composition has the appearance of a cream and is used in particular for removing make-up from and/or for cleansing the skin, the lips and/or the eyes.
2. Description of the Background
The make-up-removing agents and cleansing agents for the face in the form of emulsions, which have conventionally been used to date, have drawbacks that differ according to the sense of the emulsion. In the case of oil-in-water (O/W) emulsions, the external aqueous phase provides freshness. On the other hand, since the oily phase is the internal phase, it is not directly available to dissolve the fatty substances and, as a result, the make-up removal is less effective.
In the case of water-in-oil emulsions, which are very effective at make-up removal/cleansing because of the fact that the fatty phase is directly available to dissolve the various fatty substances present on the skin or derived from the make-up, they are uncomfortable to use because of the greasy, heavy sensation afforded by this external fatty phase which remains on the skin.
In cleansing the face, women are looking for a “sensation of water”, water being the symbol of cleanliness and purity, which are values that are greatly associated with cleansing, while at the same time retaining high make-up-removing and/or cleansing efficacy. Cleansing or make-up-removing products using water are derived from an entirely different technology, namely foaming bars, creams or gels. For certain types of skin, in particular dry and sensitive skin, these products lead to tautness, drying of the skin or even intolerance reactions.
Thus, there is a need for an effective cleansing and/or make-up-removing composition which provides a sensation of freshness without having the drawbacks known in the prior art.
SUMMARY OF THE INVENTION
Accordingly, one object of the present invention is to provide a skin cleansing and/or make-up removing composition which is effective and leaves a sensation of freshness to the skin without a feeling of tautness or an intolerance reaction.
Briefly, this object and other objects of the present invention as hereinafter will become more readily apparent can be attained by a cleansing and/or make-up-removing composition comprising, in a physiologically acceptable medium, an aqueous phase dispersed in an oily phase with the aid of a silicone emulsifier, wherein the medium comprises (1) at least 78% of aqueous phase, (2) at least one make-up-removing oil selected from the group consisting of fatty acid esters containing at least 12 carbon atoms, and (3), as an emulsifier, the dimethicone copolyol of formula (I):
In which R
1
represents —(C
3
H
6
O)—(C
2
H
4
O)
18
—(C
3
H
6
O)
18
H, p=394 and n=4, and wherein the medium is free of branched-chain hydrocarbon-based oil.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The expression “physiologically acceptable medium” means a medium which is compatible with the skin, the lips, the eyes, the scalp and/or the hair.
The expression “free of branched-chain hydrocarbon-based oil” refers to the fact that in which R
1
represents —(C
3
H
6
O)—(C
2
H
4
O)
18
—(C
3
H
6
O)
18
H, p=394 and n=4, and wherein the for example, isoparaffins, isohexadecane and isododecane.
Despite the large amount of aqueous phase in the composition, the composition of the invention is stable over time. In addition, it has a specific Theological characteristic which makes it particularly advantageous to use in the fields under consideration. The reason for this is that, when it is applied to the skin and after massaging for a few moments, which is essential to dissolve the fatty substances to be removed, the emulsion “breaks”, i.e. it suddenly becomes fluid, thus releasing the aqueous phase and generating a great sensation of freshness.
The composition of the invention preferably has a viscosity ranging from 3 Pa·s (30 poises) to 20 Pa·s (200 poises). This viscosity is measured using a Rheomat 180 machine, i.e. the Rheomat RM180 machine from the company Mettler.
The composition of the invention comprises at least 78% by weight of aqueous phase relative to the total weight of the composition and preferably at least 80% of the total weight of the composition. The aqueous phase can constitute up to 92% of the total weight of the composition. The aqueous phase comprises water and optionally water-soluble compounds such as, in particular, alcohols and polyols.
The water preferably constitutes at least 65%, more preferably at least 70% of the total weight of the composition.
Moreover, in a preferred embodiment of the invention, the aqueous phase contains, as water-soluble compounds, one or more lower alcohols or polyols. The expression “lower alcohol” refers to alcohols containing from 1 to 6 and more particularly from 1 to 4 carbon atoms, such as ethanol. Polyols which may be mentioned, for example, include glycerol, propylene glycol and polyethylene glycols (for example PEG-8). These alcohols and/or polyols may be present in the composition in an amount preferably ranging from 0.5 to 25% more preferably from 1 to 15% of the total weight of the composition.
Moreover, the composition of the invention contains, as an emulsifier, and preferably as sole emulsifier, the dimethicone copolyol of formula (I). This dimethicone copolyol can be in the form of a mixture with a volatile or non-volatile silicone oil, and in particular with cyclomethicones (D4 or D5) and/or polydimethylsiloxanes of different viscosities and in particular 5 cst and 10 cst.
The dimethicone copolyol containing mixtures below marketed by the company Dow Corning are particularly preferred for use in the composition of the invention:
a mixture of the compound of formula (I), tetracyclomethicone (D4) and water (weight ratio 10/88/2), sold under the name DC 3225C;
a mixture of the compound of formula (I), pentacyclomethicone (D5) and water (weight ratio 10/88/2), sold under the name DC 5225C;
a mixture of the compound of formula (I) and polydimethylsiloxane 5 cst (weight ratio 10/90), sold under the name DC 3225C in 200 Fluid 5 cst;
a mixture of the compound of formula (I) and polydimethylsiloxane 10 cst (weight ratio 10/90), sold under the name DC 3225C in 200 Fluid 10 cst; and
a mixture of the compound of formula (I) and pentacyclomethicone (D5) (weight ratio 43/57), sold under the name DC 51 85C.
The emulsifier of formula (I) is preferably present in an amount of active material ranging from 0.1 to 5%, more preferably from 0.5 to 3% by weight relative to the total weight of the composition.
Even when the composition is free of any other emulsifier, the composition remains stable over time.
Preferably, the oily phase/emulsifier weight ratio is greater than or equal to 5, more preferably greater than or equal to 8.
The oily phase of the composition of the invention contains at least one make-up-removing oil selected from the group consisting of fatty acid esters containing at least 12 carbon atoms.
The make-up-removing oil is selected from the group consisting of fatty acid esters containing at least 12 carbon atoms. These esters are preferably obtained from a straight-chain or branched-chain alcohol containing from 1 to 17 carbon atoms and from a straight-chain or branched-chain fatty acid containing at least 12 carbon atoms and preferably from 14 to 22 carbon atoms. They are preferably mono- or diesters.
Preferably, the make-up-removing oil is selected from the group consisting of the group of esters which comprise no unsaturation and/or no ether or hydroxyl groups. Even more advantageously, the make-up-removing oil is a saturated ester which contains no ether or hydroxyl groups.
Thus, the make-up-removing oil in the composition of the invention can be selected, in particular, from the group consisting of 2-ethylhexyl palmitate (or oct
Carton Isabelle
Guillou Veronique
Gupta Yogendra
L'Oreal
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Petruncio John M.
LandOfFree
Cosmetic composition for removing make-up from and/or for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cosmetic composition for removing make-up from and/or for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cosmetic composition for removing make-up from and/or for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2437931