Drug – bio-affecting and body treating compositions – Live skin colorant containing – Lip
Reexamination Certificate
2000-10-25
2002-08-06
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Live skin colorant containing
Lip
C424S070100, C424S401000
Reexamination Certificate
active
06428775
ABSTRACT:
FIELD OF THE INVENTION
Non-greasy cosmetic composition with effective make-up removal properties.
BACKGROUND OF THE INVENTION
Removing mascara, lipstick, and other make-up from the face is a daily task for many women. The modern trend is to make mascara and lipstick that is resistant to rub-off or moisture, hence increasing the challenge of make-up removal. An oil-based mascara is one of the most difficult types of make-up to remove.
Currently, one of the most popular cosmetic products to remove make-up is the so-called “cold cream.” Cold cream is applied to the skin like a regular cream; the slight massaging during application results in the solubilization of make-up and other impurities from the skin into the cream which is subsequently wiped-off using a cotton ball or a tissue. Cold creams contain a high level of oil (i.e., as much as 50% mineral oil). Oil is very effective for make-up removal, because most make-up products are oil-based and thus dissolve or bind to oil. Unfortunately, high levels of oil also result in a poor acceptability from consumers due to the high level of greasiness/oiliness imparted by the product. It is highly desirable to obtain a make-up remover which has high efficacy yet low greasiness.
SUMMARY OF THE INVENTION
The present invention includes a cosmetic make-up removal composition comprising:
(i) less than about 50% of a first make-up removing ingredient selected from the group consisting of waxes, mineral oil and mixtures thereof,
(ii) an isoparaffin as a second make-up removing ingredient; and
(iii) a cosmetically acceptable vehicle.
The inventive compositions contain a combination of two make-up removal ingredients, wherein the second ingredient (ii) boosts the make-up removal capacity of the first ingredient, thus allowing to decrease the content of mineral oil and/or wax in the composition, which in turn result in decreased greasiness of the composition.
DETAILED DESCRIPTION OF THE INVENTION
Except in the operating and comparative examples, or where otherwise explicitly indicated, all numbers in this description indicating amounts of material or conditions of reaction, physical properties of materials and/or use are to be understood as modified by the word “about.” All amounts are by weight of the oil-in-water emulsion, unless otherwise specified.
The term “skin” as used herein includes the skin on the face, neck, chest, back, arms, hands, legs and scalp.
For the avoidance of doubt the word “comprising” is intended to mean including but not necessarily consisting of or composed of. In other words the listed steps or options need not be exhaustive.
The inventive compositions contain a first make-up removal ingredient, which is mineral oil, alone or in combination with waxes, such as ceresine wax and paraffin wax. Mineral oil and/or wax is a greasy material. In the present invention, by virtue of the inclusion of an isopaffin, the content mineral oil and/or wax is minimized to below 50%. Preferably, in order to minimize greasiness, yet to maintain efficacy, mineral oil and/or wax is employed in an amount ranging from 10 to 49%, more preferably the amount is in the range of from 10 to 40%, most preferably 10 to 30%, and optimally from 15 to 25%.
The second make-up removal ingredient included in the present invention is an isoparaffin. According to the present invention, isoparaffins enhance make-up removing capacity of mineral oil and/or wax, without contributing to the greasiness of the final product. Isopaffins are branched aliphatic saturated hydrocarbon molecules. Isoparaffins within the scope of this invention preferably contain from 7 and to 20 carbon atoms, more preferably from 10 to 20 carbons, most preferably from 11 to 16 carbons. Isoparaffin is generally included in the inventive compositions in an amount of at least 5%, preferably present in an amount of from 5% to 40%, more preferably from 5% to 20%, most preferably from 7% to 15%.
The compositions according to the invention also comprise a cosmetically acceptable vehicle to act as a dilutant, dispersant or carrier for the make-up removing ingredients in the composition, so as to facilitate their distribution when the composition is applied to the skin.
The vehicle may be aqueous, anhydrous or an emulsion. Preferably, the compositions are aqueous or an emulsion, especially water-in-oil or oil-in-water emulsion, preferentially oil in water emulsion. Water when present will be in amounts which may range from 5 to 99%, preferably from 20 to 70%, optimally between 40 and 70% by weight.
Besides water, relatively volatile solvents may also serve as carriers within compositions of the present invention. Most preferred are monohydric C
1
-C
3
alkanols. These include ethyl alcohol, methyl alcohol and isopropyl alcohol. The amount of monohydric alkanol may range from 1 to 70%, preferably from 10 to 50%, optimally between 15 to 40% by weight.
Emollient materials may also serve as cosmetically acceptable carriers. These may be in the form of silicone oils and synthetic esters. Amounts of the emollients may range anywhere from 0.1 to 50%, preferably between 1 and 20% by weight.
Silicone oils may be divided into the volatile and non-volatile variety. The term “volatile” as used herein refers to those materials which have a measurable vapor pressure at ambient temperature. Volatile silicone oils are preferably chosen from cyclic or linear polydimethylsiloxanes containing from 3 to 9, preferably from 4 to 5, silicon atoms. Linear volatile silicone materials generally have viscosities less than about 5 centistokes at 25° C. while cyclic materials typically have viscosities of less than about 10 centistokes. Nonvolatile silicone oils useful as an emollient material include polyalkyl siloxanes, polyalkylaryl siloxanes and polyether siloxane copolymers. The essentially non-volatile polyalkyl siloxanes useful herein include, for example, polydimethyl siloxanes with viscosities of from about 5 to about 25 million centistokes at 25° C. Among the preferred non-volatile emollients useful in the present compositions are the polydimethyl siloxanes having viscosities from about 10 to about 400 centistokes at 25° C.
Among the ester emollients are:
(1) Alkenyl or alkyl esters of fatty acids having 10 to 20 carbon atoms. Examples thereof include isoarachidyl neopentanoate, isononyl isonanonoate, oleyl myristate, oleyl stearate, and oleyl oleate.
(2) Ether-esters such as fatty acid esters of ethoxylated fatty alcohols.
(3) Polyhydric alcohol esters. Ethylene glycol mono and di-fatty acid esters, diethylene glycol mono- and di-fatty acid esters, polyethylene glycol (200-6000) mono- and di-fatty acid esters, propylene glycol mono- and di-fatty acid esters, polypropylene glycol 2000 monooleate, polypropylene glycol 2000 monostearate, ethoxylated propylene glycol monostearate, glyceryl mono- and di-fatty acid esters, polyglycerol poly-fatty esters, ethoxylated glyceryl monoesters, 1,3-butylene glycol monostearate, 1,3-butylene glycol distearate, polyoxyethylene polyol fatty acid ester, sorbitan fatty acid esters, and polyoxyethylene sorbitan fatty acid esters are satisfactory polyhydric alcohol esters.
(4) Wax esters such as beeswax, spermaceti, myristyl myristate, stearyl stearate and arachidyl behenate.
(5) Sterols esters, of which cholesterol fatty acid esters are examples thereof.
Fatty acids having from 10 to 30 carbon atoms may also be included as cosmetically acceptable carriers for compositions of this invention. Illustrative of this category are pelargonic, lauric, myristic, palmitic, stearic, isostearic, hydroxystearic, oleic, linoleic, ricinoleic, arachidic, behenic and erucic acids.
These emollients may have a MUR ability and therefor may be included as part of the MUR combination of ingredients.
Humectants of the polyhydric alcohol-type may also be employed as cosmetically acceptable carriers in compositions of this invention. The humectant aids in increasing the effectiveness of the emollient, reduces scaling, stimulates removal of built-up scale and improves skin feel. Typical polyhydric alcohols in
Chavez Luisa Argelia Carrera
Gomez Jose Manuel Lopez-Gallo
Habif Stephan Samuel
Revilla-Lara Jose Antonio
Ruiz Humberto Garcia
Howard S.
Page Thurman K.
Plotkin Ellen
Unilever Home & Personal Care USA a division of Conopco, Inc.
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