Product designed as cosmetic wipes

FIELD: medicine.

SUBSTANCE: the present method deals with a product designed as disposable cosmetic wipes that contain soft water-insoluble substrate such as tissue impregnated with either alpha- or beta-hydroxycarbonic acid in cosmetically acceptable carrier-foundation. Impregnating cosmetic compositions will have pH of not above 6.8 in water. Silicone microemulsion is available to minimize stickiness being the result of applying hydroxycarbonic acid upon skin with the above-suggested wipes. In the presence of surface-active substances that contain groups of fatty acid, silicone microemulsion prevents the appearance of unpleasant odors which could be produced by surface-active substance in the course of hydrolysis at low pH.

EFFECT: higher efficiency of application.

14 cl, 9 ex, 2 tbl

This invention relates to disposable wipes for use for cosmetic application of alpha-hydroxycarbonic acids.

The prior art in this field

Alpha-hydroxycarbonate acids and their derivatives are widely known as providing a therapeutic effect to maintain your youthful appearance. These substances reportedly inhibit the formation of fine lines and wrinkles on the face. However, the compositions of these substances is difficult. Among the problems that arose are incompatible with the systems of media, physical stability and skin irritation. In addition, it is especially difficult to get a prescription low pH.

U.S. patent 5091171 (Yu et al.) was one of the first documents that describe the use of alpha-hydroxycarbonic acids as effective against the appearance of fine lines and wrinkles. This was followed by a huge number of publications and received many commercial products, which are based on the effectiveness of these substances. Most formulations described to date, was a type of cream or lotion. One of the problems associated with these drugs is that they are not always evenly distributed over the surface to which applied. Secondly, whenever the surface treated with the act the main substance, then it is purified active substance is washed off. Therefore, the necessary means of preserving the alpha hydroxycarbonic acids on the skin surface that is not sensitive to the effects of subsequent treatment. Irritation was also of great concern, as the drugs usually have a low pH.

In WO 96/11572 (Moberg) used a variety of acids, including alpha-hydroxylases, known as lactic acid, in water hexyleneglycol the drug, which can be impregnated fabric or refreshing wipes. These substances are used to overcome the problem of microbial growth on the skin, they act as disinfectants.

In U.S. patent 4828912 (Hossain et al.) and the U.S. patent 4764418 (Kuenn et al.) described virucidal tissue products designed for control of diseases caused by microorganisms, such as viruses and the common cold. Of carboxylic acids, such as citric acid, malic, succinic and benzoic acid, were created products with surfactants and carrier for impregnating cosmetic tissues or other nonwoven materials.

None of the above descriptions are not addressed to the question of stickiness alpha hydroxycarbonic acids, when they are applied on the skin with cosmetic wipes. Also did not present any discussion in relation to the control stocks is a, which may occur in systems with low pH.

Accordingly, an object of this invention to provide a product and a method that combines cleansing of the skin and reduce signs of aging.

Another object of this invention to provide a product and method of application of alpha-hydroxycarbonic acids thus to prevent the formation of sticky residue on the skin.

Another object of this invention is to get the product to deliver alpha hydroxycarbonic acids in the product, which prevents the formation of unpleasant odors.

These and other objects of this invention will be more evident from the subsequent brief descriptions and detailed discussions that follow below.

BRIEF description of the INVENTION

In accordance with this invention provides a product in the form of cosmetic wipes, which includes:

(a) a water insoluble substrate;

(b) a cosmetic composition, a sealing substrate, including:

(i) alpha - or beta-hydroxycarbonyl acid;

(ii) a silicone microemulsion,

(iii) the composition in water, having a pH not higher than 6.5.

Silicone microemulsions of the present invention provide both the stability of the composition, and the anti-stickiness, which may occur when alpha-hydroxycarbonate KIS is the notes applied to the skin.

Surfactants, particularly soft surface-active substances such as surfactants amphoteric type, may be degraded at low pH, emitting foul odors. Silicone microemulsions of the present invention, as has also been found suitable for counteracting the formation of unpleasant odors.

DETAILED description of the INVENTION

Unexpectedly it was found that the wipes impregnated alpha-hydroxycarbonyl acids, can be used for applying medication to the skin without giving any stickiness. This is achieved by applying silicone microemulsions.

Usually creams, lotions and other types of cosmetic carriers, having in its composition alpha-hydroxycarbonate acid, also contain softeners, are applied to the skin together with other active substances. These softeners include, for example, esters, hydrocarbons or Dimethicone oil. The presence of softeners masks any stickiness that may occur as a result of evaporation of water or the media, leaving behind dry active substance.

Unfortunately, the products in cosmetic wipes not impregnated with liquids with high viscosity, so as napkins will not damp enough, when the liquid for impregnation too thick. However, liquids with low viscosity, is the quiet should be applied using napkins, prone to poor stability of the emulsion, and large amounts of softeners, it is difficult to enter in these systems. Therefore, active substances such as alpha-hydroxycarbonate acid in the form of liquids with low viscosity impregnating cosmetic wipes, exhibit stickiness when applied to the skin.

The first aspect of the present invention is the substrate. Preferably, the substrate is insoluble in water substance. The term “water-insoluble” is meant that the substrate is not soluble in water or not easily disintegrates when immersed in water. Another advantage of the substrate in combination with an active substance is that first it helps the penetration of active compounds. The substrate is also significantly better than the simple liquid or gel product, as it allows for more accurate application to the skin and helps to avoid use on sensitive areas such as the eye area, where the careless application of styptic composition would cause irritation.

As the substrate can be used in a wide range of substances. Desirable the following non-restrictive features: (i) sufficient intensity hydration during use, (ii) sufficient abrasiveness, (iii) sufficient ability to swell (loft) and porosity, (iv) sufficient tight is th (v) the appropriate amount, and (vi) lack of interaction with components of the impregnating composition.

Non-limiting examples of suitable substrates that meet the above criteria include nonwoven substrates, woven substrates, getoperationname substrates, air-bound substrates and the like. In preferred embodiments, the implementation used non-woven substrates, as they are cheap and easily available among a variety of materials. The term “nonwoven” means that the layer consists of fibers which are not woven into a fabric but rather are formed into a sheet (layer), in particular tissue. Fiber can be either undirected (i.e. randomly placed), or they can be combed (i.e. combed so as to be oriented primarily in one direction). In addition, the nonwoven substrate can consist of a combination of layers undirected or combed fibers.

The nonwoven substrate can consist of a range of materials, both natural and synthetic. The term “natural” means that the materials derived from plants, animals, insects or from by-products. The term “synthetic” means that the material receives mainly made from various people the mother of the crystals or of the material, which is usually fibrous tissue composed of any conventional synthetic or natural fiber yarns or mixtures thereof.

Non-limiting examples of natural materials that are applicable in this invention are silk fibers, keratin fibers and cellulose fibers. Non-limiting examples of keratin fibers include fibers selected from the group comprising fiber wool, camel wool fiber and the like. Non-limiting examples of cellulosic fibers include fibers selected from the group consisting of fibre wood pulp, cotton fibre, hemp fibre, jute fibre, flax fibre and mixtures thereof. Fiber wood pulp are preferred, while cotton fibers (e.g. cotton wool pads) usually avoid.

Non-limiting examples of synthetic materials that are applicable in this invention include materials selected from the group comprising acetate fibers, acrylic fibers, fibers of cellulose ethers, modacrylic fibers, polyamide fibers, polyester fibers, polyolefin fibers, fibers of polyvinyl alcohol, fiber, artificial silk and mixtures thereof. Examples of some of these synthetic materials include acrylics such as acrylic® (Acrilan), creslan® (Creslan) and fiber-based and is of isonitrile, orlon® (Orion); fiber cellulose ethers, such as cellulose acetate, Arnel® (Arnel) and Asel® (Acele); polyamides, such as nylony (Nylons) (e.g., nylon 6, nylon 66, nylon 610, and the like); polyesters, such as fortrel® (Fortrel), model® (Kodel) and fibers of polyethylene terephthalate, Dacron® (Dacron), polyolefins, such as polypropylene, polyethylene; polyvinyl acetate fibers, and mixtures thereof.

Non-woven substrates made from natural materials consist of cloths or sheets, most often formed by interwoven mesh of a liquid suspension of fibers.

Substrates made from natural materials, applicable in this invention, can be obtained from a wide range of commercial sources: non-limiting examples of suitable commercially available paper layers, usable here include Airtex® (Airtex), embossed loose cellulosic layer having a basis weight equal to about 85 g/m²(75 GCA), available from James River Corporation, Green Bay, WI and walkisoft® (Walkisoft), embossed loose pulp having a basis weight of 90 g/m²(75 GCA), available from Walkisoft U.S.A., Mount Holly, NC.

Non-woven substrates made from synthetic materials that are suitable in this invention can also be obtained from a wide range of commercial sources. Non-limiting is reamers suitable non-woven layer of material, suitable here include HEF 40-047, perforated getoperationname material containing about 50% rayon and 50% polyester and having a basis weight of approximately 52 grams per square meter (g/m²) (43 GCA), available from Veratec, Inc., Walpole, MA; HEF 140-102, perforated getoperationname material containing about 50% rayon and 50% polyester and having a basis weight equal to about 77 g/m²(56 GCA), available from Veratec, Inc., Walpole, MA; novaNet® 149-191 (Novenet), termovizory pattern lattice material containing about 69% rayon, about 25% polypropylene, and about 6% cotton, and having a basis weight of about 120 g/m²(100 HCA), available from Veratec, Inc., Walpole, MA; HEF nubax® 149-801 (Nubtex), sealed, perforated getoperationname material, containing about 100% polyester, and having a basis weight of approximately 84 g/m²(70 HCA), available from Veratec, Inc. Walpole, MA; kibæk® 951V (Keybak), dry-formed perforated material, containing about 75% rayon, about 25% acrylic fibers and having a basis weight of approximately 52 g/m²(43 GCA), available from Chicopee Corporation, New Brunswick, NJ; kibæk® 1368, perforated material, containing about 75% rayon, about 5% Polief the RA and having a basis weight approximately 47 g/m²(39 GCA), available from Chicopee Corporation, New Brunswick, NJ; duraglas® 1236 (Duralace), perforated getoperationname material, containing about 100% rayon, and having a basis weight equal to from about 48 g/m²(40 HCA) to about 138 g/m²(115 HCA), available from Chicopee Corporation, New Brunswick, NJ; duraglas® 5904, perforated getoperationname material, containing about 100% polyester, and having a basis weight equal to from about 48 g/m²(40 HCA) to about 138 g/m²(115 HCA), available from Chicopee Corporation, New Brunswick, NJ; Sontara® 8868 (Sontaro), getoperationname material containing about 50% cellulose and about 50% polyester, and having a basis weight of approximately 72 g/m (60 HCA), available from Dupont Chemical Corp.

For the purposes of the present invention is preferable for the wipes are non-woven substrates, especially from mixtures of artificial silk/polyester in the ratio of from 10:90 to 90:10, preferably in ratios of from 20:80 to 80:20, optimally from 40:60 to 60:40 by weight. The most preferred cosmetic wipes are wipes for wiping out non-woven 70:30 artificial silk/polyester.

The substrate can be manufactured in a wide range of species and forms. Basically, the substrate is a form salve the key for one-time use. Mainly napkins folded in a Z-shaped structure. They can be separated from each other by spacers, but preferably gaskets no. Z-shaped addition consists of a Central strip bounded by the strips of the top and bottom of the wing.

Strip the top and bottom of the wing is essentially the same width and substantially half the width of the Central fringe. Each napkin is folded in the middle in the direction orthogonal to the direction of education in the form z Mainly the size of the wipes may at length be in the range from 10 to 40 cm, preferably from 15 to 30 cm, optimally from 18 to 24 see the Width of the napkin may be in the range from 8 to 30 cm, preferably from 10 to 25 cm, optimally from 15 to 20 cm

Anywhere from 5 to 100, preferably from 10 to 50 single wipes can be contained in the distribution package, preferably in a package that is not permeable to moisture. During storage and between retrievals napkins package again usually sealed with a sticky strip that covers the hole for removing. You can also use the bags, containing a single napkin.

The substrates of this invention can optionally contain two or more layers, and each has a different structure and abrasiveness. Different patterns can be the result of using different combinations of mA the materials or the use of the substrate, having a more abrasive side to exfoliate and more soft absorbent side for gentle cleaning. In addition, the individual layers of the substrate can be manufactured so that they had different color, thereby helping the user to further distinguish the surface.

The second important element of this invention is the alpha hydroxycarbonate acid. This term implies not only the form of the acid, but also its salts. Typical cationic protivoanemi for the formation of salts are the cations of alkali metals, alkaline earth metals, ammonium, With₂-C₈trialkanolamines and mixtures thereof. The term “alpha-hydroxycarbonate acid” includes not only hydroxyacids, but also alpha-ketoacids and related compounds polymeric forms of hydroxyacids.

Alpha hydroxy acids are organic carboxylic acids having one hydroxyl group attached to the alpha carbon adjacent to carboxypropyl. The General structure is the following:

(Ra)(Rb)C(OH)COOH

where Ra and Rb, independently, represent H, F, Cl, Br, alkyl, aralkyl or aryl group and a saturated or unsaturated, isomeric or neizmerno, straight or branched chain or cyclic form, having 1 to 25 carbon atoms. In addition, Ra and Rb optionally can be substituted for what HE Cho, COOH and alkoxygroup having 1 to 9 carbon atoms. Alpha hydroxy acids can exist in the form of such stereoisomers as D, L and DL forms when Ra and Rb are not identical.

Typical alkyl, kalkilya and aryl groups for Ra and Rb include methyl, ethyl, propyl, isopropyl, butyl, pentyl, octyl, lauryl, stearyl, benzyl and phenyl, etc. alpha-hydroxy acid of the first group can be subdivided into (1) alkyl-alpha-hydroxy acid, (2) aralkyl - and aryl-alpha-hydroxy acids, (3) polyhydroxy-alpha-hydroxy acid, and (4) polycarboxylic alpha-hydroxy acids. The following are typical examples of alpha hydroxy acids in each subgroup:

(1) Alkyl-alpha-hydroxyacids

2-Gidrokshibutanova acid (glycolic acid, hydroxyestra acid)

2-Hydroxypropanoic acid (lactic acid)

2-Methyl-2-hydroxypropanoic acid (methylmalonate acid)

2-Hydroxybutanoic acid

2-Hydroxypentanal acid

2-Hydroxyhexanoic acid

2-Gidroksipropanova acid

2-Hydroxyoctanoic acid

2-Hydroxynonanoic acid

2-Hydroxydecanoic acid

2-Hydroxyalkanoate acid

2-Hydroxydecanoate acid (alpha-gidroksilaminov acid)

2-Hydroxyatrazine acid (alpha-hydroxypyridinone acid)

2-Hydroxyhexadecanoic acid is the alpha hydroxypyrimidinone acid)

2-Hydroxyoctadecadienoic acid (alpha-hydroxystearate acid)

2-Hydroxyalkanoate acid (alpha-hydroxyechinenone acid)

(2) Aralkyl - and aryl-alpha-hydroxyacids

2-Phenyl-2-gidrokshibutanova acid (mandelic acid)

2,2-Diphenyl-2-gidrokshibutanova acid (acid benzyl)

3-Phenyl-2-hydroxypropanoic acid (phenylmalonate acid)

2-Phenyl-2-methyl-2-gidrokshibutanova acid (atractiva acid)

2-(4′-Hydroxyphenyl)-2-gidrokshibutanova acid (4-hydroxymandelate acid)

2-(4′-Chlorophenyl)-2-gidrokshibutanova acid (4-charmingalina acid)

2-(3′-Hydroxy-4′-methoxyphenyl)-2-gidrokshibutanova acid (3-hydroxy-4-methoxymandelic acid)

2-(4′-Hydroxy-3′-methoxyphenyl acid)

3-(2′-Hydroxyphenyl)-2-hydroxypropanoic acid [3-(2′-hydroxyphenyl)lactic acid]

3-(4′-Hydroxyphenyl)-2-hydroxypropanoic acid [3-(4′-hydroxyphenyl)lactic acid]

2-(3′,4′-Dihydroxyphenyl)-2-gidrokshibutanova acid (3,4-dihydroxyindoline acid)

(3) Polyhydroxy-alpha-hydroxyacids

2,3-Dihydroxypropane acid (glyceric acid)

2,3,4-Trihydroxybutane acid (isomers; ritrova acid, trenova acid)

2,3,4,5-Tetrahydroxypregna acid (isomers; Rubanov the I acid, erbenova acid, celonova acid, lisanova acid)

2,3,4,5,6-Pentahydroxyflavone acid (isomers; Aronova acid, ultranova acid, gluconic acid, MANOVA acid, Galanova acid, Ionova acid, haladova acid, Talanova acid)

2,3,4,5,6,7-Hexahydroterephthalate acid (isomers; glucoheptonate acid, galactosaemia acid, etc.)

(4) Polycarboxylic alpha-hydroxyacids

2-Hydroxypropan-1,3-diva acid (castronova acid)

2-Hydroxybutane-1,4-diva acid (malic acid)

2,3-Dihydroxybutyl-1,4-diva acid (tartaric acid)

2-Hydroxy-2-carboxypentyl-1,5-diva acid (citric acid)

2,3,4,5-Tetrahydroxypregna-1,5-diva acid (isomers: sugar acid, mucus acid)

(5) the Lactone form

Typical lactone forms are gluconolactone, galactarate, glucuronolactone, picturerelate, gluconolactone, ribonolactone lactone of a sugar acid, pantolactone, glucoheptonate, menanyakan and galactoglucomannan.

Typical examples of alpha-ketoacids, which are suitable for this invention are the following:

2-Catatonia acid (Glyoxylic acid)

Methyl-2-catatonia

2-Ketopropane acid (pyruvic acid)

Methyl-2-ketopropane (methylpiruvate)

This is-2-ketopropane (etherpiraat)

Propyl-2-ketopropane (propylparaben)

2-Phenyl-2-catatonia acid (benzylmorphine acid)

Methyl-2-phenyl-2-catatonia (methylbenzofuran)

Ethyl-2-phenyl-2-catatonia (ethylbenzonitrile)

3-Phenyl-2-ketopropane acid (phenylpropanolamine acid)

Methyl-3-phenyl-2-ketopropane (methylphenylene)

Ethyl-3-phenyl-2-ketopropane (ethylvinylacetate)

2-Geobotanica acid

2-Katapetasma acid

2-Ketohexose acid

2-Katagamuwa acid

2-Ketocona acid

2-Methododology acid

Methyl-2-ketosteroid

II. Dimeric and polymeric forms of hydroxyacids

When two or more molecules hydroxycarbonic acids or identical or non-identical compounds interact chemically with each other, will form a dimeric or polymeric compounds. Such dimeric and polymeric compounds can be divided into three groups, namely: (a) acyclic esters, (b) cyclic esters and (C) mixed dimers and polymers.

Typical examples of acyl esters hydroxycarbonic acids suitable for this invention are the esters, are presented below.

Glycosylglycerols (glycolic glycolic acid)

Lactylate (lactate lactic acid)

Madelinemadeline

Atractivity is tat

Phenylanthranilic

Benzoylbenzoate

Glycolylated

Actinglike

Glycosylglycerols

Lastellastellina

Actinglikeallie

Glycosylphosphatidyl

Laterlaterlaterlater

Glycosylphosphatidylinositol

Polyglycolic acid and polylactic acid

The amount of alpha hydroxycarbonic acids may vary in the range of from about 0.01 to about 20%, preferably from about 0.1 to about 15%, more preferably from about 1 to about 10%, optimally from about 3 to about 8% by weight of the composition, which impregnate the substrate.

The compositions of this invention when placed in water will have a pH not higher than 6.5, preferably from about 6.0 to about a 2.0, more preferably from about 5.5 to about 2.5, more preferably from about 5.0 to about a 3.0, preferably from about 4.5 to about 3.5. The composition can be placed on cosmetic wipes in the dry state and is activated by the buyer by moistening with water. In a preferred embodiment, the compositions of this invention are pre-prepared liquid compositions with low viscosity. Typical viscosity may be in the range from 0.5 to 100 centipoise, preferably from about 2 to PR is about 20 centipoise at 20° C (Brookfield RVT).

The amount of impregnating composition relative to the substrate may be in the range from about 20:1 to 1:20, preferably from about 10:1 to 1:10, and preferably from about 2:1 to about 1:2 by weight.

Usually in the compositions of this invention include a humidifier. Moisturizers usually are polyols. Typical examples of polyols include glycerin, diglycerin, polyalkylene glycols and more preferably alkylenedioxy and their derivatives, including propylene glycol, dipropyleneglycol, polypropyleneglycol, polyethyleneglycol and derivatives thereof, sorbitol, hydroxypropionic, hexyleneglycol, 1,2-butyleneglycol, 1,2,6-hexanetriol, isopropyl, ethoxylated glycerin, propoxycarbonyl glycerin and mixtures thereof. Most preferred is 2-methyl-1,3-propandiol, which can be purchased in the form of MP diol from Arco Chemical Company. The amount of polyol may be in the range from about 0.5 to about 95%, preferably from about 1 to 50%, more preferably from about 1.5 to 20%, optimally from about 3 to about 10% by weight of the impregnating composition.

Significant additional element of the product according to this invention is a silicone microemulsion. The average particle size of the silicone material in these microemulsions can be in the range from about 0.01 nm to PR is about 500 nm, preferably from about 1 to about 100 nm, preferably from about 5 to about 50 nm. The particle size can be measured using a light scattering method laser when applying 2600 D Particle Sizer from Malvern Instruments.

Microemulsions can be prepared, for example, by mechanical mixing with a high shear silicone and water or by emulsification of insoluble, nonvolatile silicone with water and mixing the silicone emulsifier with a heated solution of emulsifier or a combination of mechanical and chemical emulsification.

As emulsifiers in the manufacture of silicone emulsions can be any surfactant or separately, or in a mixture. Preferred emulsifiers include anionic emulsifiers, such as alkylarylsulfonates, such as dodecylbenzenesulfonate sodium, alkyl sulphates, for example sodium lauryl sulfate, sulfates of alkylation, such as matriculate lauric ester peo, where n is from 1 to 20, sulfates alkylphenolic esters, such as sulfate Octylphenol ether peo, where n is from 1 to 20, and sulfosuccinate, such as dioctylsulfosuccinate.

Also suitable non-ionic emulsifiers, such as apes, such as nonylphenolethoxylate peo, where n is from 1 to 50, ethoxylates of alcohols, for example lauric alcohol peo, where n Rav is about from 1 to 50, ethoxylates esters, such as polyoxyethylenated, where the number oxyethylene units is from 1 to 30.

Silicones, which are particularly preferred for the purposes of this invention are dimethiconol, they can be linear or branched. The average number molecular weight may be in the range from about 1,000 to about 1 million, preferably from about 20,000 to about 500000, optimally from about 40,000 to about 100,000. Microemulsions can be loaded with silicone to levels that are in the range of from about 1 to 95%, preferably from about 10 to about 60%, optimally from about 20 to about 40% by weight. Ready microemulsions can be purchased from providers such as Dow Corning, General Electric, Union Carbide, Wacker Chemie, Shin Etsu and Toray Silicone Company. Especially preferred is a microemulsion linear dimethiconol with 25% silicone material with a maximum particle size equal to 40 mm, pH 6.5-8, and a combination of surfactants of triethanolamine dodecylbenzenesulfonate acid/Laureth-24, available from Dow Corning under the trade name DC 2-1870.

Compositions of the present invention, when they are presented in liquid form, and will usually be with a cosmetically acceptable bases-carriers. Typically, the base carrier is water. The quantity of base carrier may be in the range from about 0.5 to about 99%, preferably from about 1 to about 80%, more preferably from about 50 to about 70%, optimally from about 65 to 75% by weight of the impregnating composition.

In the cosmetic compositions of the present invention to protect against the growth of potentially harmful microorganisms can be included preservatives. Suitable traditional preservative compositions of this invention are alkylether para-hydroxybenzoic acid. Other preservatives, which recently began to be used include derivatives as propionate salt and some Quaternary ammonium compounds. Chemists working in the field of cosmetics, familiar with appropriate preservatives and usually choose them so that they meet the test requirements of preservatives in the contamination of the product and ensure the stability of the product. Particularly preferred preservatives are Phenoxyethanol, methylparaben, propylparaben, imidazolidinethione, dehydroacetic sodium and benzyl alcohol. The preservatives should be selected taking into account the purpose of the composition and possible incompatibilities between the preservatives and other ingredients in the composition. Preservatives are preferably used in amounts in the range from 0.01 to 2% by weight of the composition.

Songs from this is retene may additionally include herbal extracts. Illustrative extracts include extracts bag noble, green tea, skullcap, nettle roots, swertia Japanese, fennel and Aloe vera. The amount of each of the extracts can range from about 0.001 to about 1%, preferably from about 0.01 to about 0.5%, preferably from approximately 0.05 to 0.2% by weight of the composition.

The compositions may also be present secondary auxiliary ingredients. This may include vitamins, such as vitamin E acetate, vitamin C, vitamin a, palmitate, panthenol and any vitamin C. May also be present funds from irritation, including means selected from stevioside, alpha-bisabolol and glycyrrhizinate salts, each vitamin or remedy irritation will be present in amounts in the range from about 0.001 to 1.0 percent, preferably from about 0.01 to about 0.3% by weight of the composition.

In the compositions of this invention may also include emulsifiers. These emulsifiers can be anionic, nonionic, cationic, amphoteric or combinations thereof. Suitable emulsifiers are non-ionic type include₁₀-C₂₀fatty alcohols or hydrophobic acid, condensed from 2 to 100 moles of ethylene oxide or propylene oxide per mole of hydrophobic substances; C₂-C₁₀the alkyl phenols, condensed from up to 20 moles of accelerated; mono - and diesters of fatty acids and ethylene glycol; monoglycerides of fatty acids; sorbitan, mono - and di-C₈-C₂₀fatty acids; copolymers (ethylene oxide/propylene oxide) and polyoxyethylenesorbitan, and their combinations. Alkylpolyglycoside and fatty amides saccharides (for example, methylglucamide) are also suitable non-ionic emulsifiers. Especially preferred as emulsifying agent is hydrogenated castor wax, alkoxycarbonyl 40 mol of ethylene oxide, which is commercially available as Cremophor RH-400® (Cremophore).

You can also use mild emulsifiers are anionic and amphoteric types. Particularly preferred examples of anionic emulsifiers include lauroamphoacetate salt and sarcosinate salt. Preferred amphoteric emulsifiers include cocamidopropylbetaine and dimethylbutan.

The amount of emulsifiers may be in the range from about 0.05 to about 20%, preferably from about 0.1 to about 5%, optimally from about 0.5 to about 0.8% by weight.

Systems with low pH containing groups of fatty acids (C₁₀-C₂₂-alkyl), such as lauroamphoacetate, as it was found, emit unpleasant odors. While not wishing to be bound by theory, it can be assumed that the hydrolysis of surface-active substances with fatty acid groups of riodic to the elimination of these groups. Thus formed foul-smelling fatty acids. Unexpectedly, it was found that silicone microemulsions, such as dimethylaniline microemulsions, effectively suppress the occurrence of the odor.

These sealing compositions of this invention can have a pH in a certain interval, although it is preferable that they had a relatively low pH, for example pH from about 2 to 6.5, preferably from 2.5 to about 4.5.

Except for the working and comparative examples, or where the exact values, all numbers in this description indicating amounts of substances that need to be understood as modified by the word “about”.

The following examples will more fully illustrate variations of the embodiment of the present invention. All parts, percentages and proportions shown here and in the accompanying claims presented by weight, unless otherwise indicated.

EXAMPLES 1-8

Table 1 provides a list of drugs that are suitable for the impregnation of the cellulosic substrate, forming cosmetic napkin. The pH of the obtained solution of the composition is in the range from about 2.8 to about 4.0.

Example 9. A study was conducted on the evaluation of the effects of silicones and other substances on the stability and reducing the stickiness at low pH products in cosmetic wipes coated with hydroxycarbonate acid. Wipes impregnated with the drug, essentially similar to example 1, except that dimethiconol microemulsion was replaced by substances, presented in table 2 with a specific level of use. Each cloth (weight 1.8 g; size of 6 inches by 8 inches) impregnated amount equal to 4 grams. Stability refers to the compatibility of the liquid phases, which are impregnated wipes. Scores were “good” for homogeneous liquids, “good enough” - for liquids with only a small amount of sludge at the top and “bad” for significant phase separation. The adhesiveness was evaluated by a trained evaluator and it was determined quantitatively on the touch sense finger.

Almost all asilicone substances had no beneficial effect on improvement in terms of stickiness caused hydroxycarbonic acids. Dimethiconol emulsion work well to remove the stickiness. However, these emulsions give poor stability of liquid drugs. Only the microemulsion of dimethiconol not only maintained good physical stability, but at the same time effectively prevent stickiness.

The preceding description and examples illustrate some variants of the embodiment of the present invention. In light of this, all possible variations and modifications that will be offered by experts in this field, enter the nature and scope of this invention.

1. Cosmetic napkin containing

(a) a water insoluble substrate;

(b) a cosmetic composition, impregnating su the strata, including

i) alpha-hydroxycarbonyl acid;

ii) a silicone microemulsion;

iii) the composition in water, having a pH not higher than 6.5.

2. Cosmetic napkin containing

(a) a water insoluble substrate;

(b) a cosmetic composition, a sealing substrate, including

i) an alpha-ketoacid and polyglycolic and polylactic acid;

ii) a silicone microemulsion;

iii) the composition in water, having a pH not higher than 6.5.

3. Cosmetic napkin according to claim 1 or 2, further comprising beta-hydroxycarbonyl acid.

4. Cosmetic napkin according to claim 1, in which the alpha hydroxycarbonate acid selected from the group comprising glycolic, lactic, hydroxyoctanoic acid and mixtures thereof.

5. Cosmetic napkin according to any one of the preceding paragraphs, in which the pH of the cosmetic composition is in the range from 2.0 to 6.0.

6. Cosmetic napkin according to claim 5, in which the pH of the cosmetic composition is in the range of 3.5 to 4.5.

7. Cosmetic napkin according to any one of the preceding paragraphs, in which the silicone microemulsion is dimethiconol microemulsion.

8. Cosmetic napkin according to claim 7, in which the silicone material in the microemulsion has a particle size in the range from 0.01 to 500 nm.

9. Cosmetic napkin of claim 8, the silicone material which in the microemulsion has a particle size in the range of 5 - 50 nm.

10. Cosmetic napkin according to any one of the preceding paragraphs, in which hydroxycarbonate acid is present in an amount of 0.1 - 15% by weight of the composition.

11. Cosmetic napkin according to any one of the preceding paragraphs, in which the microemulsion is present in an amount of 0.1 - 20% by weight of the composition.

12. Cosmetic napkin according to any one of the preceding paragraphs, in which beta-hydroxycarbonyl acid is salicylic acid.

13. Cosmetic napkin containing

(a) a water insoluble substrate;

(b) a cosmetic composition, a sealing substrate, including

i) alpha - or beta-hydroxycarbonyl acid;

ii) a surfactant containing group₁₀-C₁₂fatty acids, hydrolyzable at low pH;

iii) the composition in water, having a pH not exceeding 6,8.

14. Cosmetic napkin according to any one of the preceding paragraphs, in which the acid is present as a salt of the acid and salt is selected from ammonium salts, alkali metal, alkaline earth metal, alkanolamine and mixtures thereof.