MX2008008295A - Method for lengthening keratin fibers - Google Patents

Abstract

There is a method for lengthening keratin fibers. The method has the steps of a) applying to the keratin fibers a composition having a solvent and one or more polymers soluble or solubilizable in the solvent b) allowing the solvent to evaporate. The composition is applied in an amount sufficient to lengthen the keratin fibers. There are also other methods for lengthening keratin fibers. There is also a mascara composition.

Description

METHOD FOR EXTENSION OF KERATIN FIBERS BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for elongating keratin fibers of the scalp, eyebrows or eyelashes. 2. Description of the Related Art Mask compositions are commonly used by women to enhance and enhance the appearance of the eyelashes. Such increases may include the imparting of color or tone, volume, i.e., thickness and length, and curl. The volume and length have been increased by the inclusion of fibers in the mask compositions. For example, U.S. Patent No. 6,726,917 discloses a volumizing and elongation mask composition having water soluble, oil soluble fibers, pigments, and film formers. U.S. Patent No. 6,656,487 discloses a composition having fibers and a copolymer having carboxylate groups and polydimethylsiloxane groups. However, since the size of the fibers that can be incorporated in a mask composition has practical limits, the benefit to be obtained when incorporating the fibers is also limited. A means employed in the art to lengthen the lashes to a considerable degree is to apply lashes Inserts, which are applied when joining fibers to the base of the eyelashes with an adhesive. The use of false eyelashes can be difficult and / or require professional application. Another means employed in the art for lengthening tabs is to create length through multiple applications of a single composition or multiple sequential applications of two or more different compositions. In the first technique, a formulation of a composition (hereinafter referred to as "individual composition") is applied as a single layer and allowed to settle or dry. Then a second layer of the individual composition is applied on the individual layer. The second layer adds incremental length beyond that of the first layer. The application of the individual composition can be repeated as many times as necessary to produce the length of the desired flange. The individual compositions are commonly wax-based or polymer-based. PCT Application No. 95/15741 discloses a mixture of waxes to impart properties such as hardness and adhesion of the film to the flange. U.S. Provisional Patent Application No. 20020168335A1 discloses a cosmetic composition having a wax and a polymer. In the second technique, two different compositions are applied sequentially. In such sequenced systems, the first composition, which is typically clear or white in color, it is applied to the flange to impart a degree of elongation and it is allowed to settle or dry. Once the first composition has settled, the second composition, which is typically of a color such as black, brown or blue, is applied over the primary composition by imparting the additional length. In the European patent application No. 1516612A2, a washable mask is applied to the eyelashes and followed by the application of a waterproof mask. U.S. Provisional Patent Application No. 2005500613 9A1 discloses a sequenced system employing a composition having fibers in either a washable or waterproof mask. The use of the techniques of multiple applications mentioned in the above to lengthen the lashes is time consuming since the changes in the length are incremental and gradual. It would be desirable to have a method. to lengthen keratin fibers, such as those of the scalp, eyebrows and eyelashes, to a considerable degree. It would be desirable additionally for such elongated keratin fibers that last for a prolonged period of time. There is a need for consumption in a fast and effective way to lengthen lashes without using false eyelashes or products that depend on multiple applications. BRIEF DESCRIPTION OF THE INVENTION The present invention provides a composition for application to keratin fibers, such as those of the scalp, eyebrows and eyelashes. The present invention also provides a filament forming composition for imparting length to keratin fibers, such as those of the scalp, eyebrows and eyelashes. The present invention further provides a method for imparting length to keratin fibers, such as those of the scalp, eyebrows and eyelashes. The present invention still further provides a method for imparting length to the keratin fibers for an extended period of time. According to these and other advantages and lengths of the present invention, there is a method for imparting length to the keratin fibers, which include the eyelashes. The method has the steps of a) applying to the keratin fibers a composition having a solvent and one or more polymers that are soluble or dispersible in the solvent and b) allowing the solvent to evaporate. The one or more polymers are present in about 25% by weight or more based on the weight of the composition. The composition exhibits a range of oscillatory tension from about 700 to about 10,000 passages. The composition is applied in an amount sufficient to impart length to the keratin fibers.

According to other advantages and benefits of the present invention, there is another method for elongating keratin fibers. The method has the step of applying to the keratin fibers a composition having one or more polymers wherein the composition is capable of being stretched like a filament. According to these and other advantages and benefits of the present invention, there is another method for elongating keratin fibers. The method has the step of applying to the keratin fibers a composition having an amorphous solid wherein the composition is capable of being stretched like a filament. According to these and other advantages and benefits of the present invention, there is a mask composition. The composition has a solvent and one or more polymers soluble or dispersible in the solvent. The one or more polymers are present in an amount sufficient to impart filamentous extensions to the keratin fibers and allow the solvent to evaporate. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 represents a graph diagram of sinusoidal waveforms for stress and strain functions. Fig. 2 represents a vector representation of the function G '' / G '.

DETAILED DESCRIPTION OF THE INVENTION It was surprisingly found that there could be a method for imparting length to keratin fibers, such as hair fibers of the scalp, eyebrows or eyelashes, to a considerable degree. It was also surprisingly found that there could be a method for imparting length to the keratin fibers for a prolonged period of time. The method of the present invention is directed to the application of a composition to the keratin fibers, particularly the eyelashes. The composition is filament former and has the effect of extending the length of the keratin fibers, such as existing eyelash hairs. The composition exhibits physical properties such that the filaments extend to a desired length and thickness. In addition, optionally, the composition can impart a curl effect to the keratin fibers, (and to the filamentous extensions thereof) in the evaporation of the solvent (s) of the composition. The unique characteristics of the present invention are due to individual materials and combinations of materials. Rheological tests can clearly demonstrate the distinction of the present invention in terms of physical characteristics. The composition exhibits plastic deformation in response to an applied force (the sliding of the brush or applicator) resulting in the elongation. After the formation, the composition fractures leaving filaments on the ends of the keratin fibers. The physical behavior of the composition can be characterized through rheometry. Many types of rheological techniques and test procedures can be employed in the characterization of the present invention. Several alternative tests and test modifications can be devised and the results reported using one or more of a variety of descriptors and or units by those of skill in the science of rheometry. Therefore, the following description is a possible rheometric procedure in which the fundamental description is intended to cover all such alternatives, modifications and variations. Rheometry generally refers to the experimental techniques used to determine the rheological properties of materials, that is, quality and quantitative relationships between deformations and stresses. Forced harmonic oscillation is a dynamic rheometric test in which both tension and stress vary harmonically with time, and both viscous and elastic parameters are derived from the response of the material. Such tests are carried out in the linear viscoelastic regime, which is characterized by a linear viscosity response and dynamic elasticity with the increase of the attention span. Such tests can be carried out using a typical sinusoidal oscillation experiment. The waveforms of applied stress and resultant stress can be described as follows: s = s0 eos 8t? =? 0 eos (8t - d where so is the amplitude of tension;? O is the amplitude of effort; oo = 2pf ~ is the angular frequency, t is the time, and d is the phase delay (angle of loss). Sinusoidal waveforms for the stress and strain functions are illustrated in Figure 1. The phase delay and the amplitude ratio (so / Yo) will generally vary with frequency, but material properties are considered under linear viscoelastic conditions. an ideal solid, d = 0o, and the response is purely elastic, while a Newtonian fluid produces a purely viscous response, d = 90. Material functions can be described in terms of complex variables that have both real and imaginary parts. Thus, using the relationship: Cosx + jSin x = eJpt where j = * J- | Then the tension and effort can be expressed as follows: where (? o '1) is called the amplitude of complex effort.

The shear storage module (or storage module, for short) that represents the phase (elastic) component of the oscillatory flow, is defined as follows: storage modulus G '~ = -2- C? S d where G 'is the stress in the phase with the stress in a deformation of sinusoidal shear stress divided by tension; it is a measure of the stored energy recovered by the cycle. The out-of-phase (viscous) component is called the shear loss module (or lost module, for short): modulo Q G * = of losses = _ 5. Sin < 5 where G "is the tension of 90 ° outside the phase with the stress divided by the force. It is a measure of the energy dissipated or lost.

The complex dynamic shear modulus, G *, is then defined as follows: complex voltage amplitude, ~ ~ G * = - - = Cos d + ^ -j Sm d amplitude of complex stress and Q? Q G * = G '+ J G "Tan d = G" / G' The function G '' / G 'divides the relative importance of viscous to elastic contributions for a material at a given frequency. A vector representation of the modules is illustrated in Figure 2. The point at which G 'and G "intercept and result in a distinct, rapid and sustained decrease in G' and G" is known as the tangent. of losses od tan, which is G '' / G '. The tangent of losses is a measure of the ratio of loss of energy to energy stored in a cyclic deformation. This is the point at which a material is said to have lost its elastic behavior. The cosmetic composition exhibits an elastic profile that can be defined within the stress-strain relationship as a range of oscillatory stress reported in pascals. In concentrated particle suspensions, the oscillatory stress can favor the disorder at the ordered transition at a point of measurable performance. Under oscillating shear stress, the cosmetic composition can surprisingly sustain great efforts compared to the prior art compositions. When tested at 25 ° C, using a standard 2 °, 40 mm steel cone, at an angular frequency of 10 rad / sec, the composition of the present invention exhibits particle orientation or enters an ordered state within the range of oscillating shear stress from about 500 passages to about 10,000 passages, preferably from about 800 passages to about 5000 passages, and much more preferably from about 900 passages to about 2500 passages. The compositions of the prior art under the same test conditions become routinely ordered below 500 passages. While you do not want to be related by any theory, the elastic behavior in these ranges can enable the composition to extend in the filament form for an average length within a desired minimum and maximum range. The composition exhibits a degree of plasticity sufficient to allow the composition to extend into a filament when pulled to still provide a minimum length of -finally breaking or yield at a maximum length. In the breaking, the filament experiences less elastic recovery than the prior art compositions but instead exhibits a degree of plastic deformation in response to an applied force that results in an instantaneous and non-reversible elongation. The present invention can be configured as a mask such that the filamentary extension is stretched or stretched to a predetermined length, with a known fracture point, such that the filament breaks autonomously and remains fixed to the keratinous fiber and in the elongated state. The filament is a semi-hardened condition at the time of rupture and hardens completely through time as the solvent evaporates. In addition, a mask composition can be formulated such that the filaments can be stretched to the desired length by the applicator and held at a desired point for a period of time in order to allow the filament to harden. Subsequent movement of the applicator after the hardening point would then result in the filament bill or breakage at the point of attachment of the applicator / composition. The composition can be formulated to produce the desired degree of plasticity. Although not intended to be limiting, typical ranges of filament extension are up to 200 mm when the keratinous fibers are head hair and when the keratinous fibers are lashes more typically from 0.01 mm to 5 mm. The composition has one or more polymers capable of being formulated and subsequently stretched in the form filamentous The polymers can be hydrophilic, hydrophobic or any combination thereof depending on the desired properties of the composition. The polymers can be any known in the art to be safe for use on the skin and eyelashes. The polymers can optionally be selected from those known to be useful as film formers. The polymers are present in an amount sufficient to allow the formation of a fluid composition adapted to be stretched in a filament. The polymers are preferably present from about 15% by weight to about 75% by weight based on the total weight of the composition. More preferably, the polymers are present from about 35% by weight to about 45% by weight. Most preferably, the polymers are present from about 25% by weight to about 30% by weight. The polymer (s) may be of natural or synthetic origin. Suitable hydrophilic polymers include, but are not limited to the following, acrylics (acrylates) polyacrylates, polymers and copolymers of acrylamide and quaternary salts thereof, urethanes, polyurethanes, polyesters, polysaccharides, polyamides, polyols, polyethers, cellulosics, proteins, acids polyamino, esters derived from rosin, latex, or any of the combinations of same. Suitable hydrophobic polymers include, but are not limited to, polyolefins, polymers and copolymers of polyvinylpyrrolidone, polyethylenes, polyalkyls, polystyrenes, triglycerides, epoxy resins, shellacs or any combination thereof. The composition can be aqueous or anhydrous. The composition can take any fluid form, such as a solution, suspension, dispersion, or emulsion. An emulsion can be of any conventional type, which includes oil in water, water in oil, silicone in water, water in silicone, wax in water and water in wax. The composition typically exhibits the physical consistency of a lotion, cream, or gel. The physical consistency is such that the composition can be easily applied to the keratinous fibers with a brush, comb or other suitable applicator. In a preferred embodiment, the composition can be applied to the eyelashes like a mask with a mask brush. The composition contains one or more cosmetically acceptable solvents in which the polymer is soluble or dispersible. Water is a preferred solvent in aqueous compositions. Other useful hydrophilic solvents include lower alcohols and polyhydric alcohols. Useful hydrophobic solvents include volatile and non-volatile oils. The term "volatile" means that the oil has a mean vapor pressure, or a vapor pressure of at least 2 mm of mercury at 20 ° C. The term "non-volatile" means that the oil has a vapor pressure of less than 2 mm of mercury at 20 ° C. Suitable volatile oils include linear silicones, cyclic silicones, paraffinic hydrocarbons, or mixtures thereof. Various paraffinic straight or branched chain hydrocarbons having from 5 to 40 carbon atoms, more preferably from 8 to 20 carbon atoms are suitable for use in the present invention. Particularly preferred are the isoparaffins of Cs-C2o, such as those disclosed in U.S. Patent Nos. 3,439,088 and 3,818,105, both of which are incorporated herein by reference. Suitable non-volatile oils may also include naturally occurring glyceryl esters of fatty acids or triglycerides. Examples include lanolin oil, triisocetyl citrate, C10-C? 8 triglycerides, coconut oil, corn oil, palm oil and sunflower seed oil. Suitable oils also include synthetic or semi-synthetic glyceryl esters, for example mono-, di-, and fatty acid diglycerides that have been modified. Modified glycerides include, for example, acetylated castor oil, glyceryl stearate, glyceryl dioleate, glyceryl distearate, glyceryl myristate, PEG castor oils, glycerol oleates of PEG and glycerol stearates of PEG. Other non-volatile oils Suitable include hydrogenated polyisobutone, squalene, fatty esters, fatty alcohols, petrolatum and mineral oil. The composition may also contain the same substances as cosmetically acceptable carriers and carriers. The solvent is present in an amount sufficient to dissolve or disperse the polymer as well as otherwise provide a sufficient degree of fluidity to the composition. The solvent is preferably present from about 10% by weight to about 85% by weight, more preferably present from about 30% by weight to about 50% by weight and most preferably present from about 25% by weight to about 35% by weight . The present invention can employ polymers having various glass transition temperatures. By mixing the polymers with varying vitreous transition temperatures, the performance properties of a composition can be formulated. In addition, plasticizers can be used to modify the glass transition temperatures of polymers to modify the performance properties of polymers or composition in general. Plasticizers are additives that soften a material either by softening the final product or by increasing the workability of the material before it hardens. Plasticizers work by embedding themselves between the chains of polymer, in order to increase the spacing or free volume. Thus, the glass transition temperature is reduced, which makes the material more flexible. Useful plasticizers include, but are not limited to, the following; fatty alcohols, fatty esters, fatty acid esters, and inorganic acid esters. Polymer solutions and polymer melts containing thermoset or thermoplastic resins exhibit unique non-Newtonian behavior under shear stress. The rheological characteristics of these polymer systems can be further modified by the addition of particulate fillers of various sizes (miera to colloidal), form (spherical to platelets), or composition. The degree of filler effect is dependent on the degree of particle dispersion, particle-particle interactions, and particle-polymer interactions. Numerous theories exist in the literature to predict and describe the flow behavior of filled polymer systems based on filler particle geometries. In the present invention, the particles can form an infiltration network in a filled polymer system under conditions of shear stress 0, yet they flow easily in a predictable manner under applied tension. This behavior known as pixotropy, is An important feature in conventional cosmetics of proper application is dependent on the rheological properties. For example, the extension of keratin fibers using polymer-based formulations requires a low viscosity for uniform deposition at the initial application and the subsequent high viscosity (formation of a rigid gel) at rest to facilitate drying processes. hardening. The degree of interaction between filler and polymer systems can be described in terms of thermodynamics using adhesion and cohesion work. The strong polymer-particle interaction, adhesion work, results in efficient network formation, thus reduced thixotropic comfort. The particle-strong particle interaction and / or cohesion work may result in deficient particle dispersion or undesirable rheological behavior. The optimal condition is placed between the two ends where the difference between the addition work and the cohesion work is less than 0. In general, the ideal particles can be selected based on their surface energy (surface chemistry) with respect to the characteristics of the polymer system with respect to each (mixtures of particles and Hama's constant), and its physical form (ie, fractal, spherical, platelet, etc.).

The cosmetic composition preferably has one or more particulate fillers. Fillers and / or useful particles include any known in the cosmetic art. These materials increase the hardening time and stiffness of the filaments formed. Examples of useful fillers include clay and organic and inorganic powders. The fillers / particles preferably have a dimensional (length / width) ratio of from about 1 to about 1000, more preferably from about 1 to about 500, and most preferably from about 1. to about 50. The fillers / particles are preferably present in about 20 to about 50% by weight, more preferably present from about 30 to about 45% by weight, and most preferably present from about 25 to about 35% by weight based on the total weight of the cosmetic composition. The composition preferably has one or more pigments, pearlescents, and / or dyes therein. Useful pigments and / or dyes include any known in the cosmetic art. Coatings and surface treatments on the pigments can also increase the gloss or satin exhibited by the mask compositions. Examples of useful pigments include titanium dioxide, zinc oxide, iron oxide, chromium oxide, ferric blue, and mica; Organic pigments include barium, strontium, calcium or aluminum lacquers, groceries and carbon black; dyes include Green # 3 D &C, Yellow # 5 D &C, and Blue # 1 D &C. pigments and / or dyes can be coated or treated with one or more compatibilizers to aid in the dispersion in either or both of the aqueous or wax phases. When silicone vehicles are used, the surface of the pigments and / or dyes treated with dimethicone co-polyol are preferred. The pearlescent agents are understood to mean iridescent particles, in particular, particles produced by certain molluscs in their shell or pearlescent particles synthesized. Pearlescent agents particularly serve to modify the texture of the composition. The pigments may be present in the composition in an amount of 1% by weight to about 50% by weight of the total weight of the composition, and preferably in an amount of about 30% by weight to about 45% by weight. The composition of the invention may additionally have any of the ingredients conventionally used in the cosmetic field in particular in the manufacture of mascara and eyelash products. The amounts of these various ingredients are those conventionally used in the cosmetic field to achieve its intended purpose, and typically vary from about 0.01% to about 20% by weight of the composition. The nature of these ingredients and their amounts should be compatible with the production of the stable compositions useful in the method of the present invention. The compositions may also include one or more of the following optional ingredients: amino acids, antioxidants, emollients, emulsifiers, eyelash protectors, eyelash penetration enhancers, fillers, humectants, moistening agents, preservatives, surfactants, thickeners, vitamins, waxes and any of the combinations of them. The composition can be applied to the eyelashes as frequently as needed to maintain the desired length. The composition is typically applied to the upper side of the natural hairs with an extension movement, outwardly (in the general direction of the extension of the hairs) with the filaments that form at the ends of the hairs until the composition breaks. or silk finishing such training. The application results in a coating on at least a portion of the natural hairs in addition to the filament formation. The composition is then dried through the evaporation of the solvent and other volatiles. The periodic reapplication will be necessary in the normal course as the filamentous extensions of the composition wear out. Filamentous extensions will exhibit a considerable degree of resistance to use and resistance to water. The filamentous extensions will maintain their integrity as long as the effect desired by the consumer. The composition can alternatively be characterized as an amorphous fluid or uniform suspension having one or more filament forming agents which are amorphous solids, preferably selected from the polymers mentioned in the foregoing. An amorphous solid is a solid in which there is no long-term order of the positions of the constituent atoms. Amorphous solids can exist in two different states, the rubbery state and the bright state. The following are examples of the present invention. Unless otherwise indicated, all percentages or parts are by weight. EXAMPLES Examples and Control Compositions useful in the method of the present invention can be prepared and tested for filament formation, flexibility, drying times and oscillatory stress compared to those of a prior art composition.

The composition of the control is designated as Sample # 1. Sample # 1 has the composition shown below in Table 1 Table 1 Sample # 1 can be prepared by the following method. Combine water, antifoaming agent, and Ti02 (titanium dioxide) and mix well with a mixer set at 50 to 100 rpm to form a mixture. Disperse slowly with PVA (polyvinyl alcohol) in the mixture, and then the addition is complete, adjust the temperature to 60 ° C to 80 ° C. During heating, add PVP (polyvinylpyrrolidone) and mix well. Cover the mixture in batches and continue and heat for 1 hour or until all the polymers dissolve. Cool the solution to 45 ° C and add the preservative. Sample # 2 has the composition established in Table 2 below Table 2 Sample # 2 is prepared by the following method. Combine water, antifoam, preservative and mix with a mixer adjusted from 50 to 500 rpm. During the additional mixing Ti02. When the addition is complete, cover the batch and adjust the mixer to 100 rmp. After 30 minutes, stop mixing. Sample # 3 has the composition set forth in Table 3 below. Table 3 DynamicX is polyurethane-14AMP-acrylate (National Starch) Sample # 3 is prepared in substantially the same manner as for Sample # 2. Sample # 4 has the composition set forth in Table 4. Table 4 Koboguard 5400IDD is a polycyclopentadiene hydrogenated by Kobo. Sample # 4 is prepared in substantially the same manner as for Sample # 2. All samples are transferred to the appropriate component with the brush and with the appropriate cloth. Each sample is applied with a brush / applied to false eyelashes. As the filaments are formed and achieve the desired length, the brush is maintained until the solvent dries and the filament separates from the brush and remains on the lashes. The time and the filaments are separated from the brush is referred to as the start time and is recorded in seconds. The number of filaments formed is recorded as the initial number of filaments. Another test is performed to analyze the flexibility of the filaments. After the start, the filament is allowed to dry for 1 minute. Then, using a clean brush, the filament is applied by brush through fourteen times. The number of remaining filaments is recorded. The higher the number of remaining filaments, the better the sample. The results are shown below in Table 5. Table 5 All samples are run on the dynamic rheometer at 25 ° C using a standard 2 ° steel cone, 40 mm. The control loses elasticity in approximately 299 pa, while the compositions of the examples they experience a loss of elasticity of approximately 1286 passages (pa). The samples exhibit markedly larger elastic intervals (approximately 4 times) compared to the control. The two compositions of the examples can be stretched in one filament while the control can not. It should be understood that the foregoing description is only illustrative of the present invention. Various alternatives and modifications can be devised by those of skill in the art without departing from the scope of the invention. Accordingly, the present invention is intended to encompass all such alternatives, modifications and variations that fall within the scope of the appended claims.

Claims (22)

1. CLAIMS 1. A method for lengthening keratin fibers, characterized in that it comprises a) applying to the keratin fibers a composition having i) a solvent and ii) one or more soluble or dispersible polymers in the solvent, and b) allowing the solvent to evaporate wherein the one or more polymers are present in an amount sufficient to impart filamentous extensions to the keratin fibers and allow the solvent to evaporate.
2. 2. The method according to claim 1, characterized in that the keratin fibers are selected from the group consisting of those of the scalp, eyebrows and eyelashes.
3. 3. The method according to claim 1, characterized in that the composition exhibits particle orientation within the range of oscillatory tension of about 500 to about 10,000 passages. .
4. The method according to claim 1, characterized in that the composition exhibits particle orientation within the range of oscillatory tension of about 800 to about 5000 pascals.
5. 5. The method according to claim 1, characterized in that the composition exhibits a loss tangent or Tan d less than one.
6. The method according to claim 1, characterized in that the polymer is present in an amount of about 15% by weight to about 75% by weight based on the total weight of the composition.
7. The method according to claim 1, characterized in that the composition further comprises fillers / particles present in about 20% by weight to about 50% by weight based on the total weight of the composition.
8. The method according to claim 1, characterized in that the solvent is present in about 100% by weight to about 85% by weight based on the total weight of the composition.
9. 9. The method according to claim 8, characterized in that the solvent is water.
10. 10. The method according to claim 1, characterized in that it also comprises a pigment, dye or pearlescent.
11. 11. The method according to claim 10, characterized in that the pigment is titanium dioxide.
12. 12. The method according to claim 1, characterized in that the keratin fibers elongate a average of up to 20 mm.
13. 13. A method for lengthening eyelashes, characterized in that it comprises a) applying to the eyelashes a composition having i) a solvent and ii) one or more polymer soluble or dispersible in the solvent, b) allowing the solvent to evaporate where the one or more polymers are present in about 25% by weight or more based on the weight of the composition, wherein the composition exhibits particle orientation within an oscillatory tension range of from about 500 to about 10,000 pascals, and wherein the composition is applied in an amount sufficient to impart filamentous extensions to the eyelashes, and allow the solvent to evaporate.
14. The method according to claim 13, characterized in that the composition exhibits particle ordering within an oscillatory stress range of about 800 to about 5000 pascals.
15. 15. The method. according to claim 13, characterized in that the polymer is present in an amount of about 15% by weight to about 75% by weight based on the total weight of the composition.
16. 16. The method of compliance with the claim 13, characterized in that the solvent is present in about 10% by weight to about 85% by weight based on the total weight of the composition.
17. 17. The method according to claim 13, characterized in that the solvent is water.
18. 18. The method according to claim 13, characterized in that it also comprises a pigment, dye or pearlescent.
19. 19. The method according to claim 13, characterized in that the eyelashes are lengthened by an average of up to 20 mm.
20. 20. A method for elongating keratin fibers, characterized in that it comprises applying to the keratin fibers a composition having one or more polymers wherein the composition is capable of being stretched like a filament.
21. 21. A method for elongating keratin fibers, characterized in that it comprises applying to the keratin fibers a composition having an amorphous solid in which the composition is capable of being stretched like a filament.
22. 22. A mask composition, characterized in that it comprises: a solvent and one or more soluble or dispersible polymers in the solvent, wherein the one or more polymers are present in an amount sufficient to impart filamentous extensions to the keratin fibers.