Shaving supplement components

Abstract

The present invention provides a shaving aid composition and a method for producing the same. [Solution] The shaving aid composition comprises a water-soluble polymer such as polyethylene oxide and a cellulosic cationic polymer such as polyquaternium. The shaving aid composition may be substantially anhydrous and solid. The wet shaving device may contain the shaving aid composition. For example, the shaving aid composition may be in shaving aid flap, lubrication box or any combination thereof. A method for producing the shaving aid may include the steps of selecting a water-soluble polymer, selecting a cationic polymer, and combining the water-soluble polymer and the cationic polymer to form the shaving aid composition. A method for using the shaving aid composition may include the steps of contacting the shaving aid composition with a solvent to activate the water-soluble polymer and depositing at least the cellulosic cationic polymer from the wet shaving device onto the hair and / or skin during shaving.

Description

Technical Field

[0001] Cross - reference to Related Applications This application claims priority to U.S. Provisional Patent Application No. 63 / 074,226, filed on September 3, 2020, the content of which is incorporated herein by reference in its entirety. Embodiments relate to a shaving aid composition comprising a water - soluble polymer such as polyethylene oxide and a cellulosic cationic polymer such as polyquaternium.

Background Art

[0002] Water - soluble shaving aid compositions can be hydrolyzed and deposited during shaving to provide a comfortable shaving feel. However, there is still room for significant improvement in providing a shaving aid composition that enhances shaving performance compared to commercially available shaving aid compositions.

Summary of the Invention

[0003] Embodiments relate to a shaving aid composition comprising a water - soluble polymer and a cellulosic cationic polymer having a cellulosic backbone with substituted quaternary ammonium cations. The shaving aid composition may be substantially anhydrous and solid. The shaving aid composition, as a substantially anhydrous shaving aid composition, may contain water in an amount of about 5.0% by mass or less based on the total mass of the shaving aid composition. For example, the shaving aid composition may contain water in an amount less than about 1.0% by mass based on the total mass of the shaving aid composition. The shaving aid composition may also be an aggregate of atoms or molecules held together to maintain a defined shape and / or size as a solid shaving aid composition under certain drying conditions. In any of the embodiments described above, the shaving aid composition may contain one or more auxiliary components. For example, the shaving aid composition may contain an activator, a purifying agent, a processing aid, or a combination thereof. The auxiliary components may be present in an amount of about 0.01% to about 40% by mass relative to the total mass of the shaving aid composition. For example, the total amount of auxiliary components in the shaving aid composition may be about 1.0% to about 20.0% by mass relative to the total mass of the shaving aid composition.

[0004] In any of the above embodiments, the water-soluble polymer may contain polyethylene oxide. If present, at least a portion of the polyethylene oxide may contain one or more polyethylene oxide polymers having molecular weights of about 100,000 daltons to about 10,000,000 daltons. For example, all PEOs in the shaving aid composition may have a molecular weight of about 5,000,000 daltons. In one example, the polyethylene oxide contains polyethylene glycol (PEG)-115M. For example, all PEOs in the shaving aid composition may have a molecular weight of about 8,000,000 daltons. In one example, the polyethylene oxide contains polyethylene glycol PEG-180M. In any of the above embodiments, the water-soluble polymer may be present in an amount of 20% by mass or more and 90% by mass or less based on the total mass of the shaving aid composition. For example, the water-soluble polymer may be present in an amount of about 40% by mass to about 80% by mass based on the total mass of the shaving aid composition. In any of the above embodiments, the cellulosic cationic polymer may have a nitrogen content of more than 1.1%. For example, the cellulosic cationic polymer may have a nitrogen content of more than 1.1% but less than 2.6%. In one example, the cellulosic cationic polymer may have a nitrogen content of 1.5% to 2.5%. In any of the above embodiments, the cellulosic cationic polymer may have a viscosity of less than 800 centipoise. For example, the cellulosic cationic polymer may have a viscosity greater than 100 centipoise and less than 800 centipoise. In one example, the cellulosic cationic polymer may have a viscosity of 300 centipoise to 500 centipoise.

[0005] In any of the above embodiments, the cellulosic cationic polymer may have a molar mass of less than 1,000 kilograms / mol. For example, the cellulosic cationic polymer may have a molar mass greater than 100 kilograms / mol and less than 1,000 kilograms / mol. The cellulosic cationic polymer may have a molar mass of, for example, 200 kg / mol to 800 kg / mol. In any of the above embodiments, the cellulosic cationic polymer may be present in an amount of about 15% to about 60% by mass relative to the total mass of the shaving aid composition. For example, the cellulosic cationic polymer may be present in an amount greater than 20% by mass but less than 50% by mass relative to the total mass of the shaving aid composition. In any of the above embodiments, the cellulosic cationic polymer may contain polyquaternium. For example, the polyquaternium may contain polyquaternium-10. In any of the embodiments described above, the ratio of the water-soluble polymer to the cellulosic cationic polymer may be about 1:1 to about 5:1. For example, the ratio of the water-soluble polymer to the cellulosic cationic polymer may be about 2:1 to about 4:1. The embodiments further relate to a wet shaving device comprising a shaving aid composition from any of the preceding embodiments. In one example, the shaving aid composition may be arranged in a shaving aid strip, a lubrication box, or a combination thereof. Thus, the embodiments may include the step of linking the shaving aid composition and the wet shaving device using known methods such as extrusion or compression molding.

[0006] The embodiments further relate to a method for producing any of the shaving aid compositions described in the preceding embodiments. For example, the method may include the steps of selecting a water-soluble polymer, selecting a cellulosic cationic polymer, and / or combining a water-soluble polymer and a cellulosic cationic polymer to form a shaving aid composition. Thus, the embodiments may include the step of combining the raw materials of the shaving aid composition using known methods (e.g., mixing, blending, etc.). The embodiments further relate to methods for using any of the shaving aid compositions described in the earlier embodiments. For example, a method for using a shaving aid composition may include the step of contacting the shaving aid composition with a solvent (e.g., water) to activate a water-soluble polymer (e.g., by causing the polymer to swell) and depositing at least a cellulosic cationic polymer from a wet shaving instrument onto the hair or skin during shaving. Features of the present disclosure that are considered novel, and elements characteristic of the present invention, are described in detail in the appended claims. However, the present disclosure itself, both in terms of its configuration and method of operation, can be best understood by referring to the following description of preferred embodiments obtained in connection with the appended drawings. [Brief explanation of the drawing]

[0007] [Figure 1] This graph shows the difference in average scores for each of the 13 characteristics (A1 to A13) of the exemplary shaving aid composition compared with a commercially available shaving aid control formulation, according to the embodiment. [Modes for carrying out the invention]

[0008] Embodiments include, and may consist of, any of the features and / or steps described herein, as well as any additional or optional raw materials, components, steps, or features described herein or otherwise recognized by those skilled in the art. Unless otherwise specified, all concentrations disclosed herein should be understood to be in mass percent (mass%) of the total mass of the composition. Where appropriate, the International Nomenclature for Cosmetic Ingredients (INCI) names of the raw materials / components are provided. Any range of numbers described herein is intended to include all sub-regions encompassed herein, and such ranges should be understood to include any number and / or fraction between the lower and upper values ​​expressed herein. Furthermore, terms such as “about” may refer to a deviation of ±10% unless otherwise specified.

[0009] wet shaving equipment Wet shaving devices may include shaving aid fragments. For example, shaving aid fragments can be found in commercialized products sold under the trade name SCHICK® (Edgewell Personal Care Brands, LLC). In one example, the shaving aid composition may be dispersed in a matrix of a water-insoluble material (e.g., styrene polymer, olefinic polymer, etc.) to form a shaving aid composite that can be mounted in or on a razor cartridge structure adjacent to the blade. Upon exposure to water, the shaving aid composition leaches from the matrix of the shaving aid fragments onto the hair or skin. Thus, the shaving aid composition may be disposed in erosive fragments, such as those described using the method in U.S. Patent Application Publication No. 2017 / 0216442, commonly assigned, which is incorporated herein by reference.

[0010] A wet shaving device may also include a lubrication box mounted on or adjacent to the razor cartridge. For example, a lubrication box can be found in commercialized products sold under the trade name SCHICK®. In one example, the shaving aid composition may be formed in situ on the open body of the lubrication box, or formed on the outside and then placed inside the body of the lubrication box, so that the solubilized shaving aid composition can seep out of the lubrication box during shaving through multiple openings in the lubrication box. Thus, the shaving aid composition may be contained within the lubrication box, for example, as described using the methods in U.S. Patent Publications 2011 / 0099815, 2012 / 0023750 and 2018 / 0236677 by the same applicant, which are entirely incorporated herein.

[0011] Shaving aid composition The shaving aid composition may also contain any other ingredients to enhance shaving performance. For example, the shaving aid composition may contain, but is not limited to, water-soluble polymers such as polyethylene oxide (PEO), polyvinylpyrrolidone, polyacrylamide, hydroxyethylcellulose, hydroxypropylcellulose, polyvinylimidazoline, polyhydroxyethyl methacrylate, polyvinyl alcohol, or combinations thereof. The water-soluble polymer may be present in an amount of 20% by mass or more and less than 90% by mass, preferably about 40% by mass to about 80% by mass, based on the total mass of the shaving aid composition.

[0012] Water-soluble polymers are commercially available and readily accessible. For example, PEO is commercially available from The Dow Chemical Company as POLYOX® or Foamysense® in various molecular weights and particle sizes. As is known in the industry and reference literature, the molecular weight of such POLYOX® or Foamysense® polyethylene oxides is determined primarily by viscosity data. Therefore, one or more PEOs may be selected based on molecular weights (MW) ranging from approximately 100,000 Da to approximately 10,000,000 Da, for example, from approximately 5,000,000 Da to approximately 8,000,000 Da. For example, the PEO or a portion of the PEO in the shaving aid composition may contain higher molecular weight PEO (e.g., 2,000,000 Da or more), while in other embodiments, all or part of the PEO in the shaving aid composition may contain lower molecular weight PEO (e.g., less than 2,000,000 Da). In one example, the PEO may consist of a blend of about 40% to about 80% by mass of total PEO having about 5,000,000 Da MW and about 20% to 60% by mass of total PEO having about 300,000 Da MW. In another example, the water-soluble polymer consists entirely of PEO and has about 5,000,000 Da MW. In yet another example, the water-soluble polymer consists entirely of PEO and has about 8,000,000 Da MW.

[0013] Preferably, the PEO comprises PEG-115M, which is commercially available as POLYOX® or Foamysense® Coagulant, having a MW of 5,000,000 Da, and may be present in amounts of, for example, 36% by mass, 50% by mass, or 88% by mass, with all numbers and / or fractions in between, relative to the total mass of the shaving aid composition. Furthermore or alternatively, the PEO may comprise PEG-180M, which is commercially available as POLYOX® or Foamysense® 308, having a MW of 8,000,000 Da, and may be present in amounts of, for example, 36% by mass, 50% by mass, or 88% by mass, relative to the total mass of the shaving aid composition, with all numbers and / or fractions in between.

[0014] The shaving aid composition may contain a cellulose cationic polymer. For example, the cellulose cationic polymer may contain a cellulose backbone having a substituted quaternary ammonium cation. The quaternary ammonium cation has the cationic form of the general formula R4N + , and the general formula R4N in salt form + X - It can also be characterized as follows, where (R4) refers to the four substituents on the nitrogen atom, and (X - ) refers to the counterion. The substituents of the quaternary ammonium cation may independently be, for example, substituted, unsubstituted, linear, branched, intercalated, and / or non-intercalated alkyl, aryl, alkylaryl, arylalkyl, cycloalkyl (aromatic or non-aromatic), heterocyclyl, and / or alkenyl groups. Furthermore, two or more substituents R4 may form a substituted or unsubstituted heterocyclic ring together with a nitrogen atom. The intercalated group may contain heteroatoms such as oxygen, nitrogen, sulfur, and phosphorus-containing groups (e.g., phosphinates). On the other hand, the most common counterion is chloride, but other halides (e.g., fluorides, bromides, iodides, etc.) and non-halide ions (e.g., sulfonates, saccharins, etc.) may also be used.

[0015] The cellulosic cationic polymer may be selected from one or more polyquaterniums. For example, polyquaternium-10 can be produced by reacting a salt of hydroxyethylcellulose with a trimethylammonium-substituted epoxide, which is commercially available, for example, from Amerchol Corp., Edison, NJ, in the UCARE® polymer series. Polyquaternium-10 may also be generally represented by the cellulose system name, 2-hydroxy-ethyl 2-[2-hydroxy-3-(trimethylammonio)propoxy]ethyl 2-hydroxy-3-(trimethylammonio)propyl ether, chloride (chloride salt form) (CAS No: 81859-24-7). Alternatively, UCARE® polymers may be prepared by substituting a trimethylammonium compound onto hydroxyethylcellulose, for example, as shown by the idealized structure below:

[0016] [ka]

[0017] However, not all polyquaterniums may provide significantly enhanced shaving performance in a shaving aid composition as compared to a commercialized shaving aid composition. For example, it is known from zeta potential studies that UCARE™ Polymer JR-400 has less affinity for hair than UCARE™ Polymer JR-30M, even though it has substantially the same nitrogen content %. Surprisingly, however, the shaving aid composition unexpectedly achieves better shaving performance using UCARE™ Polymer JR-400. In fact, such shaving aid compositions surprisingly outperform others having different cellulosic cationic polymers having a higher nitrogen content % and / or a higher viscosity than Polymer JR-400, which will be discussed in more detail below. UCARE™ Polymer JR-400 may be commercially available as a mixture of ≥91.0 wt % cationic agent polymer, ≤5.6 wt % water, ≤1.5 wt % sodium acetate, ≤1.5 wt % sodium chloride and ≤1.0 wt % isopropanol, based on the total mass of the mixture.

[0018] In particular, the cellulosic cationic polymer may be selected based on a nitrogen content % of greater than 1.1%, such as 1.5% to 2.2%, and / or a viscosity of less than 800 centipoises (Cps), such as 300 Cps to 500 Cps. The cellulosic cationic polymer may also have a molar mass of less than 1,000 kilograms per mole (kg / mol), such as 200 kg / mol to 800 kg / mol. Further, the cellulosic cationic polymer may be present in an amount of about 15 wt % to about 60 wt %, preferably greater than 20 wt % and less than 50 wt %, based on the total mass of the shaving aid composition. Thus, for example, Polymer JR-400 may be present in amounts of 20.1 wt %, 25 wt %, 30 wt %, 49.9 wt %, based on the total mass of the shaving aid composition, including all numbers and / or fractions therebetween.

[0019] Shaving aid compositions include auxiliary components such as cosmetically acceptable carriers, oils, sterols, amino acids, moisturizing creams, powders, pigments, dyes, pH adjusters, fragrances, cosmetic active ingredients, vitamins, preservatives, preservative enhancers, foaming agents, chelating agents, cleansers, dispersants, thickeners, stabilizers, essential fatty acids, sphingolipids, emulsifiers, antioxidants, surfactants, additional film-forming agents, chelating agents, gelling agents, thickeners, emollients, moisturizers, minerals, viscosity and / or rheochemicals. The formulation may further contain, but is not limited to, rhesus modifiers, keratolytic agents, retinoids, hormone compounds, alpha-keto acids, anti-mycobacterial agents, antifungal agents, antibacterial agents, antiviral agents, analgesics, anti-allergens, H1 or H2 antihistamines, anti-inflammatory agents, anti-irritants, antineoplastic agents, immune system enhancers, immune system suppressants, anti-acids, anesthetics, antiseptics, insecticides, skin cooling compounds, skin protectants, skin penetration enhancers, epidermal exfoliants, lubricants, dyes, depigmentants, hyperpigmentation agents, stabilizers, drugs, spherical powders, extracts (fruits, flowers, plants), absorbents, alpha and beta hydroxy acids, retinol and its derivatives, or combinations thereof.

[0020] For example, the hair removal assisting composition may contain an active agent, a purifying agent, a processing aid, or a combination thereof. The active agent preferably contains a therapeutic active agent including one or more of aloe, vitamins, moisturizers, skin softeners, moisturizing creams, coagulants, anti-abrasion agents, fragrances, hair removal agents, essential oils, antioxidants, alpha-hydroxy acids, alpha-keto acids, antibacterial agents, antifungal agents, antibacterial drugs, antiviral drugs, analgesics, anti-allergy agents, antihistamines, anti-inflammatory agents, anti-irritants, anti-neoplastic agents, immunostimulants, immunosuppressants, anti-acne agents, anti-aging agents, anesthetics, preservatives, insect repellents, skin cooling compounds, skin warming compounds, skin protectants, skin penetration enhancers, exfoliating agents, lubricants, or a combination thereof. The purifying agent preferably contains a degreasing agent, a surfactant, an enzyme, a finishing agent, an antibacterial agent, an antibacterial drug, antibacterial substances, or a combination thereof. The processing aid preferably contains an emulsifier, a plasticizer, a solubilizing agent, a flexibility-imparting agent, a rheology modifier, a filler, or a combination thereof. In various embodiments, the processing aid includes a plasticizer such as polyethylene glycol, propylene glycol, butylene glycol, pentylene glycol, glycerin, or a combination thereof; a flexibility-imparting agent containing a silicone resin, a wax, an elastomer, a polyamide, or a combination thereof; and / or a filler containing boron nitride, graphite, talc, clay, silicate, diatomaceous earth, or a combination thereof.

[0021] The auxiliary component may be present in an amount of about 0.01% by mass to about 40% by mass based on the total mass of the hair removal assisting composition. The auxiliary component may be present in an amount of, for example, 0.008% by mass, 0.1% by mass, 0.4% by mass, 1.0% by mass, 5.0% by mass, 10.0% by mass, 20.0% by mass, 44.0% by mass based on the total mass of the hair removal assisting composition, including all numbers and / or fractions therebetween. For example, the total amount of the auxiliary component in the hair removal assisting composition may be present in an amount of about 1.0% by mass to about 20.0% by mass based on the total mass of the hair removal assisting composition. In this regard, rice bran oil may be present in an amount of 0.01 to 0.5, for example, 0.01, 0.05, 0.1, 0.2, 0.03, 0.4, 0.5, etc. based on the total mass of the hair removal assisting composition, including all numbers and / or fractions therebetween.

[0022] The shaving aid composition may, as a substantially anhydrous shaving aid composition, further contain water in an amount of about 5.0% by mass or less relative to the total mass of the shaving aid composition. In this regard, one or more of the raw materials of the shaving aid composition may be associated with absorbed and / or adsorbed water, or otherwise can be supported on a substantially anhydrous shaving aid composition. For economic, source, and / or formulation reasons, it may be disadvantageous to process hygroscopic materials to be completely water-free. Therefore, for example, the shaving aid composition in a wet shaving device may contain a total of about 1.0% by mass or less of water.

[0023] Similarly, a shaving aid composition may also be an aggregate of atoms or molecules held together to maintain a defined shape and size as a solid shaving aid composition under certain dry conditions. In many end uses, it is understood that a shaving aid composition may be exposed to and absorbed by water as part of its designed function, for example, in a lubricating box that swells upon exposure to water before contact with the user's hair or skin. Therefore, a shaving aid composition may be substantially anhydrous and solid in or within a wet shaving instrument before or during shaving. [Examples]

[0024] Descriptive sensory evaluations were conducted using shaving devices with the exemplary shaving aid compositions listed in Table 1, with participants trained to detect and quantify sensations related to shaving performance. This type of evaluation can be very useful in identifying and tracking unique variations between samples. Furthermore, the collected data are statistically robust. Various cellulosic cationic polymers, cationic guar polymers, cellulosic anionic polymers, and nonionic polymers were also tested against a control formulation containing only PEO, as shown in more detail in Table 2. However, only cationic cellulose polymers, which do not give significantly different shaving performance compared to the control formulation, are discussed in detail below.

[0025] Referring here to Table 1, the exemplary shaving aid composition comprises a water-soluble polymer. The exemplary shaving aid composition is formulated using polyethylene oxide selected from PEG-115M, PEG-180M, or a combination thereof. Thus, at least a portion of the polyethylene oxide comprises one or more polyethylene oxide polymers having a MW of about 500,000 daltons to about 8,000,000 daltons. Furthermore, the cellulosic cationic polymer comprises a cellulosic backbone having a substituted quaternary ammonium cation. The exemplary shaving aid composition is formulated using polyquaternium-10.

[0026] Exemplary shaving aid compositions are prepared by selecting a water-soluble polymer containing polyethylene oxide, selecting a cellulosic cationic polymer containing a cellulosic backbone with a substituted quaternary ammonium cation, and combining the water-soluble polymer and the cellulosic cationic polymer using known methods. Exemplary shaving aid compositions are substantially anhydrous and solid and are placed in a lubrication box for comparison with similar commercially available products or other controls.

[0027] [Table 1]

[0028] Surprisingly, the exemplary shaving aid compositions achieved unexpectedly good shaving performance using a combination of PEO (in relatively small amounts) and polymer JR-400 compared to a control formulation containing only a relatively large amount of PEO. Briefly, the following results are discussed regarding the exemplary shaving aid composition formulated with PEG-115 (e.g., Example 1). However, it is noteworthy that additional exemplary shaving aid compositions, such as those formulated with PEG-180M present at the same exemplary ratio and mass%, exhibited similar sensory profiles to those discussed below.

[0029] As shown by the mean differences for each characteristic (A1-A13) in Figure 1, the shaving aid composition in a lubricating box (Example 1) with a PEO:JR-400 ratio of approximately 3:1 scored statistically significantly better than the commercially available shaving aid composition (Comparative Example 1) in 12 of the 13 characteristics tested in shaving tests conducted 5 times per week for 2 weeks, as follows: overall preference (A1, 99% LOC); shaving comfort (A2, 99% LOC); ease of achieving a close shave (A3, 99% LOC); safety from cuts and wounds (A4, 95% LOC); lubrication quality JAR (A5, 90% LOC); glide over skin (A6, 99% LOC); did not pull or snag. tug) (A7, 99% LOC); post-shaving smooth skin sensation (A8, 99% LOC); no missed hairs (A9, 99% LOC); no redness or inflammation (A10, 99% LOC); lubrication amount (A12, 95% LOC); overall performance (A13, 99% LOC). Feature A11 is smoother, and there is no significant difference between Example 1 and Comparative Example 1, which supports the idea that Example 1 still exhibited the same exceptional smoothness as Comparative Example 1. Compared to control formulations, the shaving aid composition also unexpectedly achieved better shaving performance using the combination of PEO and polymer JR-400 than other polyquaternium-containing shaving aid compositions. In fact, the shaving aid composition containing polymer JR-400 performed better than the shaving aid composition containing polyquaternium with a higher nitrogen content (e.g., 2.4 to 2.6) and / or a higher viscosity (e.g., 800 Cps to 30,000 Cps), even when the polymers were present over a wide range of concentrations (e.g., 20% to 55.15% by mass).

[0030] Table 2 shows the properties, mass%, and results for shaving aid compositions formulated in the same manner as the exemplary shaving aid compositions shown in Table 1, except that the polyquaternium-10 used was replaced with various other polymers and tested against a control formulation containing only a relatively large amount of PEO.

[0031] [Table 2]

[0032] Table 2 shows that despite relatively high amounts of polyquaternium-10, UCARE® polymers LR-30M (Comparative Example 2) and JR-30M (Comparative Example 3) did not show significant improvement compared to the control formulations containing only relatively high amounts of PEO. For example, Comparative Example 2 scored lower in stringiness (a good property associated with lubrication), trimming (related to shaving depth), mustache pain and oiliness, and tangling / catch compared to the control formulation during a two-day whole-face test. Similarly, Comparative Example 3 scored lower in lubricity properties (oiliness, viscosity) and higher in tangling / catch compared to the control formulation, which showed less inflammation during a two-week segmented facial test.

[0033] Furthermore, 20% by mass of Softcat® 1300 SHX (Dow) (Comparative Example 4) did not show significant improvement in lubricity during weeks 1 and 2 compared to the control formulation in weeks 3 and 4 during a four-week segmented facial test. Similarly, 30% by mass of Softcat® 1300 SHX (Comparative Example 5) exhibited lower lubricity, inferior viscosity, slipperiness, oiliness, and tackiness compared to the control formulation containing only a relatively large amount of PEO during a four-week segmented facial test. In addition, 40% by mass of Softcat® 1300 SHX (Comparative Example 6) was found to be less smooth than the control formulation during a four-week segmented facial test. Ultimately, during a 5-day segmented facial test, 54.15% by mass of Softcat™ 1300 SHX (Comparative Example 7) scored lower in almost all characteristic-related lubricity (viscosity, slipperiness, greasiness) compared to a control formulation containing only a relatively large amount of PEO, resulting in smoother skin, less throat redness, and less throat and jaw pain.

[0034] Therefore, the cellulosic cationic polymer may be selected based on a nitrogen content of preferably more than 1.1%, for example 1.5% to 2.2%, and / or a viscosity of less than 800 Cps, for example 300 Cps to 500 Cps (in a 2% solution). Furthermore, the cellulosic cationic polymer may preferably have a molar mass of less than 1,000 kg / mol, for example 200 kg / mol to 800 kg / mol. In addition, the ratio of water-soluble polymer to cellulosic cationic polymer may preferably be about 1:1 to about 5:1, more preferably about 2:1 to about 4:1. Such ratios can be easily determined based on the amount of PEO used (e.g., an amount between approximately 40% and approximately 80% by mass, including any number and / or fractions) relative to the total mass of the shaving aid composition, and the amount of polymer JR-400 used (e.g., an amount between 20% and less than 50% by mass, including any number and / or fractions) relative to the total mass of the shaving aid composition, where a variation of ±10% is assigned to the concentration.

[0035] Additional notes and examples Additional Example 1 may include a substantially anhydrous and solid shaving aid composition comprising a water-soluble polymer containing polyethylene oxide and a cellulosic cationic polymer containing a cellulosic backbone containing a substituted quaternary ammonium cation. Additional Example 2 may include the shaving aid composition of Additional Example 1, wherein at least a portion of the polyethylene oxide comprises one or more polyethylene oxide polymers having a molecular weight of about 100,000 daltons to about 10,000,000 daltons. Additional Example 3 may include any of the shaving aid compositions from Additional Examples 1 to 2, wherein the water-soluble polymer is present in an amount of about 40% to about 80% by mass relative to the total mass of the shaving aid composition. Additional Example 4 may include any of the shaving aid compositions from Additional Examples 1 to 3, wherein the polyethylene oxide is selected from PEG-115M, PEG-180M, or a combination thereof.

[0036] Additional Example 5 may include any of the shaving aid compositions from Additional Examples 1 to 4, wherein the cellulosic cationic polymer has a nitrogen content of 1.1% or more. Additional Example 6 may include any of the shaving aid compositions from Additional Examples 1 to 5, wherein the cellulosic cationic polymer has a nitrogen content of 1.5% to 2.5%. Additional Example 7 may include any of the shaving aid compositions from Additional Examples 1 to 6, wherein the cellulosic cationic polymer has a viscosity of less than 800 centipoise. Additional Example 8 may include any of the shaving aid compositions from Additional Examples 1 to 7, wherein the cellulosic cationic polymer has a viscosity of 300 cmpoise to 500 cmpoise.

[0037] Additional Example 9 may include any of the additional Examples 1 to 8, wherein the cellulosic cationic polymer is present in an amount greater than 20% by mass and less than 50% by mass relative to the total mass of the shaving aid composition. Additional Example 10 may include any of the additional Examples 1 to 9 of the shaving aid composition, wherein the cationic polymer contains polyquaternium-10. Additional Example 11 may include any of the shaving aid compositions from Additional Examples 1 to 10, wherein the ratio of water-soluble polymer to cellulosic cationic polymer is about 2:1 to about 4:1. Additional Example 12 may include a wet shaving device containing any of the shaving aid compositions from Additional Examples 1 to 11.

[0038] Additional Example 13 may include the wet shaving device of Additional Example 12, wherein the shaving aid composition is placed in shaving aid strips, a lubrication box, or a combination thereof. Additional Example 14 may include a method for manufacturing a wet shaving device from any of Additional Examples 12-13, which includes the step of positioning a shaving aid composition in a shaving aid fragment, a lubrication box, or a combination thereof. Additional Example 15 may include a method for manufacturing the wet shaving device of Additional Example 14, further comprising the step of connecting the wet shaving device with a shaving aid strip, a lubrication box, or a combination thereof. Additional Example 16 may include a method for producing any of the shaving aid compositions from Additional Examples 1 to 11. Additional Example 17 may include a method for producing the shaving aid composition of Additional Example 16, comprising the steps of selecting a water-soluble polymer containing polyethylene oxide, selecting a cellulosic cationic polymer containing a cellulosic backbone containing a substituted quaternary ammonium cation, and combining the water-soluble polymer and the cellulosic cationic polymer to form a shaving aid composition, wherein the shaving aid composition is substantially anhydrous and solid.

[0039] Additional Example 18 may include a method for producing any of the shaving aid compositions from Additional Examples 16-17, in which one or more polyethylene oxide polymers are selected based on a molecular weight of about 100,000 daltons to about 10,000,000 daltons. Additional Example 19 may include a method for producing any of the shaving aid compositions from Additional Examples 16-18, wherein the cellulosic cationic polymer is selected based on a nitrogen content of 1.1% or more. Additional Example 20 may include a method for producing any of the additional Examples 16 to 19 of a shaving aid composition, wherein the cellulosic cationic polymer is selected based on a nitrogen content of 1.5% to 2.5%.

[0040] Additional Example 21 may include a method for producing any of the shaving aid compositions from Additional Examples 16-20, wherein the cellulosic cationic polymer is selected based on a viscosity of less than 800 centipoise. Additional Example 22 may include a method for producing any of the shaving aid compositions from Additional Examples 16 to 21, wherein the cellulosic cationic polymer is selected based on a viscosity of 300 centipoise to 500 centipoise. Additional Example 23 may include a method for producing any of the additional Examples 16 to 22 of a shaving aid composition, comprising the step of combining a water-soluble polymer and a cellulosic cationic polymer to give about 40% to about 80% by mass of the water-soluble polymer and more than 20% by mass but less than 50% by mass of the cellulosic cationic polymer based on the total mass of the shaving aid composition.

[0041] Additional Example 24 may include a method for producing any of the additional Examples 16 to 23 of a shaving aid composition, comprising the step of combining a water-soluble polymer and a cellulosic cationic polymer to give the ratio of the water-soluble polymer to the cationic polymer in the shaving aid composition to be about 2:1 to about 4:1. Additional Example 25 may include a method for producing any of the additional Examples 16-24 of a shaving aid composition, wherein the polyethylene oxide is selected from PEG-115M, PEG-180M, or a combination thereof. Additional Example 26 may include a method for producing any of the shaving aid compositions from Additional Examples 16 to 25, wherein the cationic polymer contains polyquaternium-10. Additional Example 27 may include a method of using any of the additional Examples 1 to 11 of the shaving aid composition, which includes the step of contacting the shaving aid composition with a solvent to activate a water-soluble polymer and depositing at least a cellulosic cationic polymer from a wet shaving instrument onto a hairy substrate or a keratinous substrate during shaving. Additional Example 28 may include a method of using the shaving aid composition of Additional Example 27, comprising the steps of bringing a wet shaving instrument into contact with a solvent, bringing a wet shaving instrument into contact with a wet, hairy substrate, bringing a wet shaving instrument into contact with a wet, keratinous substrate, or a combination thereof.

[0042] Although this disclosure has been described in particular in conjunction with certain preferred embodiments, it is obvious that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, the appended claims are intended to encompass any such alternatives, modifications, and variations that fall within the true scope and spirit of this disclosure.

Claims

1. A water-soluble polymer containing polyethylene oxide, A cellulosic cationic polymer containing a cellulosic skeleton with a substituted quaternary ammonium cation, A shaving aid composition comprising, substantially anhydrous and solid.

2. The shaving aid composition according to claim 1, wherein at least a portion of the polyethylene oxide comprises one or more polyethylene oxide polymers having a molecular weight of about 100,000 daltons to about 10,000,000 daltons.

3. The shaving aid composition according to claim 1, wherein the water-soluble polymer is present in an amount of about 40% to about 80% by mass relative to the total mass of the shaving aid composition.

4. The shaving aid composition according to claim 1, wherein the polyethylene oxide is selected from polyethylene glycol (PEG)-115M, PEG-180M, or a combination thereof.

5. The shaving aid composition according to claim 1, wherein the cellulosic cationic polymer has a nitrogen content of 1.1% or more.

6. The shaving aid composition according to claim 5, wherein the cellulosic cationic polymer has a nitrogen content of 1.5% to 2.5%.

7. The shaving aid composition according to claim 1, wherein the cellulosic cationic polymer has a viscosity of less than 800 centipoise.

8. The shaving aid composition according to claim 7, wherein the cellulosic cationic polymer has a viscosity of 300 cmpoise to 500 cmpoise.

9. The shaving aid composition according to claim 1, wherein the cellulosic cationic polymer is present in an amount exceeding 20% ​​by mass and less than 50% by mass with respect to the total mass of the shaving aid composition.

10. The shaving aid composition according to claim 1, wherein the cationic polymer comprises polyquaternium-10.

11. The shaving aid composition according to claim 1, wherein the ratio of the water-soluble polymer to the cellulosic cationic polymer is about 2:1 to about 4:

1.

12. A wet shaving device comprising the shaving aid composition described in claim 1.

13. The wet shaving device according to claim 12, wherein the shaving aid composition is placed in a shaving aid strip, a lubrication box, or a combination thereof.

14. A method for producing a shaving aid composition, A step of selecting a water-soluble polymer containing polyethylene oxide, A step of selecting a cellulosic cationic polymer containing a cellulosic skeleton containing a substituted quaternary ammonium cation, The steps include: forming a shaving aid composition by combining the water-soluble polymer and the cellulosic cationic polymer; A method comprising the shaving aid composition being substantially anhydrous and solid.

15. The method according to claim 14, wherein one or more polyethylene oxide polymers are selected based on a molecular weight of about 100,000 daltons to about 10,000,000 daltons.

16. The method according to claim 14, wherein the cellulosic cationic polymer is selected based on a nitrogen content of 1.1% or more.

17. The method according to claim 16, wherein the cellulosic cationic polymer is selected based on a nitrogen content of 1.5% to 2.5%.

18. The method according to claim 18, wherein the cellulosic cationic polymer is selected based on a viscosity of 300 cmpoise to 500 cmpoise.

19. The method according to claim 14, comprising the step of combining the water-soluble polymer and the cellulosic cationic polymer to provide the water-soluble polymer in an amount of about 40% to about 80% by mass and the cellulosic cationic polymer in an amount exceeding 20% ​​by mass but less than 50% by mass, based on the total mass of the shaving aid composition.

20. The method according to claim 14, comprising the step of combining the water-soluble polymer and the cellulosic cationic polymer to give the shaving aid composition a ratio of the water-soluble polymer to the cationic polymer of about 2:1 to about 4:1.

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