Solid soap ingredients with enhanced skin benefits

Abstract

A solid soap composition is disclosed comprising: 20-80% by weight of total fat; 0.1-5% by weight of electrolytes; 0.001-5% by weight of a PPAR activator selected from 10-hydroxystearic acid or 12-hydroxystearic acid; 1-45% by weight of starch-containing complex carbohydrates; and 10-50% by weight of water.

Description

[Technical Field]

[0001] This invention relates to cosmetic compositions designed to improve the appearance and health of the skin. The invention also relates to soap compositions that provide the skin with even tone, radiance, clarity, and a barrier effect. More specifically, the invention relates to such compositions comprising a complex carbohydrate containing starch and a PPAR activator. [Background technology]

[0002] The skin is subject to deterioration due to skin damage, environmental abuse (wind, air conditioning, central heating, pollution), or the normal aging process (aging) which can be accelerated by exposure to sunlight (photoaging). In recent years, the demand for cosmetic compositions and cosmetic methods to improve the appearance and condition of the skin has increased dramatically.

[0003] Many people care about the quality and appearance of their skin and want to work on improving it. Dermatologists also emphasize that cleansing products should support the skin and help improve its quality. Cleansing products should essentially care for the skin and restore its quality.

[0004] Peroxisome proliferator-activated receptors (hereinafter abbreviated as PPAR in this specification) are transcription factors that regulate lipid metabolism. There are three isotypes: PPARα, PPARβ / δ, and PPARγ, all of which, according to Riviers et al. (Riviers et al, J. Invest. Dermatol. 111, 1116-1121 (1998)), are localized in the skin. Certain fatty acids within a certain range activate these factors, resulting in anti-inflammatory effects that reduce skin irritation responses, while also inducing pro-differentiation / anti-proliferative responses to normalize skin metabolism and provide further skincare benefits. Pershadsingh states in US-A-5981586 that PPAR ligands can reduce skin proliferation and inflammation. Elias et al. disclose in PCT application WO-A-98 / 32444 that PPAR ligands can restore / prevent skin barrier dysfunction. In EP-A-888773, Malnoe et al. describe the use of PPAR-activated lipid petroseric acid in the treatment and prevention of inflammation of superficial tissues. Furthermore, in PCT application WO-A-99 / 47110, Alaluf et al. describe the use of petroseric acid or its glycerides to reduce skin irritation in skin treatments aimed at simultaneously preventing aging and wrinkles and imparting whitening properties. In EP-A-709084, Laugier et al. describe the use of coriander oil rich in petroseric acid in a cosmetic composition for moisturizing dry skin. In US-A-5260053, Chappell et al. describe a deodorant formulation containing coriander oil in particular, which reduces odor by reducing the populations of both Micrococcus and diphtheroids and masks residual androsterone compounds.

[0005] WO2018113636 (Unilever) discloses that a combination of a modified GSH block amino acid mixture containing cystine, glutamic acid, and glycine, and PPAR-activated fatty acids, synergistically enhances skin whitening and counteracts the drawback of low solubility of cystine.

[0006] WO2001008653 (Unilever) discloses topical compositions comprising (a) a first lipid selected from petroseric acid and / or docosahexaenoic acid and / or derivatives thereof; (b) a second lipid and / or derivatives thereof and / or mixtures thereof that are activators of peroxisome proliferator-activated receptor subtype α; and (c) dermatologically acceptable excipients. However, the first and second lipids are not the same lipid. These compositions are useful as cosmetic anti-aging skincare creams and lotions.

[0007] WO12110276 (Unilever) discloses a leave-on non-solid oil continuous skin conditioning composition containing 12-hydroxystearic acid. This composition is suitable for application to the skin due to its relatively low viscosity despite containing 12-HSA, and it is also stable and reversible in structure with temperature cycling.

[0008] CN106675895A relates to the technical field of daily necessities chemical products, and more particularly to a hypoallergenic cosmetic soap and a method for manufacturing the same. This cosmetic soap contains the following mass % raw materials: olive oil 8%~12%, oleic acid 5%~8%, linoleic acid 4%~6%, sodium hydroxide 1.5%~2.5%, potassium carbonate 2%~4%, lecithin 10%~15%, sorbitan fatty acid ester 4%~6%, abietic acid 2%~3%, propolis 3%~5%, sodium bicarbonate 0.2%~0.4%, starch 2%~4%, sodium acetate 0.2%~0.4%, essence 0.3%~0.5%, and water 40%~50%. The cosmetic soap disclosed in this invention has a pH value of approximately 7.2 to 7.6, avoiding skin irritation caused by the strong alkalinity of conventional cosmetic soaps. Furthermore, the added propolis and starch are not only effective in sterilizing and nourishing the skin, but also facilitate the formation of the cosmetic soap. [Prior art documents] [Patent Documents]

[0009] [Patent Document 1] US-A-5981586 [Patent Document 2] WO-A-98 / 32444 [Patent Document 3] EP-A-888773 [Patent Document 4] To WO-A-99 / 47110 [Patent Document 5] EP-A-709084 [Patent Document 6] US-A-5260053 [Patent Document 7] WO2018113636 [Patent Document 8] WO2001008653 [Patent Document 9] WO12110276 [Patent Document 10] CN106675895A [Non-patent literature]

[0010] [Non-Patent Document 1] Riviers et al, J. Invest. Dermatol. 111, 1116-1121(1998) [Overview of the Initiative] [Problems that the invention aims to solve]

[0011] Hydroxystearic acid has recently become known in the cosmetics industry. On the other hand, complex carbohydrates such as starch have been used as part of the structuring system in solid soaps, but no specific effects have been reported, and they are mainly used as bulking agents.

[0012] Most people consider skin health and appearance to be one of the most important indicators of their own beauty and health. It is influenced by factors such as age, hormonal changes, acne breakouts, and exposure to sunlight and air pollution.

[0013] Therefore, there is always a need for compositions that improve the appearance of the skin, and it is a strong consumer desire to include skin-beneficial agents in consumables that are already part of the daily cleansing routine and do not require additional procedures for skin care.

[0014] Therefore, there is a current need for a soap composition that meets the eternal desire to improve the skin, is affordable, and improves the skin by continuous use.

Means for Solving the Problems

[0015] A first aspect of the present invention provides i. 20 to 80% by weight of total fatty matter; ii. 0.1 to 5% by weight of electrolyte; iii. 0.001% to 5% by weight of a PPAR activator; iv. 1 to 45% by weight of starch-containing complex carbohydrates; and v. 10 to 50% by weight of water A soap composition containing the above ingredients.

[0016] A second aspect of the present invention provides i. Saponifying the fatty matter with an alkali to produce a saponified product; ii. Adding 1 to 45% by weight of starch-containing complex carbohydrates or starch-containing modified complex carbohydrates and water based on the weight of the solid soap composition to obtain a soap mass; and iii. Extruding the soap mass obtained in step (b) to obtain a solid soap according to the first aspect A method for producing the soap composition according to the first aspect, including A method of adding 0.01 to 5% by weight of a PPAR activator based on the weight of the solid soap composition in step (i) or (ii).

[0017] A third aspect of the present invention provides the use of a PPAR activator and a starch-containing complex carbohydrate in the soap composition according to the first aspect for imparting luster to the skin as compared to a solid soap composition not containing a PPAR activator and a starch-containing complex carbohydrate.

[0018] A fourth aspect of the present invention provides the use of a PPAR activator and a starch-containing complex sugar in a soap composition according to the first aspect for uniformizing skin tone, compared to a solid soap composition that does not contain a PPAR activator and a starch-containing complex sugar.

[0019] A fifth aspect of the present invention provides the use of a PPAR activator and a starch-containing complex sugar in a soap composition according to the first aspect for giving skin transparency compared to a solid soap composition that does not contain a PPAR activator and a starch-containing complex sugar.

[0020] A sixth aspect of the present invention provides the use of a PPAR activator and a starch-containing complex sugar in a soap composition according to the first aspect for lightening skin blemishes compared to a solid soap composition that does not contain a PPAR activator and a starch-containing complex sugar.

[0021] As used herein, the term “comprising” encompasses the terms “consisting essentially of” and “consisting of.” When the term “comprising” is used, the listed stages or options do not necessarily have to be exhaustive. Unless otherwise specified, numerical ranges expressed in the form “from x to y” are understood to include x and y. When specifying a range of values ​​or quantities, a particular upper limit or upper limit may be associated with a particular lower limit or lower limit. Except for examples and comparative experiments, or unless explicitly indicated otherwise, all numerical values ​​should be understood to be modified by the word “about.” All percentages and ratios included herein are calculated on a weight basis unless otherwise specified. As used herein, the indefinite article “a)” or “an,” and its corresponding definite article “the,” mean at least one or more unless otherwise specified. The various features of the invention referred to in the individual sections above shall apply mutatis mutandis to other sections as appropriate. Consequently, features identified in one section can be combined with features identified in other sections as appropriate. Section headings are added for convenience only and do not limit the disclosure in any way. The present invention is not limited to the embodiments shown in the drawings. Therefore, it should be understood that if a reference number follows a feature described in a claim, such numbering is provided solely to facilitate understanding of the claim and does not limit the scope of the claim.

[0022] Throughout this specification, unless otherwise stated, weight percent means weight percent of the total weight of the soap composition of the present invention.

[0023] The various components of the composition will be described in more detail below. [Modes for carrying out the invention]

[0024] These and other aspects, features and advantages will become apparent to those skilled in the art by reading the following detailed description and the attached claims. To avoid doubt, any feature of one aspect of the present invention may be utilized in any other aspect of the present invention. The expression “comprising” is intended to mean “including,” but not necessarily “consisting” or “composed of.” In other words, the steps or options described do not need to be comprehensive. It should be noted that the examples described below are intended to clarify the present invention and not to limit the present invention to those examples themselves. Similarly, all percentages are by weight / weight percent unless otherwise indicated. Except as in the examples and comparative examples, or unless expressly indicated, all figures expressed in this “Detailed Description” and “Claims” regarding the quantity of material or reaction conditions, physical properties of material and / or use should be understood as being modified by the word “about.” Numerical ranges expressed in the form “from x to y” are understood to include x and y. When multiple preferred ranges for a particular feature are described in the form "from x to y," it is understood that all ranges combining different endpoints will also be considered.

[0025] Throughout this specification, unless otherwise stated, weight percent means weight percent of the total weight of the soap composition of the present invention.

[0026] The various components of the composition will be described in more detail below.

[0027] The present invention provides a solid soap composition comprising 20-80% by weight of total fat, 0.1-5% by weight of electrolytes, 0.001-5% by weight of PPAR activator, 1-45% by weight of starch-containing complex carbohydrates, and 10-50% by weight of water.

[0028] PPAR activators have long been known in the cosmetics industry. On the other hand, starch-containing complex carbohydrates have been used in solid soaps as part of a structuring system, but no specific effects have been reported, and they are mainly used as fillers.

[0029] The inventors have surprisingly discovered a composition that, when used in a predetermined weight percentage range of ingredients, provides beneficial properties to the skin. The efficacy of these ingredients combined (measured by relevant methods) is higher than that of either ingredient alone, and in fact, such effects are not known for starch-containing complex carbohydrates. The results of the composition of the present invention showed synergistic beneficial results when the combination of a PPAR activator and a starch-containing complex carbohydrate was evaluated for its effects on the skin, such as radiance, skin clarity, and skin tone. Furthermore, the composition of the present invention was found to be mild, gentle, smooth, and soft, as perceived by many consumers during testing. This is a beneficial aspect of the present invention, where soap, which is part of everyone's basic daily hygiene routine, can perform functions that improve skin tone, skin clarity, blemish fading, and skin radiance. The inventors have made the very surprising discovery that this composition, which everyone uses daily, can target and solve these skin problems without the need for specific ingredients such as serums or creams. Therefore, the inventors were able to create a formulation that can target multiple skin problems at once without requiring any special effort.

[0030] soap The present invention relates to a soap composition. A soap composition means a cleansing composition comprising molded solid soap. The composition is preferably molded into a noodle-like or rod-like shape. More preferably, the composition of the present invention is rod-shaped. The rod shape can have a variety of shapes, including rectangular, square, or elliptical cross-sections. The composition of the present invention is, for example, a rod-shaped molded solid. A cleansing soap composition is generally a wash-off product containing a sufficient amount of surfactant to cleanse a desired localized surface, such as the whole body, hair and scalp, or face. It is applied to the localized surface, left for a few seconds or minutes, and then rinsed off with plenty of water.

[0031] The present invention provides a soap composition comprising 20-80% by weight of total fat, 0.1-5% by weight of electrolytes, 0.001-5% by weight of PPAR activator, 1-45% by weight of starch-containing complex carbohydrates, and 10-50% by weight of water.

[0032] The soap composition of the present invention is particularly useful for personal cleansing. The soap composition is preferably in the form of soap noodles or solid soap. The soap composition of the present invention contains 18 to 80% by weight, preferably 20 to 75% by weight, and more preferably 20 to 65% by weight of soap-derived TFM. The term "soap" means a salt of a fatty acid. Preferably, the soap is a soap of C8 to C24 fatty acids.

[0033] The cation is an alkali metal, alkaline earth metal, or ammonium ion, preferably an alkali metal. Preferably, the cation is selected from sodium or potassium, more preferably sodium. The soap can be saturated or unsaturated. In terms of stability, saturated soap is preferred over unsaturated soap. The oil or fatty acid may be of plant or animal origin.

[0034] Soap compositions can be obtained by saponification of oils, fats, or fatty acids. Fats or oils commonly used in soap production can be selected from animal fat, stearin, palm oil, palm stearin, soybean oil, fish oil, castor oil, rice bran oil, sunflower oil, coconut oil, babassu oil, and palm kernel oil. Fatty acids may be derived from coconut, rice bran, peanuts, animal fat, palm, palm kernel, cottonseed, or soybeans.

[0035] Fatty acid soaps can also be prepared synthetically (for example, by oxidation of petroleum or by hydrogenation of carbon monoxide using the Fischer-Tropsch process). Resin acids, such as those present in tall oil, can also be used. Naphthenic acid can also be used.

[0036] The soap composition may further contain one or more synthetic surfactants selected from one or more types of anionic surfactants, nonionic surfactants, cationic surfactants, or amphoteric surfactants, preferably anionic surfactants. In the present invention, these synthetic surfactants are present in the composition in an amount of less than 8%, preferably less than 4%, more preferably less than 1.5%, and may not be present in some cases.

[0037] The chain length of soap is determined by the fatty or oily raw material, which is usually a mixture. In this specification, "oil" and "fat" are used interchangeably unless otherwise specified in the context. Long-chain fatty acid soaps (e.g., C 16 Palmitic acid or C 18 Stearic acid is typically obtained from animal fats or palm oils and is a short-chain soap (e.g., C 12 Lauric acid is typically obtained from sources such as coconut oil and palm kernel oil. The resulting fatty acid soap can be saturated or unsaturated fatty acids (e.g., oleic acid).

[0038] Typical examples include long-chain fatty acid soaps (e.g., C 14 ~C 22Soaps, especially long-chain saturated soaps, are insoluble and do not produce sufficient lather when used, but they can make the lather creamier and more stable. Conversely, short-chain soaps (e.g., C8~C) 12 Short-chain soaps and unsaturated soaps (e.g., oleic acid soap or linoleic acid soap) lather quickly. However, it is desirable that long-chain soaps (typically saturated, but may also contain some unsaturated fatty acids such as oleic acid) maintain their structure and do not dissolve immediately. Unsaturated soaps (e.g., oleic acid) dissolve easily and lather quickly like short-chain soaps, but form a denser, creamier lather like long-chain soaps.

[0039] Iodine value is an indicator of the degree of unsaturation, and there are well-known methods for measuring it. One method is gas chromatography. In this method, methyl esters of fatty acids are formed and analyzed using chromatographic techniques. Furthermore, there are also wet chemical analysis methods. It is possible to measure the iodine value of oil and fat mixtures before saponification. In addition, it is possible to measure the iodine value of soap (saponified oil or fatty acid) present in finished products such as bar soap and noodle soap.

[0040] The soap composition preferably has a pH in the range of 8 to 13 when measured at 25°C in an 8% solution of distilled water.

[0041] PPAR activator Peroxisome proliferator-activated receptors (hereinafter abbreviated as PPAR) are transcription factors that regulate lipid metabolism. Three isotypes exist: PPARα, PPARβ / δ, and PPARγ, all of which have been reported to localize in the skin.

[0042] Most preferably, the PPAR activator is a PPAR fatty acid such as cis-parinaric acid, cis-9-trans-11 conjugated linoleic acid, columbinic acid, docosahexaenoic acid, eicosapentaenoic acid, hexadecatrienoic acid, linolenic acid (an isomer of linolenic acid), petroseric acid, pinolenic acid, punicic acid, ricinoleic acid, ricinollysic acid (an isomer of ricinoleic acid), stearidonic acid, trans-10-cis-12 conjugated linoleic acid, 7-trans-octadecanoic acid, or vaccenic acid.

[0043] Potential sources of hydrolyzable PPAR precursors include triglycerides such as coriander seed oil for petroceric acid, Impatiens balsamina seed oil, parinarium larinarium kernel fat, or Sabastiana brasilinensis seed oil for cis-parinaric acid, dried castor oil for conjugated linoleic acid, and columbine oil for columbinic acid.

[0044] Preferably, the PPAR acid contains 16 or 18 carbon atoms. The most preferred PPAR acid is olefinic unsaturated, and particularly preferably mono, di, or tri-unsaturated. Many of the most preferred PPAR activating acids are not only unsaturated but also C16 or C18 acids. An alternative PPAR acid (xvii) is 12-hydroxystearic acid (sometimes abbreviated as 12-HSA), which is effective for the present invention at concentrations lower than those required to form a gelling formulation.

[0045] The proportion of fatty acid PPAR ligand in the present invention is greater than or equal to the minimum proportion that shows reduced irritation and / or improvement of skin condition compared to the same composition without the PPAR ligand. As might be expected, such a minimum proportion will vary not only from compound to compound but also depending on whether the acid is used in its free form or introduced via a precursor. This minimum proportion can be determined by the patch test method described herein.

[0046] Peroxisome proliferator-activated receptors (PPARs) are a known family of nuclear hormone receptors with three subtypes, α, β, and γ, which have different tissue distributions. Peroxisome proliferator-activated receptor subtype α (hereinafter abbreviated as PPARα) is present in the skin. The preferred PPAR activator for the composition of the present invention is a lipid activator of subtype α peroxisome proliferator-activated receptor.

[0047] In this application, the terms "activator of subtype α peroxisome proliferator-activated receptor" or "PPARα activator" refer to lipids that activate the nuclear receptor PPARα.

[0048] Examples of lipid PPARα activators that satisfy the reporter gene assay test (Kliewer et al. (1992) Nature, 358, 771-774) include C10-C18 saturated fatty acids (preferably branched, or preferably derivatized (e.g., with a hydroxyl group) if linear), C10-C20 monounsaturated fatty acids, and C10-C22 polyunsaturated fatty acids.

[0049] Fatty acids can be linear or branched, saturated or unsaturated, and may be substituted, for example, with hydroxylation such as α-hydroxy or β-hydroxy derivatives. Alcohols, triglycerides, and phospholipids corresponding to any of these acids are also suitable for use in the present invention. Preferred derivatives include those derived by substitution of the carboxyl group of the acid, such as esters (e.g., triglyceride esters, monoglyceride esters, diglyceride esters, phosphate esters), amides (e.g., ceramide derivatives), and salts (e.g., alkali metal salts and alkaline earth metal salts, ammonium salts). In the case of triglyceride ester derivatives, all positional isomers on the glycerol skeleton are included.

[0050] Therefore, oils rich in fatty acid triglycerides are also suitable as indicators in this invention. Such oils are commercially available and include coriander seed oil (rich in petroceric acid), parsley seed oil (rich in petroceric acid), evening primrose oil (rich in gamma-linolenic acid), borage seed oil (rich in gamma-linolenic acid), shea butter (rich in oleic acid and linoleic acid), fish oil and its concentrate (rich in DHA and EPA), cranberry oil (rich in erucic acid), flaxseed oil (rich in alpha-linolenic acid), almond oil (rich in oleic acid), and cottonseed oil (rich in linoleic acid).

[0051] Preferred PPARα activators according to the present invention include 10-hydroxystearic acid, 12-hydroxystearic acid, cisparinaric acid, trans-7-octadecenoic acid, cis-5,8,11,14,17-eicosapentaenoic acid, cis-4,7,10,13,16,19-docosahexenoic acid, conjugated linoleic acid (c9,t11), columbinic acid, linolenelysic acid, ricinolysic acid, and stearidone. These include acids, 2-hydroxystearic acid, α-linolenic acid, arachidonic acid, cis-11,14-eicosadienoic acid, conjugated linoleic acid (T10,C12), conjugated linoleic acid (T9,T11), conjugated linoleic acid (C9,T11 and T10C12), corianderic acid, linoleric acid, monopetroceric acid, petroceric acid, ricinoleic acid, stearolic acid, tuja extract, and transvaccenic acid.

[0052] Further suitable and preferred PPARα activators include cis-11,14,17 eicosatrienoic acid, cis-5 eicosatrienoic acid, cis-8,11,14 eicosatrienoic acid, hexadecatrienoic acid, palmitoleic acid, petroseridic acid, trans-transfarnesol, cis-13,16 docosadienoic acid, cis-vaccenoic acid, cis-11 eicosatrienoic acid, cis-13,16,19 docosatrienoic acid, cis-13-octadecenoic acid, cis-15-octadecanoic acid, cis-7,10,13,16 docosatetraenoic acid, elaidic acid, γ-linolenic acid, geranic acid, geranylgeranic acid, linoleic acid, oleic acid, petroserinyl alcohol, phytanic acid, pinolenic acid, trans-13-octadecenoic acid, and tridecylsalicylic acid (TDS).

[0053] Further preferred categories of PPARα activators include plant extracts such as biochanin A (red clover plant estrogen), chromolaena odorata extract, pomegranate hydrolyzed extract, buglosoides (stearidone plant extract), and zantaren (Sichuan pepper extract).

[0054] Particularly preferred lipids are selected from the group including linoleic acid, conjugated linoleic acid, linolenic acid, eicosatetraenoic acid, arachidonic acid, eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA) (for DHA, only when the first lipid in the composition of the present invention is PA or a derivative thereof), monounsaturated fatty acids such as petroseric acid (for PA, only when the first lipid in the composition of the present invention is DHA or a derivative thereof), elaidic acid, oleic acid, erucic acid, and diacids such as hexadecanedioic acid, as they exhibit excellent anti-aging effects when combined with petroseric acid and / or DHA (or its derivatives) according to the present invention.

[0055] It is important to understand that the PPARα activator present in the composition according to the present invention ideally exists in an "active" form, that is, an unesterified form. Therefore, although the above refers to naturally derived material sources such as oils, the PPARα activator used in the composition according to the present invention is preferably not a raw esterified activator, but rather a raw material source that is rich in unesterified PPARα activators, or a raw material source from which the esterified form has been hydrolyzed to release fatty acids.

[0056] The present invention comprises a PPAR activator, more preferably a PPARα activator. It is preferable that the PPAR activator is present in the composition of the present invention in an amount of 0.001% to 5% by weight, more preferably 0.008% to 4.5% by weight, and most preferably 0.01% to 4% by weight, based on the weight of the soap composition.

[0057] Hydroxystearic acid The most preferred PPAR activator in the present invention is hydroxystearic acid or a derivative thereof. Preferably, the soap composition of the present invention contains hydroxystearic acid or a derivative thereof. Hydroxystearic acid is a C18 chain fatty acid having one or more OH groups along the hydrocarbon chain. Typically, 12-HAS and 10-HAS are well known hydroxystearic acids. It is often used as an emollient in skincare products and is also a common soap ingredient due to its surfactant properties.

[0058] The present invention comprises hydroxystearic acid, more preferably 12-hydroxystearic acid and 10-hydroxystearic acid, and most preferably 12-hydroxystearic acid. Hydroxystearic acid is preferably present in the soap composition of the present invention in an amount of 0.001% to 5% by weight, more preferably 0.008% to 4.5% by weight, and most preferably 0.01% to 4% by weight, based on the weight of the soap composition.

[0059] Complex carbohydrates The soap composition of the present invention contains glycoconjugates. Carbohydrates include two types: monosaccharides and glycoconjugates. Monosaccharides are composed of one or two sugar molecules. Glycoconjugates include starch and fiber. Glycoconjugates are polysaccharides, and it is most preferable to contain starch. On the other hand, polysaccharides have the general formula Cx(H2O) y and x and y are usually large numbers in the range of 200 to 2500. As is often the case, when the repeating unit in the polymer backbone is a hexose monosaccharide, this general formula is (C6H 10 O5) n and is simplified to, and typically 40 ≦ n ≦ 3000.

[0060] The carbohydrate containing starch in the soap composition is preferably in the range of 1 to 45% by weight of the weight of the soap composition, more preferably 3 to 40% by weight, and most preferably 5 to 35% by weight.

[0061] Starch (a polymer of glucose) is a polysaccharide preferably used as a storage polysaccharide in plants and exists in both the forms of amylose and branched amylopectin. In animals, a structurally similar glucose polymer is more densely branched glycogen, which may also be called "animal starch".

[0062] Starch is preferably at least 20% by weight based on the weight of the glycoconjugate, preferably at least 30%, 40%, 50%, 60%, 70%, more preferably at least 80%, even more preferably at least 85%, and most preferably at least 90%. In a highly preferred embodiment, starch is at least 95% by weight based on the weight of the glycoconjugate.

[0063] In another aspect of the present invention, the glycoconjugate is starch or modified starch.

[0064] Suitable starch materials include natural starches (such as corn, wheat, rice, potatoes, and tapioca), pregelatinized starches, various physically and chemically processed starches, and mixtures thereof. The term "natural starch" refers to starch that has not been chemically or physically processed, also known as raw starch or native starch.

[0065] Preferred starches are natural or native starches from corn, cassava, wheat, potatoes, rice, and other natural sources. Raw starches with different amylose-to-amylopectin ratios include, for example, corn (25% amylose), waxy corn (0%), high-amylose corn (70%), potatoes (23%), rice (16%), sago (27%), cassava (18%), wheat (30%), and peas (35% amylose). Raw starches can be used directly or modified so that the starch is gelatinized during the manufacturing process of the liquid personal cleansing composition. Starches are preferably unmodified, partially gelatinized, non-gelatinized, or gelatinized. It is most preferable to use non-gelatinized or gelatinized starch. It is even more preferable to use native, unmodified starch.

[0066] Another suitable starch is gelatinized, which is starch that has been gelatinized before being added as an ingredient to the liquid personal cleansing composition of the present invention. Various forms that gel at different temperatures are available, such as cold water dispersible starch.

[0067] The starch particle size is preferably in the range of 2 to 70 μm, more preferably 4 to 50 μm, and most preferably 5 to 40 μm, but the particle shape can be a smooth ellipse, a flattened ellipsoid, or a polygon, with a smooth ellipse / ellipsoid being preferred. Most preferably, native starch with a particle size in the range of 2 to 70 μm, more preferably 4 to 50 μm, and most preferably 5 to 40 μm is used.

[0068] electrolyte The presence of small amounts of electrolytes (other than soap) can affect the ratio of liquid to solid phases. Increasing the electrolyte content reduces the solubility of soap, thereby increasing the amount of solid phase, while decreasing the electrolyte level makes the soap softer.

[0069] The electrolytes in this invention include compounds that substantially dissociate into ions in water. The electrolytes in this invention are not ionic surfactants. Suitable electrolytes for addition to the soap manufacturing process are alkali metal salts. Preferred alkali metal salts include sodium sulfate, sodium chloride, sodium acetate, sodium citrate, potassium chloride, potassium sulfate, sodium carbonate, and mono, di, or tri salts of other alkaline earth metals; more preferred electrolytes are sodium chloride, sodium sulfate, sodium citrate, and potassium chloride; and particularly preferred electrolytes are sodium chloride, sodium sulfate, sodium citrate, or combinations thereof. To avoid any doubt, it should be made clear that the electrolytes are non-soap materials. The electrolytes are preferably added to the soap composition during the saponification stage for soap formation.

[0070] The composition of the present invention preferably contains 0.1 to 5% by weight, more preferably 0.5 to 3% by weight, and most preferably 0.7 to 2.5% by weight of an electrolyte. Preferred electrolytes include sodium sulfate, sodium chloride, sodium citrate, potassium chloride, potassium sulfate, sodium carbonate, and mono, di, or tri salts of other alkaline earth metals. More preferred electrolytes are sodium chloride, sodium sulfate, and potassium chloride, and particularly preferred electrolytes are sodium chloride, sodium sulfate, and combinations thereof. To avoid any ambiguity, it should be clarified that the electrolyte is a non-soap material.

[0071] It is most preferable to use sodium sulfate and / or sodium chloride and / or sodium citrate, or a combination thereof, as the electrolyte in the composition of the present invention.

[0072] If sodium sulfate is present, it is preferably present in an amount of 0.1 to 5% by weight, more preferably 0.5 to 3% by weight, and most preferably 0.7 to 2.5% by weight, relative to the weight of the composition. The amount of sodium sulfate is preferably at least 0.1% by weight, more preferably at least 0.5% by weight, most preferably at least 0.7% by weight, 5% or less by weight, more preferably 3% or less by weight, even more preferably 2.8% or less by weight, and most preferably 2.5% or less by weight, relative to the total weight of the composition of the present invention.

[0073] If sodium chloride is present, it is preferably in the range of 0.5 to 1.5% by weight, more preferably 0.7 to 1.3% by weight, and most preferably 1.0 to 1.3% by weight, based on the weight of the composition. Sodium chloride is preferably at least 0.1% by weight, more preferably at least 0.5% by weight, most preferably at least 0.7% by weight, 5% or less by weight, more preferably 3% or less by weight, even more preferably 2.8% or less by weight, and most preferably 2.5% or less by weight, based on the total weight of the composition of the present invention.

[0074] If sodium citrate is present, it is preferably in the range of 0.5 to 1.5% by weight, more preferably 0.7 to 1.3% by weight, and most preferably 1.0 to 1.3% by weight, based on the weight of the composition. The sodium citrate is preferably at least 0.1% by weight of the total weight of the composition of the present invention, more preferably at least 0.5% by weight, most preferably at least 0.7% by weight, preferably 5% by weight or less, more preferably 3% by weight or less, even more preferably 2.8% by weight or less, and most preferably 2.5% by weight or less.

[0075] moisture content The soap composition of the present invention has a water content of 50% by weight or less of the weight of the solid soap. The soap composition of the present invention contains 10 to 50% by weight, preferably 12 to 45% by weight, and most preferably 15 to 40% by weight of water, based on the weight of the soap composition.

[0076] Organic and inorganic additive materials The total level of auxiliary substances used in the solid soap composition should be 50% by weight or less, preferably 1 to 50% by weight, and more preferably 3 to 45% by weight of the solid soap composition.

[0077] The auxiliary agent system may optionally include insoluble particles comprising one type of material or a combination of materials. Preferably, these are minerals (e.g., inorganic substances) or organic particles.

[0078] Insoluble particles should not be perceived as rough or granular, and therefore should have a particle size of less than 300 microns, more preferably less than 100 microns, and most preferably less than 50 microns.

[0079] Preferred inorganic particulate materials include talc and calcium carbonate. Talc is a mineral material of magnesium silicate, and has a sheet-like silicate structure and Mg3Si4(OH) 22 It has the following composition and is available in hydrate form. Talc is in plate-like form and is essentially lipophilic / hydrophobic, meaning it is more easily wetted by oil than by water.

[0080] Calcium carbonate, or chalk, exists in three crystalline forms: calcite, aragonite, and vaterite. Natural forms of calcite are rhombohedral or cubic, aragonite is acicular or dendritic, and vaterite is spherical.

[0081] Other examples of arbitrary insoluble inorganic particulate materials include aluminates, phosphates, insoluble sulfates, borates, and clays (e.g., kaolin, pottery clay) and combinations thereof.

[0082] Organic particulate materials include insoluble polysaccharides such as cellulose; synthetic polymers such as various polymer lattices and suspension polymers; and insoluble soaps and mixtures thereof.

[0083] The solid soap composition preferably contains 0.1 to 25% by weight, preferably 5 to 15% by weight, of these mineral particles or organic particles.

[0084] Personal care compositions may optionally contain an opaque agent. When an opaque agent is present, the cleansing bar soap is generally opaque. Examples of opaque agents include titanium dioxide and zinc oxide. Particularly preferred opaque agents when an opaque soap composition is desired are ethylene glycol monostearate or distearate, for example, in the form of a 20% solution of sodium lauryl ether sulfate. An alternative opaque agent is zinc stearate.

[0085] The product may take the form of a translucent or transparent soap, in which case it will not contain an opaque agent.

[0086] The soap composition of the present invention preferably has a pH in the range of 9 to 13 when measured at 25°C as a 4% solution in distilled water.

[0087] A preferred solid soap may further contain up to 30% by weight of beneficial agents. Preferred beneficial agents include humectants, emollients, sunscreens, whitening agents, and anti-aging compounds. These agents can be added at appropriate stages during the manufacturing process of the solid soap. Some beneficial agents may be introduced as macrodomains.

[0088] In the process of the present invention, other optional ingredients such as antioxidants, fragrances, polymers, chelating agents, colorants, deodorants, pigments, emollients, moisturizers, enzymes, foaming accelerators, bactericides, additional antimicrobial agents, foaming agents, pearlescent agents, skin conditioners, stabilizers, superfatting agents, and sunscreens may be added in appropriate amounts. Preferably, these ingredients are added after the saponification step. The formulation may preferably contain sodium metabisulfite, ethylenediaminetetraacetic acid (EDTA), borax, or ethylene hydroxydiphosphonic acid (EHDP).

[0089] The compositions of the present invention are considered to be usable to exert antibacterial effects. Antibacterial agents preferably included to exert this effect include oligodynamic metals or compounds thereof. Preferred metals are silver, copper, zinc, gold, or aluminum. Silver is particularly preferred. In ionic form, silver can exist as a salt or as a compound in any possible oxidation state. Preferred silver compounds are silver oxide, silver nitrate, silver acetate, silver sulfate, silver benzoate, silver salicylate, silver carbonate, silver citrate, and silver phosphate, with silver oxide, silver sulfate, and silver citrate being of particular interest in one or more embodiments. In at least one preferred embodiment, the silver compound is silver oxide. The oligodynamic metal or compound thereof is preferably present in an amount of 0.0001 to 2%, preferably 0.001 to 1%, relative to the weight of the composition. Alternatively, the compositions of the present invention may contain essential oil antibacterial active substances. Preferred essential oil active ingredients that can be included are terpineol, thymol, carbachol, (E)-2-(propa-1-enyl)phenol, 2-propylphenol, 4-pentylphenol, 4-sec-butylphenol, 2-benzylphenol, eugenol, or combinations thereof. More preferred essential oil active substances are terpineol, thymol, carvacrol, or thymol, with terpineol or thymol being the most preferred, and ideally a combination of these two. The essential oil active substances are preferably included in the composition at a concentration of 0.001 to 1% by weight, preferably 0.01 to 0.5% by weight.

[0090] The soap composition can be formed into a rod shape by first saponifying the fat additive with alkali, and then extruding it using a conventional proder. The prodered mass may be cut to any desired size and engraved with any desired markings. A particularly important advantage of the present invention is that, despite the high water content of the solid soap, the composition thus prepared by extrusion can be easily engraved with any desired markings.

[0091] The present invention also relates to a method for producing solid soap, the method comprising a step of incorporating substantially all of the structuring system into the soap during the saponification stage. Preferably, at least the polymer is added during the saponification stage.

[0092] The present invention will be illustrated by the following non-limiting embodiments.

[0093] The term "Total Fat" is widely used in the field of soaps and detergents. This term, abbreviated as "TFM," is used to represent the weight percentage of fatty acids and triglyceride residues contained in a soap composition, excluding associated cations. For soaps with 18 carbon atoms, the associated sodium cations typically amount to about 8% by weight. Other cations, such as zinc, potassium, magnesium, alkylammonium, and aluminum, can also be used as desired.

[0094] The composition of the present invention preferably contains 18 to 75% by weight of TFM, more preferably 20 to 70% by weight of TFM, and most preferably 20 to 65% by weight of TFM, based on the weight of the soap composition.

[0095] The term soap refers to a salt of a fatty acid, and its associated cation can be an alkali metal ion, an alkaline earth metal ion, or an ammonium ion, but alkali metal ions are preferred. Preferably, the cation is a sodium ion or a potassium ion. The soap may be saturated or unsaturated, depending on the properties of the fatty acid and / or oil used in saponification.

[0096] Format and format The soap composition of the present invention may be in any physical form. Preferably, it is in the form of noodles, sheets, flakes, chips, or powder, and more preferably, it is in the form of noodles.

[0097] The term "noodle" is generally used to refer to roughly cylindrical particles produced by extruding and cutting or breaking noodles, which are primarily composed of soap.

[0098] Soap-based noodles are generally manufactured by mixing dried soap chips with colorants and other trace ingredients, homogenizing them in a grinder or refiner, and then extruding them through a perforated plate with fine holes. The noodles are usually extruded continuously and then air-dried and broken into pieces 3-15 mm long. A series of rotating blades can also be attached to the surface of the plate to automatically cut the extruded noodles to the desired length, but this tends to result in some clumping. The degree of clumping depends on the cutting blades and the shape of the holes, and is also greatly influenced by the plasticity and stickiness of the noodles themselves. Even without using rotating blades, the quality of the noodles is determined by the physical properties of the extruded soap. Ideally, the soap should be plastic enough to be sufficiently extruded through the holes of the perforated plate, but not so soft and sticky after extrusion that it clumps. It must also be hard and brittle enough to break into the desired length range.

[0099] While soap noodles can be used for washing and cleaning purposes, in practice, such soap noodles are sold in stores and supermarkets and used as input or raw material for manufacturing soap bars and tablets that consumers use as personal cleaning compositions.

[0100] Accordingly, according to another aspect of the present invention, a solid soap comprising the soap composition of the first aspect of the present invention is disclosed. The solid soap can be of any shape and size, but preferably it is a rectangle with rounded corners and is of a size that can be comfortably held in one hand.

[0101] Other ingredients The soap composition of the present invention, for example, noodles, and especially solid soap, preferably contains one or more of the following components in addition to saponified fats and polymer gels. The selection of these components and their amounts largely depends on the formulation scientist and the intended purpose of producing such noodles or bars.

[0102] Non-soap surfactants The compositions of the present invention preferably include a non-soap surfactant acting as a co-surfactant, which is selected from anionic, nonionic, amphoteric, amphoteric, or cationic surfactants, or a combination thereof. Preferably, the composition contains 0.1 to 15% by weight of the non-soap surfactant. More preferably, the composition contains 2 to 10% by weight, most preferably 3 to 6% by weight, of the non-soap surfactant based on the weight of the soap composition.

[0103] Suitable anionic surfactants include water-soluble salts of organic sulfuric acid reaction products having an alkyl group containing 8 to 22 carbon atoms in its molecular structure, a group selected from sulfonic acid or sulfuric acid ester groups, and mixtures thereof.

[0104] Examples of suitable anionic surfactants include sodium and potassium alcohol sulfates, particularly those obtained by sulfating higher alcohols produced by reducing glycerides from beef tallow or coconut oil; sodium and potassium alkylbenzene sulfonates, for example, those with alkyl groups containing 9 to 15 carbon atoms; sodium alkylglyceryl ether sulfates, particularly ethers of higher alcohols derived from beef tallow and coconut oil; sodium coconut oil fatty acid monoglyceride sulfate; sodium and potassium sulfate salts of sulfate esters of reaction products of 1 mole of higher fatty alcohol and 1 to 6 moles of ethylene oxide; sodium and potassium sulfates of alkylphenol ethylene oxide ethers having 1 to 8 units of ethylene oxide molecules and alkyl groups containing 4 to 14 carbon atoms; and reaction products of fatty acids esterified with isethionic acid and neutralized with sodium hydroxide, for example, those in which the fatty acids are derived from coconut oil and mixtures thereof.

[0105] Preferred water-soluble synthetic anionic surfactants include alkali metal (e.g., sodium, potassium) salts and alkaline earth metal (e.g., calcium, magnesium) salts of higher alkylbenzene sulfonates, mixtures of olefin sulfonates and higher alkyl sulfates, and higher fatty acid monoglyceride sulfates.

[0106] Suitable nonionic surfactants can be broadly described as compounds produced by the condensation of an inherently hydrophilic alkylene oxide group with an organic hydrophobic compound that may be inherently aliphatic or alkyl aromatic. By easily adjusting the length of the hydrophilic or polyoxyalkylene group condensed with a specific hydrophobic group, water-soluble compounds with a desired balance between hydrophilic and hydrophobic elements can be produced.

[0107] Specific examples include condensation products of linear or branched aliphatic alcohols with 8-22 carbon atoms and ethylene oxide, e.g., coconut oil ethylene oxide condensate having 2-15 moles of ethylene oxide per mole of coconut alcohol; condensates of alkylphenols containing 6-12 carbon atoms in an alkyl group and 5-25 moles of ethylene oxide per mole of alkylphenol; condensates of ethylenediamine and propylene oxide reaction products and ethylene oxide, condensates containing 40-80 cents by weight of polyoxyethylene groups and having a molecular weight of 5,000-11,000; and tertiary amine oxides of structure R3NO (one group R having 8-18 carbon atoms). Examples include alkyl groups (where R is an alkyl group and the others are methyl, ethyl, or hydroxyethyl groups), such as dimethyldodecylamine oxide; tertiary phosphine oxides of structure R3PO (where one group R is an alkyl group with 10 to 18 carbon atoms and the others are alkyl or hydroxyalkyl groups with 1 to 3 carbon atoms each), such as dimethyldodecylphosphine oxide; and dialkyl sulfoxides of structure R2SO (where R is an alkyl group with 10 to 18 carbon atoms and the others are methyl or ethyl), such as methyltetradecyl sulfoxide; fatty acid alkylolamides; and alkylene oxide condensates of fatty acid alkylolamides and alkyl mercaptans.

[0108] Suitable cationic surfactants that can be incorporated include alkyl-substituted quaternary ammonium halide salts, such as bis(hydrogenated fat)dimethylammonium chloride, cetyltrimethylammonium bromide, benzalkonium chloride, and dodecylmethylpolyoxyethyleneammonium chloride, as well as amine salts and imidazoline salts, such as primary, secondary, and tertiary amine hydrochlorides and imidazoline hydrochloride.

[0109] Suitable amphoteric surfactants are derivatives of aliphatic secondary and tertiary amines containing an alkyl group with 8 to 18 carbon atoms and an aliphatic group substituted with an anionic water-soluble group, such as sodium 3-dodecylaminopropionate, sodium 3-dodecylaminopropanesulfonate, and sodium N-2-hydroxydodecyl-N-methyltaurate.

[0110] Suitable amphoteric surfactants are derivatives of aliphatic quaternary ammonium, sulfonium, and phosphonium compounds having an aliphatic group of 8 to 18 carbon atoms and an aliphatic group substituted with an anionic water-soluble group, such as 3-(N,N-dimethyl-N-hexadecylammonium)propane-1-sulfonate betaine, 3-(dodecylmethylsulfonium)propane-1-sulfonate betaine, and 3-(cetylmethylphosphonium)ethanesulfonate betaine.

[0111] Further examples of suitable detergent active compounds include compounds commonly used as surfactants, as described in the well-known texts "Surface Active Agents," Volume I (by Schwartz and Perry) and "Surface Active Agents and Detergents," Volume 2 (by Schwartz, Perry, and Berch).

[0112] Milking agents: In this composition, an opaque agent may be optionally present. If an opaque agent is present, the cleansing bar is generally opaque, i.e., "milky." Examples of opaque agents include titanium dioxide and zinc oxide. Particularly preferred opaque agents that can be used when an opaque rather than transparent soap composition is desired are monostearic acid or ethylene glycol distearate, which is, for example, in the form of a 20% solution of sodium lauryl ether sulfate. An alternative opaque agent is zinc stearate.

[0113] Beneficial agent Preferably, the soap composition of the present invention contains one or more beneficial agents not previously disclosed. Preferably, the beneficial agents are emollients, sunscreens, anti-aging compounds, or humectants and wetting agents. These agents can be added at an appropriate stage in the process. Some beneficial agents may be introduced as macrodomains.

[0114] Examples of moisturizers and humectants include cetyl alcohol, ethoxylated castor oil, paraffin oil, lanolin, and their derivatives. Silicone surfactants and / or silicone emollients such as DC® 3225C (manufactured by Dow Corning), and silicone compounds such as silicone oil (DC-200®, manufactured by Dow Corning) may also be included. Further examples include glycerin, oat kernel flour, petrolatum, aquaporins, and hydroxyethyl urea.

[0115] Sunscreens such as 4-tert-butyl-4′-methoxydibenzoylmethane (sold by Giboudan under the trade name PARSOL® 1789) or 2-ethylhexyl methoxycinnamate (sold by Giboudan under the trade name PARSOL® MCX), or other UV-A and UV-B sunscreens may be added. Further examples include Helioplex® (diethylhexyl naphthylate), Ensulizole®, ethylhexyl salicylic acid, Tinosorb® (S&M), Octocrylene®, and Mexoryl®.

[0116] Lipids such as cholesterol, ceramides, and pseudoceramides, as well as scrubbing particles such as polyethylene beads, walnut shells, apricot seeds, flower petals, and seeds may be present.

[0117] This composition may also contain other ingredients conventionally used in soap, such as foaming agents, colorants and milking agents, as well as skin tone modifiers such as hexylresorcinol, soybean extract (Bowman-Burk inhibitor), octadecendioic acid (Arlatone® DC), niacinamide, Seppiwhite®, acetylglucosamine, Pitera extract, Symwhite®, and Melano-block® (calcium pantothenate). Furthermore, the composition of the present invention may also contain anti-aging ingredients such as retinol, hyaluronic acid, collagen, CoQ10 (ubiquinone), retinyl propionate, peptides, retinyl palmitate, jasmonic acid derivatives, and Proxylane®.

[0118] Other additives may include disinfectants and preservatives. These components are usually present in amounts of less than 2% by weight, typically less than 0.5% by weight, and may include silver salts and silver compounds, thymol, terpineol and its analogs, ZPTO, chlorooxylenol, PCMX, triclosan and trichlorocarbanilide, etc.

[0119] The soap composition may contain a structuring agent. The structuring agent may include water-insoluble particulate matter. The structuring agent can be incorporated individually or in combination in a proportion of 0 to 25% by weight. Preferred inorganic particulate materials include talc and calcium carbonate. Talc has the chemical formula Mg3Si4(O) 10 It is a magnesium silicate mineral with a layered silicate structure represented by (OH)2, and is available in hydrate form. Talc exists in a platy form and is substantially lipophilic / hydrophobic.

[0120] Other examples of arbitrary insoluble inorganic particulate materials include zeolites, aluminates, silicates, phosphates, insoluble sulfates, clays (e.g., kaolin, pottery clay), titanium dioxide, zinc oxide, and combinations thereof.

[0121] The composition of the present invention may further contain a crack inhibitor such as an acrylate polymer.

[0122] In this specification, the term “slip modifier” is used to refer to a substance that, when present at relatively low levels (typically less than 1.5% by total weight of the solid soap composition), significantly reduces the sensation of friction between wet solid soap and the skin. The most suitable slip modifiers are useful, either alone or in combination, at levels of 1% or less, preferably 0.05–1%, and more preferably 0.05–0.5%.

[0123] The composition of the present invention may contain 0.01 to 0.08% modified polyethylene glycol as a lubrication agent and / or for other sensory effects. The composition of the present invention may also contain 0.1 to 0.05% modified ethylene acrylate copolymer as a beneficial agent.

[0124] Suitable lubrication agents include petrolatum, wax, lanolin, polyalkanes, polyalkenes, polyalkylene oxides, high molecular weight polyethylene oxide resins, silicones, polyethylene glycol, and mixtures thereof.

[0125] Up to 3% free fatty acids (FFAs), such as coconut fatty acids, PKO fatty acids, and lauric acid, are commonly used in solid soaps to improve overall soap quality and process. When free fatty acids exceed 3%, the soap becomes soft and sticky, potentially negatively affecting one or more physical properties. In at least one embodiment, the FFA level in the composition of the present invention is 0.05 to 3% by weight, preferably 0.1 to 2% by weight, and more preferably 0.1 to 1.5% by weight.

[0126] Various test methods have been used to determine the properties of soap compositions.

[0127] The test method is a hardness test protocol using a 30° conical probe that penetrates to a depth of 15 mm. Another test is the rate of wear (RoW), which relates to the amount of material lost by the solid soap product under controlled conditions. These usage conditions closely mimic how consumers use the product. Further tests are conducted to determine the extent of physical damage that may (or may not) occur from the washing and drying procedures of the solid soap. Yet another test determines the amount of "mush," which is defined as the jelly-like, creamy substance that forms when toilet bar soap absorbs water. The mash immersion test provides a numerical representation of the amount of mash formed on the solid soap.

[0128] All of the aforementioned test methods are described in US20190016994A1 (Unilever).

[0129] Method of the present invention According to the second aspect, i) A step in which fat is saponified with alkali to produce a saponified product; ii) The step of obtaining a soap mass by adding 1 to 45% by weight of starch-containing complex sugar or starch-containing modified complex sugar and water to the solid soap composition; and iii) Step of extruding the soap mass obtained in step (ii) to obtain solid soap according to the first embodiment. A method for producing a soap composition according to a first embodiment, comprising: Add 0.01 to 5% by weight of the solid soap composition to the PPAR activator in step (i) or (ii). A method is disclosed for adding an electrolyte in an amount of 0.1 to 5% by weight of the solid soap composition in step (i) or (ii).

[0130] The electrolyte is preferably selected from the group consisting of sodium carbonate, sodium citrate, sodium sulfate, sodium chloride, and mixtures thereof, more preferably sodium sulfate and / or sodium chloride, and most preferably sodium sulfate.

[0131] In the method of the present invention, it is preferable to add a non-soap surfactant in step (i).

[0132] In the method of the present invention, the soap composition preferably contains 20 to 80% by weight of total fat and 10 to 50% by weight of water.

[0133] It is preferable that the sodium sulfate content is in the range of 0.1 to 2% by weight of the total weight of the composition.

[0134] In the method of the present invention, the starch is preferably natural starch, pregelatinized starch, converted starch, or a mixture thereof, and most preferably in the range of 1 to 45% by weight of the solid soap composition.

[0135] In the method of the present invention, the PPAR activator is 12-hydroxystearic acid, cisparinaric acid, trans-7-octadecenoic acid, cis-5,8,11,14,17eicosapentaenoic acid, cis-4,7,10,13,16,19docosahexenoic acid, conjugated linoleic acid (c9,t11), columbinic acid, linolenic acid, ricinolysic acid, stearidonic acid, 2-hydroxystearic acid, alpha-linolenic acid, ara It is preferable to select from the group comprising chidonic acid, cis-11,14-eicosadienoic acid, conjugated linoleic acid (t10,c12), conjugated linoleic acid (t9,t11), conjugated linoleic acid (a 50:50 mixture of c9,t11 and t10,c12), corianderic acid, linoleric acid, monopetroceric acid, petroceric acid, ricinoleic acid, stearolic acid, tuja extract, and transvaccenic acid, or combinations thereof. The most preferred PPAR activator is 10-hydroxystearic acid or 12-hydroxystearic acid, or a combination thereof.

[0136] In step (i), the electrolyte is preferably added in an amount ranging from 0.1% to 5% by weight of the total weight of the composition.

[0137] The present invention provides the use of a PPAR activator, preferably hydroxystearic acid and a starch-containing complex sugar, in solid soap containing 10 to 50% by weight of water to achieve a hardness of at least 3 kg-F as measured at 42°C.

[0138] The solid soap composition according to the present invention can be manufactured on a commercial scale by any method known to those skilled in the art. The soap may be a cast-melt solid soap or an extruded solid soap. Preferably, the solid soap composition of the present invention is manufactured using an extrusion pathway.

[0139] A specific method that can be used with the above-described method for producing the soap composition.

[0140] The present invention provides the use of a PPAR activator, preferably hydroxystearic acid and starch-containing complex sugar, in a soap composition according to a first embodiment for giving the skin a radiant glow, compared to solid soap compositions that do not contain a PPAR activator, preferably hydroxystearic acid and starch-containing complex sugar, as measured by various comparative methods.

[0141] The present invention provides the use of a PPAR activator, preferably hydroxystearic acid and a starch-containing complex sugar, in a soap composition according to a first embodiment for uniformizing skin tone, compared to solid soap compositions without PPAR activators and starch-containing complex sugars as measured by various comparative methods.

[0142] The present invention provides the use of a PPAR activator, preferably hydroxystearic acid and a starch-containing complex sugar, in a soap composition according to a first embodiment for giving the skin a translucent appearance and fading blemishes, compared to solid soap compositions without PPAR activators and starch-containing complex sugars measured by various comparative methods.

[0143] The present invention provides the use of a PPAR activator, preferably hydroxystearic acid and a starch-containing complex sugar, in a soap composition according to a first embodiment for other skin health, anti-aging, barrier, and appearance effects, as measured by various methods compared with solid soap compositions that do not contain a PPAR activator and a starch-containing complex sugar. The present invention will be illustrated by the following non-limiting examples. [Examples]

[0144] The soap compositions in the examples were manufactured in accordance with the present invention.

[0145] The soap manufacturing process begins with the basic step of saponifying the fat input with alkali to create a soap mass. This step may or may not include other excipients or additives such as electrolytes and polyhydric alcohols (but not limited to these). The required amounts of fatty acids and other raw materials are weighed and placed in a mixer. An alkaline aqueous solution was used for this neutralization reaction. The completion of neutralization was confirmed by a phenolphthalein indicator test, and additional alkali was added as needed to ensure the completion of the neutralization reaction. In-process quality checks are performed before the soap mass is sent to further steps (such as passing the soap mass through cooling rolls, then through a refining machine to convert it into noodle form, etc., but not limited to these).

[0146] In the final stage, the soap noodles are added to the mixer and ground. Other formulation additives, including starch, 12HSA, etc. (but not limited to these), are added as needed and mixing continues. Any necessary colorants are dissolved in water and then added to the contents of the mixer. Finally, the fragrance is added and mixing continues until a uniform macro-mixture is obtained. The resulting mixture is then dropped and subsequently sent to further machining processes, such as extrusion from a proder post (but not limited to this), and stamped into solid soap of the desired shape, size, and brand logo.

[0147] In accordance with the present invention, soap compositions (E1 and E2) were prepared, each having a starch level of 11% by weight and 17% by weight, respectively, based on the solid soap composition of the present invention. These were prepared using the formulations shown in Table 1, and formulation E3 was outside the scope of the present invention as it did not contain starch. All soap compositions contained hydroxystearic acid.

[0148] Compositions E1 to E3 were evaluated for clinical dermatological assessment, and the mean CFB change from the baseline value was obtained. Consumer testing was then conducted based on a 1-5 scale that reflected consumer perception.

[0149] Luminosity and Radiance - Composite Luminosity Scale Brightness and radiance were assessed based on the method provided in (Kumari R et al. Int J Res Dermatol. 2022 Nov;8(6):593-600). A double-blind, randomized clinical trial was conducted under the supervision of dermatologists, and dermatologists performed the assessments. The trial included spotted panelists with a Fitzpatrick scale score of 3–5, at the discretion of the dermatologists. Panelists were given a wash-off period for acclimatization, and the trial period was extended from a minimum of one week to a maximum of twelve weeks. The dermatologists used in this study were trained and validated in their assessment techniques. Four visual skin characteristics that primarily influence G&R ratings were identified as brightness, clarity, skin tone uniformity, and spot reduction.

[0150] Scale and Calculation - The "Multi-Parameter Composite G&R Scale" is based on visual perceptions such as radiance, clarity, skin tone uniformity, and blemish reduction. Each parameter is independently evaluated on a score from 1 to 5, and an intermediate scoring system is also provided. This scale is suitable for all skin tones and ethnicities. The sensitivity of the scale has been validated in relation to the visual representation of the scale on skin of people of color using various skin products applied to skin of people of color.

[0151] Participants reporting on skin tone uniformity were instructed to wash their face and forearms with water and acclimatized to the environment at the testing center. After acclimatization, subjects were evaluated by a trained dermatologist using a "skin tone uniformity scale" based on an assessment of skin tone variability across the entire test area. Skin tone uniformity was rated on a scale of 1 to 5, with lower values ​​indicating uneven skin tone and higher values ​​indicating uniform skin tone. Skin tone uniformity is often subtle and the result of phenotypic changes that are difficult to recognize, and a statistically significant increase in skin tone uniformity observed after product use indicates a substantial improvement in skin tone uniformity.

[0152] For the skin clarity assessment, subjects were instructed to wash their face and forearms with water and acclimatized at the testing center. After acclimatization, trained dermatologists assessed the subjects using a skin clarity scale based on reflectance / luminance evaluation. Skin clarity was rated on a scale of 1 to 5, with lower values ​​indicating less skin clarity and higher values ​​indicating higher skin clarity. Skin clarity is often subtle and the result of phenotypic changes that are difficult to recognize, and a statistically significant increase in skin clarity observed after product use indicates an improvement in skin clarity.

[0153] Participants reporting on spot reduction evaluations were instructed to wash their face and forearms with water and were acclimatized at the testing center. After acclimatization, participants were evaluated by a trained dermatologist using a spot reduction scale. Spot reduction was rated on a scale of 1 to 5, with lower values ​​indicating no change in spots and higher values ​​indicating a noticeable reduction or decrease in the evaluated spots. Spot reduction is in most cases subtle and results from phenotypic changes that are difficult to recognize, and a statistically significant increase in the spot reduction score observed after product use indicates spot reduction.

[0154] Consumer testing The study used consumers from different ethnic groups, with different diaspora origins and different starting skin types. The cross-regional study, involving over 1000 consumers, showed that products with soap compositions E1–E3 were preferred within one week of use. This included parameters such as radiance, soft and smooth skin, and gentleness on the skin. Analysis was performed using standard industry statistical methods. Table 1 shows an excerpt of data from a single market cluster. The scale is 1–5, where 1 means "strongly disagree" and 5 means "strongly agree," based on the following questions.

[0155] i. Is this soap gentle and non-irritating to the skin?

[0156] ii. Does this soap soften and smooth the skin?

[0157] iii. Does this soap give the skin a beautiful glow?

[0158] Table 1: [Table 1] From the data presented above, it is clear that compositions E1 and E2 prepared according to the present invention show a synergistic effect and significantly superior results compared to E3, which contains only starch, in terms of improving skin effects such as skin radiance and glow, uniformity of skin tone, skin transparency, and fading of blemishes. Furthermore, consumer test data also showed that consumers preferred the soap compositions of the present invention, namely E1 and E2, over E3, which is a similar composition but falls outside the scope of the present invention.

Claims

1. i. Total fat content of 20–80% by weight; ii. 0.1–5% by weight of electrolytes; iii. 0.001% to 5% by weight of PPAR activator; iv. Starch-containing complex carbohydrates in an amount of 1-45% by weight; and v. 10-50% by weight of water A solid soap composition containing, A solid soap composition wherein the PPAR activator is 10-hydroxystearic acid, 12-hydroxystearic acid, or a combination thereof.

2. The soap composition according to claim 1, wherein the complex carbohydrate contains at least 50% by weight of starch based on the weight of the complex carbohydrate, and the starch is natural unegelatinized starch, pregelatinized starch, or natural partially unegelatinized starch.

3. The soap composition according to claim 1 or 2, wherein the electrolyte comprises a compound selected from the group consisting of sodium carbonate, sodium citrate, sodium sulfate, sodium chloride, and mixtures thereof.

4. The soap composition according to any one of claims 1 to 3, wherein the composition has a pH in the range of 9 to 13 when measured with a 4% solution containing distilled water at 25°C.

5. i) Saponifying fat with alkali to produce saponified products; ii) Adding 1 to 45% by weight of starch-containing complex sugar or starch-containing modified complex sugar and water to the solid soap composition to obtain a soap mass; and iii) Extrude the soap mass obtained in step (ii) to obtain the solid soap composition. A method for producing a soap composition according to any one of claims 1 to 4, comprising: The PPAR activator is added in step (i) or (ii); The electrolyte is added in step (i) or (ii); A method wherein the PPAR activator is 10-hydroxystearic acid, 12-hydroxystearic acid, or a combination thereof.

6. The method according to claim 5, wherein the soap composition contains 20 to 80% by weight of total fat and 10 to 50% by weight of water.

7. The method according to claim 5 or 6, wherein the complex carbohydrate contains at least 50% by weight of starch, and the starch is natural unegelatinized starch, pregelatinized starch, or natural partially unegelatinized starch.

8. The method according to any one of claims 5 to 7, wherein the electrolyte is selected from the group consisting of sodium carbonate, sodium citrate, sodium sulfate, sodium chloride, and mixtures thereof.

9. The use of a PPAR activator and a starch-containing complex sugar in a soap composition according to any one of claims 1 to 4, to provide a radiance to the skin compared to a solid soap composition that does not contain a PPAR activator and a starch-containing complex sugar.

10. To provide a more uniform skin tone compared to the solid soap composition that does not contain PPAR activators and starch-containing complex carbohydrates, i. Total fat content of 20–80% by weight; ii. 0.1–5% by weight of electrolytes; iii. 10-50% by weight of water The use of a PPAR activator in a soap composition containing the above, in a weight percentage of the obtained soap composition, in an amount of 0.001% to 5% by weight, and a starch-containing complex sugar in an amount of 1 to 45% by weight, The use of the PPAR activator is 10-hydroxystearic acid, 12-hydroxystearic acid, or a combination thereof.

11. To provide skin transparency compared to a solid soap composition that does not contain PPAR activators and starch-containing complex carbohydrates, i. Total fat content of 20–80% by weight; ii. 0.1–5% by weight of electrolytes; iii. 10-50% by weight of water The use of a PPAR activator in a soap composition containing the above, in a weight percentage of the obtained soap composition, in an amount of 0.001% to 5% by weight, and a starch-containing complex sugar in an amount of 1 to 45% by weight, The use of the PPAR activator is 10-hydroxystearic acid, 12-hydroxystearic acid, or a combination thereof.

12. Compared to solid soap compositions that do not contain PPAR activators and starch-containing complex carbohydrates, for the removal of skin blemishes, i. Total fat content of 20–80% by weight; ii. 0.1–5% by weight of electrolytes; iii. 10-50% by weight of water The use of a PPAR activator in a soap composition containing the above, in a weight percentage of the obtained soap composition, in an amount of 0.001% to 5% by weight, and a starch-containing complex sugar in an amount of 1 to 45% by weight, The use of the PPAR activator is 10-hydroxystearic acid, 12-hydroxystearic acid, or a combination thereof.

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