Mild liquid personal cleansing composition

Abstract

The present invention provides a cleaning composition comprising 0.1 to 40 wt% of a non-soap surfactant; 0.05 to 2.5 wt% of a rheology modifier; 0.05 to 5 wt% of starch; and 5 to 80 wt% of water, wherein at least 80 wt% of the starch particles are in a spherical or elliptical morphology.

Description

Technical Field

[0001] This invention relates to mild liquid compositions, and more particularly to personal cleansing compositions. The invention pertains to the field of liquid cleansing compositions that are gentle and mild on the skin and provide a moisturizing finish. More specifically, the invention relates to such compositions containing starch and polymers. Background Technology

[0002] Skin degenerates due to skin conditions, environmental damage (wind, air conditioning, central heating), or through the normal aging process (chronoaging), which can be accelerated by sun exposure (photoaging). In recent years, the demand for cosmetic compositions and beauty methods to improve the appearance and condition of the skin has increased significantly.

[0003] Many people are concerned about their skin quality and appearance and want to work on it. Dermatologists also want to ensure that cleansing products support the skin and help improve its quality. Essentially, cleansing products should care for the skin and be applied back to it.

[0004] Most people consider skin health and appearance to be one of the key indicators of their own beauty and well-being. This is influenced by factors such as age, hormonal changes, the occurrence of acne, and exposure to sunlight and pollution.

[0005] Therefore, there is always a need for a composition that can improve the appearance of the skin, and it is highly desirable for consumers to include skin-beneficial ingredients in consumer products that are already part of their daily cleansing routine and do not require any additional skin care steps.

[0006] Therefore, cleansing compositions that meet the immediate need for skin improvement need to be affordable and work to enhance the skin with continued use while having excellent foaming properties and skin feel.

[0007] There is a need for a skin cleansing composition that contains fewer chemical skin-active ingredients, yet still provides enhanced skin benefits, the desired sensory experience during and after use, and excellent foaming properties. Summary of the Invention

[0008] Personal care compositions typically leave a dry aftertaste and require subsequent application of a moisturizing lotion. This invention provides a composition that is gentle and soothing to the skin, leaving it feeling smooth and moisturized.

[0009] A first aspect of the present invention provides a liquid cleaning composition comprising: i. 0.1 to 40% by weight of non-soap surfactants; ii. 0.05 to 2.5% by weight of rheology modifier; iii. 0.05 to 5% by weight of starch; and iv. 5 to 80% by weight of water; At least 80% by weight of the starch granules are round or oval in shape.

[0010] A second aspect of the invention provides the use of 0.05 to 5% by weight of starch based on the obtained cleaning composition in a cleaning composition comprising the following components to provide better foam stability compared to said cleaning composition without starch: i. 0.1 to 40% by weight of non-soap surfactants; ii. 0.05 to 2.5% by weight of rheology modifier; iii. 5 to 80% by weight of water; At least 80% by weight of the starch granules are round or oval in shape.

[0011] A third aspect of the invention provides the use of 0.05 to 5% by weight of starch based on the obtained cleaning composition in a cleaning composition comprising the following components for providing moisturizing compared to a starch-free cleaning composition: i. 0.1 to 40% by weight of non-soap surfactants; ii. 0.05 to 2.5% by weight of rheology modifier; iii. 5 to 80% by weight of water; At least 80% by weight of the starch granules are round or oval in shape.

[0012] A fourth aspect of the invention provides the use of 0.05 to 5% by weight of starch based on the obtained cleaning composition in a cleaning composition comprising the following components for providing skin clarity compared to a starch-free composition: i. 0.1 to 40% by weight of non-soap surfactants; ii. 0.05 to 2.5% by weight of rheology modifier; iii. 5 to 80% by weight of water; The starch in the cleaning composition comprises at least 80% by weight of the starch particles in a round or oval shape.

[0013] A fifth aspect of the invention provides the use of 0.05 to 5% by weight of starch based on the obtained cleaning composition in a cleaning composition comprising the following components to provide a gloss and translucency compared to a starch-free composition: i. 0.1 to 40% by weight of non-soap surfactants; ii. 0.05 to 2.5% by weight of rheology modifier; iii. 5 to 80% by weight of water; The starch in the cleaning composition comprises at least 80% by weight of the starch particles in a round or oval shape.

[0014] Another aspect of the present invention provides a process for manufacturing a liquid personal care composition according to the first aspect.

[0015] Another aspect of the invention provides the use of starch and polymers (preferably acrylic polymers) in liquid cleaning compositions for providing moisturizing effects.

[0016] These and other aspects, features, and advantages will become apparent to those skilled in the art from the following detailed description and appended claims. For the avoidance of doubt, any feature of one aspect of the invention may be used in any other aspect of the invention.

[0017] The term "comprising" does not imply limitation to any element subsequently stated, but rather includes unspecified elements of primary or secondary functional importance. In other words, the listed steps, elements, or options need not be exhaustive. Whenever the terms "comprising" or "having" are used, these terms mean equivalent to "comprising" as defined above. In other words, the listed steps or options need not be exhaustive. It should be noted that the examples given in the following description are intended to illustrate the invention and not to limit the invention to those examples alone. Similarly, unless otherwise stated, all percentages are by weight / weight percentage.

[0018] Except as expressly stated in the operational and comparative examples or elsewhere, all figures in this specification and claims indicating the amount or reaction conditions of the material, the physical properties of the material, and / or its use should be understood to be modified by the word “about”.

[0019] Numerical ranges expressed in the format "x to y" are understood to include both x and y. When multiple preferred ranges for a particular feature are described in the format "x to y", it is understood that combinations of all ranges with different endpoints can also be considered.

[0020] It should be noted that when specifying any concentration or amount range, any particular upper limit concentration can be associated with any particular lower limit concentration or amount.

[0021] To gain a more complete understanding of the above and other features and advantages of the present invention, reference should be made to the following detailed description of preferred embodiments. Detailed Implementation

[0022] This invention relates to aqueous skin cleansing compositions suitable for topical application to clean the human body (e.g., skin and hair). In particular, it relates to liquid cleansing compositions containing starch and polymers that are gentle and mild on the skin and provide a moisturizing finish.

[0023] This invention provides a cleaning composition comprising: i. 0.1 to 40% by weight of non-soap surfactants; ii. 0.05 to 2.5% by weight of rheology modifier; iii. 0.05 to 5% by weight of starch; and iv. 5 to 80% by weight of water; At least 80% by weight of the starch granules are round or oval in shape.

[0024] Unexpected benefits have been observed from the incorporation of starch into liquid shower gel compositions. These benefits include improved overall skin feel and foaming properties at reduced surfactant levels. Starch also synergizes with other compositional components to improve parameters that ultimately lead to higher levels of skin care benefits, as well as to improve overall skin feel and hydration. Surprisingly, starch in liquids offers a natural, renewable, and safe alternative to siloxanes in terms of skin feel and smoothness.

[0025] Surprisingly, the morphology of starch granules was also found to deliver sensory benefits and efficient cleaning while reducing surfactant content. Morphological differences associated with plant origins determine skin feel and sensation. In surfactant-based cleansing systems, the synergistic combination of starch and polymers facilitates the cleansing process and allows for efficient cleaning at lower surfactant levels while providing additional skin benefits. This reduces reliance on surfactants to deliver the desired consumer benefits and provides a cleansing composition that requires fewer skin-active ingredients to deliver skin benefits, has less surfactant, and is less drying on the skin.

[0026] For the purposes of this invention, round and elliptical particles include not only geometrically round and elliptical particles, but also particles with irregular smooth morphology on their surface.

[0027] For the purposes of this invention, the term "natural" when used with respect to starch means that the starch has not been chemically modified.

[0028] Cleaning Composition The present invention provides a cleaning composition comprising: 0.1 to 40 wt% of a non-soap surfactant; 0.05 to 2.5 wt% of a rheology modifier; 0.05 to 5 wt% of starch; and 5 to 80 wt% of water; wherein at least 80 wt% of the starch particles are in a spherical or elliptical morphology.

[0029] The cleaning compositions of the present invention provide benefits such as gentleness, mildness, and moisturizing.

[0030] Preferably, in the composition of the present invention, the starch is pregelatinized, naturally ungelatinized, partially gelatinized, or partially hydrolyzed.

[0031] Preferably, in the compositions of the present invention, the starch particle size is in the range of 2-50 µm.

[0032] Preferably, in the compositions of the present invention, the rheology modifier is selected from thickening polymers, suspension polymers, and electrolyte salts, or a combination of both.

[0033] Preferably, in the composition of the present invention, the suspension polymer comprises an acrylic polymer. More preferably, the suspension polymer is an acrylic polymer.

[0034] Preferably, in the compositions of the present invention, the non-soap surfactant is selected from anionic surfactants, amphoteric surfactants, amphoteric surfactants, nonionic surfactants, and mixtures thereof.

[0035] Preferably, the composition of the present invention contains 0.1 to 3% by weight of a chelating agent. Preferably, the chelating agent is selected from ethylenediaminetetraacetic acid (EDTA) or diethylenetriaminepentaacetic acid (DTPA), sodium gluconate, sodium citrate, and mixtures thereof.

[0036] Preferably, the composition of the present invention comprises a preservative in the range of 0.1 to 5% by weight of the composition. Preferably, the preservative is benzoic acid or a derivative thereof, a paraben derivative, or a sorbate derivative, or a mixture or combination thereof. More preferably, the preservative is selected from sodium benzoate, benzoic acid, potassium sorbate, methylparaben, ethylparaben, propylparaben, butylparaben, and heptylparaben, or combinations thereof.

[0037] Non-soap surfactants Preferably, the cleaning composition comprises 0.1 to 40% by weight, more preferably 0.5 to 38% by weight, even more preferably 1 to 35% by weight, and most preferably 2.5 to 30% by weight, of a non-soap surfactant based on the weight of the cleaning composition. The compositions of the present invention may contain anionic surfactants, nonionic surfactants, cationic surfactants, or amphoteric surfactants.

[0038] The synthetic anionic detergent active material that can be used in this invention can be an aliphatic sulfonate, such as a primary alkane (e.g., C8-C4). 22 ) sulfonates, primary alkanes (e.g., C8-C 22 disulfonates, C8-C 22 Olefin sulfonates, C8-C 22Hydroxyalkyl sulfonates or alkyl glycerol ether sulfonates (AGS); or aromatic sulfonates, such as alkylbenzene sulfonates. Anionic surfactants can also be alkyl sulfates (e.g., C14). 12 -C 18 Alkyl sulfates or alkyl ether sulfates (including alkyl glycerol ether sulfates). Alkyl ether sulfates include those having the following formula: RO(CH2CH2O) n SO3M Wherein R is an alkyl or alkenyl group having 8 to 22 carbons, preferably 12 to 18 carbons, and n has an average value equal to or greater than 1.0, preferably less than 3; and M is a solubilizing cation, such as sodium, potassium, ammonium, or substituted ammonium. Ammonium dodecyl ether sulfate and sodium dodecyl ether sulfate are preferred.

[0039] Anionic surfactants can also be alkyl sulfonyl succinates (including mono- and di-alkyl, e.g., C6-C). 22 sulfosuccinates; alkyl and acyl taurates, alkyl and acyl sarcosinates, sulfoacetates, C8-C 22 Alkyl phosphates, alkyl phosphates and alkoxyalkyl phosphates, acyl lactates, C8-C 22 Monoalkyl succinates and maleates, sulfoacetates, alkyl glucosides and acyl hydroxyethyl sulfonates, etc.

[0040] Sulfosuccinates can be monoalkyl sulfosuccinates having the following formula: R 4 O2CCH2CH(SO3M)CO2M; and The following formula is amide-MEA sulfosuccinate: R 4 CONHCH2CH2O2CCH2CH(SO3M)CO2M Where R 4 The range is C8-C 22 Alkyl group and M is a solubilizing cation.

[0041] Sarcosine salts are usually represented by the following formula: R 1 CON(CH3)CH2CO2M, Where R 1 The range is C8-C 20 Alkyl or alkenyl (or preferably C8-C) 20 (carbon chain) and M is a solubilizing cation.

[0042] Taurine salts are usually represented by the following formula: R 2 CONR 3 CH2CH2SO3M Where R2 The range is C8-C 20 Alkyl, R 3 The range is H or C1-C4 alkyl and M is a solubilizing cation.

[0043] The cleaning composition of the present invention may contain C8-C 18 Acyl hydroxyethyl sulfonates. These esters are prepared by reaction of an alkali metal hydroxyethyl sulfonate with a mixture of aliphatic carboxylic acids having 6 to 18 carbon atoms and an iodine value less than 20. At least 75% of the mixed carboxylic acids have 12 to 18 carbon atoms and up to 25% have 6 to 10 carbon atoms.

[0044] Acylhydroxyethyl sulfonate can be an alkoxylated hydroxyethyl sulfonate, as described in U.S. Patent No. 5,393,466 to Ilardi et al., entitled “Fatty Acid Esters of Polyalkoxylated Isethonic Acid,” issued February 28, 1995; which is incorporated herein by reference. Such compounds have the following general formula: RC-(O)OC(X)HC(Y)H2-(OCH-CH2) m -SO3M + , Where R is an alkyl group having 8 to 18 carbons, m is an integer from 1 to 4, X and Y are hydrogen or alkyl groups having 1 to 4 carbons, and M + It is a monovalent cation, such as sodium, potassium or ammonium.

[0045] The most preferred anionic surfactant used in the compositions of the present invention is selected from sulfonic acids, their salts, alkyl ether sulfates, mixtures and combinations thereof. The most preferred anionic surfactant may include sodium dodecyl ether sulfate, its derivatives, such as ethylene oxide derivatives, etc.

[0046] Preferably, the cleaning composition comprises an anionic surfactant ranging from 0.1 to 40% by weight of the composition, more preferably from 0.5 to 38% by weight, even more preferably from 1 to 35% by weight, and most preferably from 2.5 to 30% by weight of a non-soap surfactant.

[0047] Preferably, the cationic surfactant used for the purposes of this invention is, for example, a quaternary ammonium surfactant, including but not limited to: benzalkonium chloride, alkyl betaine, alkylamidopropyl betaine, alkylamidopropyl hydroxysulfonyl betaine, alkylamine, alkylimidazolium, and ethoxylated amine. Preferably, the cleaning composition contains 1 to 25% by weight of the composition, more preferably 8 to 23% by weight, further more preferably 10 to 22% by weight, and most preferably 11 to 21% by weight of the cationic surfactant.

[0048] Preferably, the amphoteric surfactant used for the purposes of this invention is, for example, an acyl / dialkylethylenediamine, such as sodium acylamphoacetate, cocamidopropyl betaine (CAPB), disodium acylamphodipropionate, disodium alkylamphodiacetate, sodium acylamphohydroxypropyl sulfonate, disodium acylamphodiacetate and sodium acylamphodipropionate, or N-alkyl amino acids, such as aminopropylalkylglutamine, alkylaminopropionate, sodium alkylimidazolium dipropionate and lauroylamphocarboxyglycinate. Preferably, the cleaning composition comprises 0.1 to 40% by weight of an amphoteric surfactant, more preferably 0.5 to 38% by weight, even more preferably 1 to 35% by weight, and most preferably 2.5 to 30% by weight of a non-soap surfactant.

[0049] Preferably, the composition comprises a combination of anionic surfactant and amphoteric surfactant (e.g., betaine), especially when the anionic surfactant accounts for 50% or more of such synthetic surfactant mixtures.

[0050] One or more nonionic surfactants can be used as co-surfactants in the cleaning compositions of the present invention. The nonionic surfactants are preferably used at levels as low as 0.1 wt%, 0.5 wt%, or 1 wt% and as high as 30 wt%, 35 wt%, or 40 wt%. Nonionic surfactants that can be used particularly include the reaction products of compounds having hydrophobic groups and reactive hydrogen atoms (e.g., fatty alcohols, acids, amides, or alkylphenols) with alkyl oxides (especially ethylene oxide alone or with propylene oxide). Specific nonionic detergent compounds are alkyl (C6-C4) compounds. 22 ) Phenolic ethylene oxide condensates, aliphatic (C8-C) 18 These are products obtained by the condensation of straight-chain or branched primary or secondary alcohols with ethylene oxide, as well as products obtained by the condensation of ethylene oxide with the reaction products of propylene oxide and ethylenediamine. Other so-called nonionic detergent compounds include long-chain tertiary amine oxides, long-chain tertiary phosphine oxides, and dialkyl sulfoxides.

[0051] Preferred nonionic surfactants include alkyl polyglucosides and carboxylic acid / alcohol ethoxylates having the following structures: a) HOCH2(CH2) n (CH2CH2O) x H or b) HOOC(CH2) m (CH2CH2O) y H; Where m and n are independently <18; and x and y are independently >1; preferably m and n are independently 6 to 18; and x and y are independently 1 to 30; c) HOOC(CH2) i -CH=CH-(CH2) k (CH2CH2O) z H; Where i and k are independently 5 to 15; and z is independently 5 to 50; preferably i and k are independently 6 to 12; and z is independently 15 to 35.

[0052] Nonionic surfactants may also include glycoamides, such as polysaccharide amides. Specifically, the surfactant may be one of the lactosamides described in U.S. Patent No. 5,389,279, entitled "Compositions Comprising Nonionic Glycolipid Surfactants," issued February 14, 1995, by Au et al.; or may be one of the glycoamides described in U.S. Patent No. 5,009,814, entitled "Use of N-Poly Hydroxyalkyl FattyAcid Amides as Thickening Agents for Liquid Aqueous Surfactant Systems," issued April 23, 1991, by Kelkenberg; or may be one of the glycoamides described in this application by introduction.

[0053] Preferably, the nonionic surfactant used for the purposes of this invention is, for example, an alkanolamide such as cocoamide MEADEA / MIPA, an ester produced by esterification of carboxylic acids with ethylene oxide, glycerol, sorbitan or other alcohols and esters, such as ethoxylated alcohols, ethoxylated lanolin, ethoxylated polysiloxanes, propoxylated POE ethers, and alkyl polyglycosides such as lauryl glucoside, decyl glucoside, and cocoyl glucoside. Preferably, the cleaning composition comprises 0.1 to 40% by weight of a nonionic surfactant, more preferably 0.5 to 38% by weight, further more preferably 1 to 35% by weight, and most preferably 2.5 to 30% by weight of a non-soap surfactant.

[0054] Suitable surfactants that can be used in the compositions disclosed herein may include one or more of sodium cocoyl hydroxyethyl sulfonate, sodium lauryl sulfate, disodium lauryl sulfosuccinate, lauryl glucoside, myristyl glucoside, decyl glucoside, sodium sulfate, sodium silicate, cocamidopropyl betaine, sodium cocoyl sulfate, and sodium dodecyl sulfate. In one embodiment, the surfactant may include sodium cocoyl hydroxyethyl sulfonate. In another embodiment, the surfactant may include disodium dodecyl sulfosuccinate. In a further embodiment, the surfactant may include a mixture of dodecyl glucoside, myristyl glucoside, sodium sulfate, sodium silicate, and sodium cocoyl sulfate. In yet another embodiment, the surfactant may include sodium lauryl sulfate. Suitable surfactants are not limited to those listed herein, but may include other surfactants that are in powder form and water-soluble prior to their incorporation into the composition to maximize the cleaning potential of the composition.

[0055] Most preferably, the compositions of the present invention comprise surfactants selected from anionic, nonionic, and amphoteric surfactants or mixtures thereof.

[0056] starch The cleaning composition of the present invention comprises starch in the range of 0.05 to 5% by weight, more preferably 0.5 to 4.8% by weight, and most preferably 1 to 4.5% by weight, based on the weight of the cleaning composition.

[0057] Starch (a polymer of glucose) is a polysaccharide used in plants to store polysaccharides, existing in both amylose and amylopectin forms. In animals, a structurally similar glucose polymer is a more densely branched glycogen, sometimes referred to as "animal starch."

[0058] In another aspect of the invention, the starch may be modified starch or natural starch. Most preferably, the starch is natural starch.

[0059] Suitable starch materials include natural starch (from corn, wheat, rice, potatoes, cassava, etc.), pregelatinized starch, various physically and chemically modified starches, and mixtures thereof. The term natural starch refers to starch that has not been chemically or physically modified—also known as native starch or natural starch.

[0060] Preferred starches are natural or native starches derived from corn, cassava, wheat, potato, rice, and other natural starch sources. Native starches with varying ratios of amylose and amylopectin are available, such as corn (25% amylose); waxy corn (0%); high amylose corn (70%); potato (23%); rice (16%); sago (27%); cassava (18%); wheat (30%); peas (35% amylose), etc. Native starches can be used directly or modified during the preparation of liquid personal care compositions to make the starch gelatinized.

[0061] Preferably, in the compositions of the present invention, the starch is pregelatinized, naturally ungelatinized, partially gelatinized, or partially hydrolyzed.

[0062] The preferred method is to use ungelatinized or pregelatinized starch. Further preferred is to use natural, unmodified starch.

[0063] Another suitable starch is pregelatinized starch, which is gelatinized before being added as a component of the liquid personal care composition of the present invention. Various forms of gelatinization at different temperatures are available, such as cold water-dispersible starch.

[0064] Preferably, the starch is in a suspended state in the liquid composition of the present invention; and most preferably, it is in a concentrated form in which it does not function as a thickener. More preferably, the starch is used in an ungelatinized form. It is known in the art that ungelatinized starch does not function as a thickener.

[0065] Preferably, the starch particle size (D50) ranges from 2 to 50 µm, more preferably 4 to 45 µm, and most preferably 5 to 35 µm. The particle shape can be smooth, elliptical, oblate, or polygonal, with a preference for smooth elliptical / spherical shapes. Most preferably, natural starch with a particle size range of 2 to 50 µm, more preferably 4 to 45 µm, and most preferably 5 to 35 µm is used. D50 is a particle size measure representing the diameter of 50% of the particles smaller than it and 50% of the particles larger than it in the particle size distribution. Particle size analysis is performed using a Malvern particle size analyzer.

[0066] electrolytes The cleaning compositions of the present invention may contain electrolytes. Electrolytes used for the purposes of the present invention may include inorganic salts (e.g., sodium chloride, potassium chloride) and organic salts (e.g., sodium citrate). In addition to the chlorides and citrates described above, other salts include phosphates, sulfates, and other halide salts. The counterions of such salts may be sodium or other monovalent cations, as well as divalent and trivalent cations.

[0067] The cleaning composition may optionally contain an electrolyte. When present, the electrolyte may range from 0.01 to 5% by weight of the liquid cleaning composition, more preferably from 0.1 to 4.5% by weight, and most preferably from 0.1 to 4.5% by weight. These weight percentage values ​​include cases where the electrolyte is used as a rheology modifier.

[0068] pH adjuster The compositions of the present invention preferably contain a pH adjuster. When a pH adjuster is present in the compositions of the present invention, it is present in a range of 0.01 to 1% by weight, preferably 0.05 to 0.8% by weight, more preferably 0.08 to 0.7% by weight, and most preferably 0.09 to 0.6% by weight of the composition of the present invention.

[0069] pH adjusters are components responsible for adjusting the existing pH value of a composition.

[0070] Select a pH adjuster to maintain the pH of the composition in the range of 4 to 7, more preferably 4.5 to 7, and most preferably 4.5 to 5.7.

[0071] The pH adjuster of the present invention can be an acid or a salt. Preferably, the pH adjuster is an acid, such as acetic acid, citric acid, lactic acid, gluconic acid, glycolic acid, malic acid, mandelic acid, tartaric acid, or amino acids.

[0072] When the pH adjuster is a salt, it can be sodium bicarbonate, potassium carbonate, calcium hydroxide, potassium hydroxide, sodium carbonate, potassium bicarbonate, sodium hydroxide, or a combination thereof. In various embodiments, the pH adjuster is sodium bicarbonate.

[0073] Chelating agents The cleaning composition of the present invention contains a chelating agent. Preferably, the chelating agent in the cleaning composition is present in the range of 0.01 to 3% by weight of the cleaning composition, more preferably in the range of 0.02 to 2.5% by weight of the cleaning composition, and most preferably in the range of 0.05 to 1.5% by weight of the cleaning composition.

[0074] Preferably, the chelating agent in the cleaning composition is present at a weight of at least 0.01% by weight, more preferably at least 0.02% by weight, and most preferably at least 0.05% by weight.

[0075] Preferably, the chelating agent in the cleaning composition is present at a concentration of up to 3% by weight of the cleaning composition, more preferably up to 2.5% by weight, even more preferably up to 2% by weight, and most preferably up to 1.5% by weight.

[0076] Preferred chelating agents are as follows (the abbreviations are in parentheses after the names): Ethylenediaminetetraacetic acid (EDTA), disodium ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid (DTPA), ethane-1-hydroxy-1,1-diphosphonic acid (EHDP), ethylenediamine-N,N′-disuccinic acid (EDDS), nitrotriacetic acid (NTA), sodium iminodisuccinate (IDS), ethylene glycol-bis-(2-aminoethyl)-N,N,N′,N′-tetraacetic acid (EGTA), methylglycine diacetic acid (MGDA), N-(2-hydroxyethyl)ethylenediamine-N,N′,N′-triacetic acid (HEDTA) Ethylenediaminetetramethylenephosphonic acid (EDTMP), diethylenetriaminepentamethylenephosphonic acid (DTPMP), glutamic acid-N,N-diacetic acid (GLDA), cyclohexane-1,2-diamine-N,N′,N′,N'-tetraacetic acid (CDTA), 1,3-propanediaminetetraacetic acid (PDTA), ethylenediaminetriacetic acid (EDTA), L-hydroxyiminodisuccinic acid (L-IDS), trisodium N-carboxyethyliminosuccinate (CEIS), citric acid, sodium tripolyphosphate (STP), and triethylenetetraminehexaacetic acid (TTHA). Other preferred chelating agents are trisodium ethylenediaminedisuccinate, tetrasodium iminodisuccinate, tetrasodium glutamic acid-N,N-diacetic acid, sodium 2-hydroxyethyliminodisuccinate (disodium ethanol diglycine), tetrasodium 3-hydroxy-2,2-iminodisuccinate, trisodium methylglycine diacetate, and tetrasodium L-aspartic acid-N,N-diacetic acid. More preferred chelating agents are salts of ethylenediaminetetraacetic acid (EDTA) and diethylenetriaminepentaacetic acid (DTPA). Preferred EDTA salts are disodium ethylenediaminetetraacetic acid and tetrasodium ethylenediaminetetraacetic acid. Preferred DTPA salts are pentasodium diethylenetriaminepentaacetic acid.

[0077] Most preferably, the chelating agent suitable for the compositions of the present invention is selected from ethylenediaminetetraacetic acid (EDTA), or diethylenetriaminepentaacetic acid (DTPA), its derivatives and combinations thereof, and mixtures thereof. EDTA derivatives are selected from tetrasodium EDTA, trisodium EDTA, disodium EDTA, and combinations thereof. DTPA derivatives are selected from tetrasodium DTPA, trisodium DTPA, disodium DTPA, and combinations thereof.

[0078] preservative The cleaning composition of the present invention comprises a preservative. Preferably, the preservative in the cleaning composition is present in the range of 0.01 to 3% by weight of the cleaning composition, more preferably in the range of 0.02 to 2% by weight of the cleaning composition, and most preferably in the range of 0.05 to 1% by weight of the cleaning composition.

[0079] Examples of very useful preservatives suitable for the compositions of the present invention include, but are not limited to, chlorite components, benzoic acid components, sorbic acid components, and mixtures thereof.

[0080] Other preferred preservatives include, but are not limited to, those commonly used in cosmetics, such as dibromo-2-bromomethylglutaronitrile (2-bromo-2-bromomethylglutaronitrile), phenoxyethanol, 3-iodo-2-propynyl butylcarbamate, 2-bromo-2-nitro-propane-1,3-diol, imidazolidinyl urea, 5-chloro-2-methyl-4-isothiazolin-3-one, 2-chloroacetamide, benzalkonium chloride, sodium benzoate, and benzyl alcohol.

[0081] According to the present invention, sodium benzoate, sodium salicylate, methyldibromoglutaronitrile, phenoxyethanol, and combinations thereof are particularly preferred as preservatives.

[0082] water The cleaning composition of the present invention comprises 5 to 80% by weight, more preferably 10 to 75% by weight, and most preferably 15 to 70% by weight, of water based on the weight of the composition. The composition of the present invention is primarily an aqueous composition.

[0083] pH Preferably, the pH value of the composition of the present invention is in the range of 4 to 7, more preferably 4.5 to 6.9.

[0084] The pH of a solution can be expressed as the negative logarithm of hydrogen ion activity, which is related to the millivolt potential of the pH indicator electrode. This electrode is calibrated using a standard buffer mixture whose pH value falls on either side of the pH of the solution being measured (acidic or alkaline). Approximately 1 gram of the cleaning composition is weighed into a beaker, and brought to 100 grams by adding distilled water at 25°C, and the pH value is measured.

[0085] rheology modifiers The compositions of the present invention contain rheology modifiers, which are agents that affect the rheological properties of liquid cleaning compositions. These agents may be thickeners of polymers, suspending polymers, and may include electrolyte salts that can modify the rheological properties of liquid cleaning compositions. Based on the weight of the cleaning composition of the present invention, the compositions of the present invention may contain 0.05 to 5% by weight, more preferably 0.1 to 4.8% by weight, and most preferably 1 to 4.5% by weight of rheology modifiers.

[0086] Preferably, the rheology modifier is selected from thickening polymers, suspension polymers, electrolyte salts, and combinations thereof.

[0087] Thickeners can be water-soluble / water-dispersible / suspension polymers. These polymers can be cationic, anionic, amphoteric, or nonionic, and have a molecular weight greater than 100,000 Daltons. They are known to improve the viscosity and stability of liquid detergent compositions, enhance the sensory feel on and off the skin, and improve the creaminess and stability of foam. When present, the amount of the polymer can range from 0.01 to 10% by weight of the composition. Preferably, the thickening polymer is present in the range of 0.05 to 5% by weight of the cleaning composition of the present invention, more preferably 0.1 to 4.8% by weight, and most preferably 0.5 to 4.5% by weight.

[0088] Examples of water-soluble / or water-dispersible polymers and rheology modifiers include gums such as cellulose gum, microcrystalline cellulose, cellulose gel, hydroxyethyl cellulose, hydroxypropyl cellulose, sodium carboxymethyl cellulose, methyl cellulose, ethyl cellulose, guar gum, gum arabic, gum arabic, gum acacia, agar gum, xanthan gum, and mixtures thereof; alkali-swellable acrylic polymers such as cross-linked acrylate copolymers, polyacrylate cross-linked polymers; polyacrylate cross-linked polymers (Sepimax zen), lightly cross-linked acrylate copolymers (Carbopol Aqa SF01), hydroxypropyl methyl cellulose (and) cellulose gum (and) xanthan gum (TEXTURE PURE SA), Amaze XT (dehydroxanthan gum); emulsion polymers such as Aculyn® 28; cationic polymers such as modified polysaccharides, including cationic guar gum such as Jaguar® C13S, Jaguar® C17, or Jaguar® C16; and cationic modified cellulose such as UCARE® Polymer JR 30 or JR. 40; N-Hance® 3000, N-Hance® 3196, N-Hance® GPX 215, or N-Hance® GPX 196 from Hercules; synthetic cationic polymers such as Merquat® 100, Merquat® 280, Merquat® 281, and Merquat® 550 sold by Nalco; cationic galactomannans such as the Galactasol® 800 series from Henkel, Inc.; Quadrosoft® LM-200; and Polyquaternium-24®. High molecular weight polyethylene glycols such as Polyox® WSR-205 (PEG 14M), Polyox® WSR-N-60K (PEG 45), and Polyox® WSR-301 (PEG 90M) are also suitable. Other cationic cellulose derivatives are cationic guar gum derivatives.

[0089] For the purposes of this invention, the rheology modifier is different from starch.

[0090] acrylic polymers The compositions of the present invention contain acrylic / acrylate polymers as thickeners / suspending polymers or rheology modifiers. Preferably, the rheology modifier in the compositions of the present invention is a thickening polymer. Most preferably, the rheology modifier is an acrylic polymer.

[0091] The polymer can be a hydrophobically modified homopolymer, copolymer, or crosslinked polymer, and can be an acrylic polymer, a partially neutralized acrylic polymer, or an acrylic polymer. Commercially available polymers in these categories that can be used include Carbopol Aqua SF polymer from Lubrizol, Carbopol SC-200 polymer also from Lubrizol, or Acusol 445 G-polymer from Dow.

[0092] Suitable reagents include acrylate-containing homopolymers and copolymers, such as cross-linked polyacrylates sold under the trade name CARBOPOL, hydrophobically modified cross-linked polyacrylates sold under the trade names AQUA and PEMULEN (both sold by Lubrizol Company, Wickliffe, Ohio), alkali-swellable acrylic latex polymers sold by Rohm and Haas (Philadelphia, Pa.) under the trade names ACUSOL or ACULYN, and Synthalen 400 (available from 3V Company in Hackensack, NJ).

[0093] The acrylic polymer is contained in 0.01 to 5% by weight of the clean composition, preferably 0.1 to 4.8%, more preferably 0.5 to 4.5%.

[0094] The electrolytes mentioned above can be used as rheology modifiers.

[0095] soap The liquid cleaning composition of the present invention may contain about 0.1 to 10% by weight of soap, more preferably 0.5 to 9% by weight, and most preferably about 1 to 8% by weight, based on the weight of the cleaning composition. Preferably, the cleaning composition has 1.5 to 7% by weight of total fatty substances (TFM).

[0096] The term "soap" refers to a salt of fatty acids, wherein the accompanying cation can be an alkali metal, alkaline earth metal, or ammonium ion, preferably an alkali metal. Preferably, the cation is sodium or potassium. Soap can be saturated or unsaturated, depending on the nature of the corresponding fatty acid and / or oil used for saponification.

[0097] Moisturizer "Emollients" are defined as substances that soften or improve the elasticity, appearance, and youthfulness of the skin by increasing its water content, adding or replacing lipids and other skin nutrients, or both, and by maintaining its softness by slowing down the decrease of its water content.

[0098] Moisturizers (which are also humectants, such as polyhydroxy alcohols, for example, glycerol and propylene glycol; and polyols, such as polyethylene glycol, such as Polyox WSR N-60K (PEG-45M)) are used in preferred embodiments of the invention. The moisturizer is preferably used in amounts of at least 0.5% by weight, 2.5% by weight, or 5% by weight, and at most 15% by weight, 20% by weight, or 25% by weight.

[0099] Hydrophobic emollients are used in preferred embodiments of the invention. Preferably, they are hydrophobic emollients having a weight-average particle size of less than 1000 or 500 micrometers in diameter, and are defined herein as “finely dispersed oils.” These emollients are preferably used in amounts of a minimum of 0.5 wt%, 2.5 wt%, or 5 wt%, and a maximum of 15 wt%, 20 wt%, or 25 wt%.

[0100] Suitable hydrophobic emollients include, but are not limited to, the following: (a) Silicone oils and their modifiers, such as linear and cyclic polydimethylsiloxanes; amino, alkyl, alkylaryl and aryl silicone oils; (b) Fats and oils, including natural fats and oils (triglycerides), such as jojoba oil, soybean oil, sunflower oil, rice bran oil, avocado oil, almond oil, olive oil, sesame oil, peach kernel oil, castor oil, coconut oil and mink oil; moringa oil; cocoa butter; beef tallow, lard; hardened oils obtained by hydrogenation of the above oils; and synthetic monoglycerides, diglycerides and triglycerides, such as glyceryl myristate and glyceryl 2-ethylhexanoate; (c) Waxes, such as carnauba wax, cetacean wax, beeswax, lanolin and their derivatives; (d) Hydrophobic plant extracts; (e) Hydrocarbons, such as petrolatum, polybutene, liquid paraffin, microcrystalline wax, ceresin, squalene, pristan and mineral oil; (f) Higher alcohols, such as lauryl alcohol, cetyl alcohol, stearyl alcohol, oleyl alcohol, behenyl alcohol, cholesterol and 2-hexyldecyl alcohol; (g) Esters, such as cetyl caprylate, myristyl lactate, cetyl lactate, isopropyl myristate, myristyl myristate, isopropyl palmitate, isopropyl adipate, butyl stearate, decyl oleate, cholesterol isostearate, glyceryl monostearate, glyceryl distearate, glyceryl tristearate, alkyl lactate, alkyl citrate, and alkyl tartrate; (h) Essential oils and their extracts, such as peppermint, jasmine, camphor, white cedarwood, bitter orange peel, ryu, turpentine, cinnamon, bergamot, Satsuma mandarin, calamus, pine, lavender, bay leaf, clove, cypress, eucalyptus, lemon, starflower, thyme, peppermint, rose, sage, sesame, ginger, basil, juniper, lemongrass, rosemary, rosewood, avocado, grape, grape seed, myrrh, cucumber, watercress, calendula, elderflower, geranium, linden flower, amaranth, seaweed, ginkgo, ginseng, carrot, guarana, tea tree, jojoba, comfrey, oats, cocoa, orange blossom, vanilla, green tea, pennywort. royal), aloe vera, menthol, eucalyptol, eugenol, citral, citronellol, borneol, linalool, geraniol, evening primrose, camphor, thymol, spirostol, pentene, limonene, and terpene oils; (i) Mixtures of any of the above components, etc.

[0101] Beneficial agents In addition to the ingredients described above, preferred embodiments of the cleaning composition may include other optional and preferred ingredients due to their known benefits. The type and amount depend largely on the nature and type of the cleaning composition and general principles of compositional science.

[0102] Other optional compositions may contain one or more skin-beneficial agents. The term "skin-beneficial agent" is defined as a substance that softens or improves the elasticity, appearance, and youthful appearance of the skin (stratum corneum) by increasing its water content, adding or replacing lipids and other skin nutrients, or both; and by maintaining its softness by slowing the decrease in its water content. Suitable skin-beneficial agents include emollients, including, for example, hydrophobic emollients, hydrophilic emollients, or blends thereof. Water-soluble skin-beneficial agents may optionally be formulated into the liquid compositions of the present invention. Various water-soluble skin-beneficial agents may be used, and the level may be 0 to 50% by weight of the composition, but preferably 1 to 30% by weight. These materials include, but are not limited to, polyhydroxy alcohols. Preferred water-soluble skin-beneficial agents are glycerol, sorbitol, and polyethylene glycol.

[0103] Water-insoluble skin-beneficial agents can also be formulated into compositions as conditioning and moisturizing agents. Examples include silicone oils; hydrocarbons such as liquid paraffin, petrolatum, microcrystalline wax, and mineral oils; and vegetable triglycerides such as sunflower seed oil and cottonseed oil.

[0104] Preservatives may also be added to the composition to prevent the growth of potentially harmful microorganisms. Suitable conventional preservatives for use in the compositions of the present invention are alkyl esters of hydrobenzoic acid. Other preservatives that have recently come into use include caprolactone derivatives, propionates, and various quaternary ammonium compounds. Particularly preferred preservatives are phenoxyethanol, methylparaben, propylparaben, imidazolidinyl urea, sodium dehydroacetate, and benzyl alcohol. The selection of preservatives should take into account the intended use of the composition and possible incompatibilities between the preservative and other components. Preservatives are preferably used in amounts ranging from 0.01% to 2% by weight of the composition.

[0105] A variety of other optional materials can be formulated into the composition. These may include: antimicrobial agents; scrubs and exfoliating particles, such as polyethylene with silica or alumina; cooling agents, such as menthol; skin soothing agents, such as aloe vera; and colorants.

[0106] Shower gels or washes may contain particles with an average diameter of approximately 50 μm, which help remove dry skin. Without being bound by theory, the degree of exfoliation depends on the size and morphology of the particles. Large, coarse particles are often very harsh and irritating. Very small particles may not be effective exfoliants. Such exfoliants used in the art include natural minerals such as silica, talc, calcite, pumice, tricalcium phosphate; seeds such as rice, apricot kernels, etc.; ground shells such as almond and walnut shells; oats; polymers such as polyethylene glycol and polypropylene glycol beads; petals and leaves; microcrystalline wax beads; jojoba ester beads, etc. These exfoliants exhibit a wide variety of particle sizes and morphologies, ranging from micrometers to millimeters. They also have a range of hardness. Some examples are talc, calcite, pumice, walnut shells, dolomite, and polyethylene.

[0107] Advantageously, active agents other than skin conditioning agents as defined above may also be incorporated into the composition. These active ingredients may advantageously include antibacterial agents, vitamins, anti-acne active substances; anti-wrinkle, anti-skin aging and skin repair active substances; skin barrier repair active substances; non-steroidal cosmetic soothing active substances; artificial tanning agents and accelerators; skin brightening active substances; sunscreen active substances; sebum stimulants; sebum inhibitors; antioxidants; protease inhibitors; skin firming agents; antipruritic ingredients; hair growth inhibitors; 5-α reductase inhibitors; desquamating enzyme enhancers; anti-glycation agents; or mixtures thereof; etc.

[0108] These active agents may be selected from water-soluble active agents, oil-soluble active agents, pharmaceutically acceptable salts, and mixtures thereof. As used herein, the term "active agent" means a personal care active substance that may be used to deliver benefits to the skin and / or hair, and is generally not used to provide skin conditioning benefits delivered via emollients as defined above. As used herein, the term "safe and effective amount" means an amount of active agent that is high enough to alter the condition being treated or to deliver the desired skin care benefit, but low enough to avoid serious side effects. As used herein, the term "benefit" means a therapeutic, preventative, and / or long-term benefit associated with the treatment of a particular condition using one or more of the active agents described herein. The safe and effective amount of an active agent will vary depending on the specific active agent, the ability of the active substance to penetrate the skin, the user's age, health status, skin condition, and other similar factors.

[0109] A wide variety of active ingredients can be used in the compositions of the present invention, including those selected from anti-acne active substances, anti-wrinkle and anti-skin aging active substances, skin barrier repair aids, cosmetic soothing aids, local anesthetics, artificial tanning agents and accelerators, skin brightening active substances, antimicrobial and antifungal active substances, sunscreen active substances, sebum stimulants, sebum inhibitors, anti-glycation active substances, and mixtures thereof.

[0110] Anti-acne active ingredients can effectively treat acne vulgaris, a chronic condition of sebaceous gland follicles. Non-limiting examples of useful anti-acne active substances include keratolytic agents such as salicylic acid (o-hydroxybenzoic acid), derivatives of salicylic acid such as 5-octanoyl salicylic acid and 4-methoxysalicylic acid, and resorcinol; retinoids such as retinoic acid and its derivatives (e.g., cis and trans); sulfur-containing D and L amino acids and their derivatives and salts, especially their N-acetyl derivatives, mixtures thereof, etc.

[0111] Skin barrier repair active substances are skin care active ingredients that help repair and replenish the natural moisture barrier function of the epidermis. Non-limiting examples of skin barrier repair active substances include lipids such as cholesterol, ceramides, sucrose esters and pseudoceramides, as described in European Patent Specification No. 556957; ascorbic acid; biotin; biotin esters; phospholipids, mixtures thereof, etc.

[0112] Artificial tanning agents can help mimic natural tanning by increasing melanin in the skin or by creating the appearance of increased melanin production. Non-limiting examples of artificial tanning agents and accelerators include dihydroxyacetone; tyrosine; tyrosine esters such as ethyl tyrosine ester and glucosyl tyrosine ester; mixtures thereof, etc.

[0113] Skin-brightening active ingredients can actually reduce the amount of melanin in the skin, or provide this effect through other mechanisms. Non-limiting examples of skin-brightening active ingredients used herein include aloe vera extract, α-glycero-L-ascorbic acid, aminotyrosine, ammonium lactate, glycolic acid, hydroquinone, 4-hydroxyanisole, 4-alkylresorcinol, including ER, BR, HR, phenylethylresorcinol; peptide omega; mixtures thereof, etc.

[0114] Vitamin C and its oil-soluble and water-soluble derivatives; vitamin E and its oil-soluble and water-soluble derivatives; vitamin B3, B vitamins, hydroxy fatty acids, including 12-hydroxystearic acid, 10-hydroxystearic acid, and 10-hydroxypalmitic acid; and mixtures thereof.

[0115] Sunscreen active ingredients are also useful. Non-limiting examples of sunscreen agents useful in the compositions of the present invention are those selected from octyl methoxycinnamate (Parsol MCX) and butyl methoxybenzoylmethane (Parsol 1789), 2-ethylhexyl p-methoxycinnamate, 2-ethylhexyl N,N-dimethyl-p-aminobenzoate, p-aminobenzoic acid, 2-phenylbenzimidazole-5-sulfonic acid, oxybenzone, mixtures thereof, etc.

[0116] Protease inhibitors are also useful. Protease inhibitors can be divided into two main categories: proteases and peptidases. Proteases act on specific internal peptide bonds of proteins, while peptidases act on peptide bonds adjacent to the free amino or carboxyl groups at the ends of proteins and thus cleave proteins from the outside. Protease inhibitors suitable for the personal toilet soap bar compositions of the present invention include, but are not limited to, proteases such as serine proteases, metalloproteinases, cysteine ​​proteases, and aspartic proteases, and peptidases such as carboxypeptidases, dipeptidases, and aminopeptidases, and mixtures thereof.

[0117] Other useful active ingredients are skin-tightening agents. Non-limiting examples of skin-tightening agents that can be used in the compositions of the present invention include monomers that can bind polymers to the skin, such as (meth)acrylic acid and hydrophobic monomers consisting of long-chain alkyl (meth)acrylates, mixtures thereof, etc.

[0118] The active ingredients in the personal toilet soap bar composition of the present invention may also include an antipruritic ingredient. Suitable examples of antipruritic ingredients that can be used in the compositions of the present invention include hydrocortisone, methdilizine, and trimeprazine, mixtures thereof, etc.

[0119] Non-limiting examples of hair growth inhibitors that can be used in the personal toilet soap bar compositions of the present invention include 17-β-estradiol, anti-angiogenic steroids, turmeric extract, cyclooxygenase inhibitors, evening primrose oil, linoleic acid, etc. Suitable 5-α-reductase inhibitors, such as ethinylestradiol, genistine, and mixtures thereof.

[0120] Advantageously, the cationic skin-sensing agent or polymer is used in amounts of about 0.01 wt%, 0.1 wt%, or 0.2 wt% to about 1 wt%, 1.5 wt%, or 2.0 wt%.

[0121] Cationic cellulose can be polymerized in the Polymer JR® and LR® series from Amerchol Corp. (Edison, NJ, USA), such as salts of hydroxyethyl cellulose reacted with trimethylammonium-substituted epoxides, known industrially (CTFA) as Polyquaternium® 10. Another type of cationic cellulose includes polymerized quaternary ammonium salts of hydroxyethyl cellulose reacted with lauryl dimethylammonium-substituted epoxides, known industrially (CTFA) as Polyquaternium® 24. These materials are also available from Amerchol Corp. (Edison, NJ, USA) under the trade name Polymer LM-200®, as well as quaternary ammonium compounds such as alkyl dimethyl ammonium halides.

[0122] Particularly suitable types of cationic polysaccharide polymers that can be used are cationic guar gum derivatives, such as guar hydroxypropyltrimethylammonium chloride (commercially available from Rhone-Poulenc under the JAGUAR® brand). Examples include JAGUAR® C13S, which has a low degree of cationic substitution and high viscosity; JAGUAR® C15, which has a moderate degree of substitution and low viscosity; JAGUAR® C17 (high degree of substitution, high viscosity); JAGUAR® C16, which is a hydroxypropylated cationic guar gum derivative containing low levels of substituent groups and cationic quaternary ammonium groups; and JAGUAR® 162, which is a high-transparency, medium-viscosity guar gum with a low degree of substitution.

[0123] Particularly preferred cationic polymers are JAGUAR® C13S, JAGUAR® C15, JAGUAR® C17, JAGUAR® C16, and JAGUAR® C162, especially JAGUAR® C13S. Other cationic skin-sensing agents known in the art may be used, provided they are compatible with the compositions of the present invention.

[0124] Other preferred cationic compounds that can be used in this invention include amide quaternary ammonium compounds, such as quaternary ammonium propionates and lactates, as well as quaternary ammonium hydrolysates of silk or wheat proteins. Many of these compounds are available from McIntyre Group Ltd. (University Park, Ill.) as Mackine® aminofunctional amines, Mackalene® aminofunctional tertiary amine salts, and Mackpro® cationic protein hydrolysates.

[0125] In embodiments containing a hydrolyzed protein conditioner, the average molecular weight of the hydrolyzed protein is preferably about 2500. Preferably, 90% of the hydrolyzed protein has a molecular weight between about 1500 and about 3500. In a preferred embodiment, MACKPRO® WWP (i.e., wheat germ dimethylamine hydrolyzed wheat protein) is added to the strip at a concentration of 0.1% (as is).

[0126] use The present invention provides the use of acrylic polymers and starch in a liquid cleaning composition according to the first aspect for providing a moisturizing effect.

[0127] The present invention provides the use of starch and acrylic polymers in a cleaning composition according to the first aspect for providing better foam stability compared to a starch-free cleaning composition, wherein at least 80% by weight of the starch particles are in a round or oval morphology.

[0128] The present invention provides the use of starch and acrylic polymers in a cleaning composition according to the first aspect for providing moisturizing compared to a starch-free cleaning composition, wherein at least 80% by weight of the starch particles are in a round or oval morphology.

[0129] This invention provides the use of 0.05 to 5% by weight of starch based on the obtained cleaning composition in a cleaning composition comprising the following components to provide better foam stability compared to the cleaning composition without starch: i. 0.1 to 40% by weight of non-soap surfactants; ii. 0.05 to 2.5% by weight of rheology modifier; iii. 5 to 80% by weight of water; At least 80% by weight of the starch granules are round or oval in shape.

[0130] This invention provides the use of 0.05 to 5% by weight of starch based on the obtained cleaning composition in a cleaning composition comprising the following components for providing moisturizing compared to a starch-free cleaning composition: i. 0.1 to 40% by weight of non-soap surfactants; ii. 0.05 to 2.5% by weight of rheology modifier; iii. 5 to 80% by weight of water; At least 80% by weight of the starch granules are round or oval in shape.

[0131] The present invention provides the use of starch and acrylic polymers in a cleaning composition according to the first aspect for providing skin clarity and / or shine compared to a starch-free cleaning composition, wherein at least 80% by weight of the starch particles are in a round or oval morphology.

[0132] This invention provides the use of 0.05 to 5% by weight of starch based on the obtained cleansing composition in a cleansing composition comprising the following components to provide skin clarity and / or shine compared to a cleansing composition without starch: i. 0.1 to 40% by weight of non-soap surfactants; ii. 0.05 to 2.5% by weight of rheology modifier; iii. 5 to 80% by weight of water; At least 80% by weight of the starch granules are round or oval in shape.

[0133] method The cleaning composition of the present invention is prepared using a process comprising the following steps: i. Add the surfactant to water to form an aqueous surfactant solution; ii. Dispersing the rheology modifier / suspension polymer in an aqueous surfactant solution, followed by neutralization; and iii. Add starch slurry while stirring to obtain the liquid cleaning composition of the present invention.

[0134] The viscosity of the final cleaning composition can be adjusted by adding rheology modifiers such as electrolytes, suspension polymers, or thickening polymers.

[0135] While the invention has been described with reference to specific embodiments thereof, it will be apparent to those skilled in the art that many other forms and modifications of the invention will be readily apparent. The appended claims and the invention itself should generally be construed as covering all such obvious forms and modifications that fall within the true spirit and scope of the invention.

[0136] Example The invention will now be illustrated by means of embodiments. These embodiments are for illustrative purposes only and do not limit the scope of the claims in any way.

[0137] Example 1 Preparation of the composition The compositions used in the comparative studies were prepared by dissolving a chelating agent in an aqueous medium. An acrylic polymer was then dispersed in water, followed by neutralization, and then a surfactant such as PAS / CMEA was added at approximately 70 to 80°C until dissolved under stirring. A surfactant such as SLES / CAPB / decyl glucoside / cocamide monoethanolamine was then further added at a temperature below 60°C. Preservatives, colorants, fragrances, and other skin-beneficial additives were added. Starch, pre-dispersed in a glycerol slurry, was added under rapid stirring, and the final viscosity was adjusted with an electrolyte.

[0138] The potato starch was purchased from AGRANA STÄRKE - STÄRKINA NATURAL, and is 100% natural potato starch, originating in the EU, typically from Austria and the Czech Republic. The corn starch was purchased from AGRANA STÄRKE - MAISITA 9040 - 100% natural corn starch, originating in the EU, typically from Austria, Slovakia, and Hungary. The rice starch was purchased from AGRANA STÄRKE - REISITA NATURAL - 100% natural rice starch.

[0139] Compositions P0 to P9 were prepared according to the above-described process, with variations of one or more components as shown in Table 1. P0 to P2 served as control compositions containing no starch but with different concentrations of non-soap surfactants. Composition P3 contained potato-derived starch with a round / elliptical morphology but did not contain acrylic polymers as rheology modifiers / suspending agents. P4 and P5 contained both starch and acrylic polymers, but with different starch morphologies, being polygonal from rice and corn, respectively. P6 had a polygonal morphology, wherein the starch was hydrophobically modified corn starch. Compositions P7 to P9 were prepared according to the first aspect of the invention and are within the scope of the invention. P7 and P8 differed in starch concentration but maintained the same starch source, i.e., the starch granules were round / elliptical from potato, while P9's starch source was barley, and it also had the same round / elliptical starch granule morphology.

[0140] Dynamic Foam Analysis: The foaming capacity of liquids was measured using a DFA-100 dynamic foam analyzer. Foam was generated by air purging from the bottom, while a high-resolution camera recorded video of foam generation. A prism was fixed to a cylinder, which helped identify the foam edges. Data was recorded as video and analyzed using software. Measurement parameters were: Sample concentration: 6.25% solution; Sample volume for foam measurement: 50 ml; Column type: CY4572 - 40 mm prism; Illumination: Infrared - λ = 850 nm; Foaming method: Stirrer SR4501; Stirring speed: 4000 rpm. The discharge half-life (measured in seconds) is the time it takes for the FLS (Foam Liquid Stability) to decrease to 50% of its initial value. The higher this value, the better the foam stability. Discharge half-life (t... FLS 50% This indicates the time required for 50% of the liquid to drain from the foam structure. Therefore, when t FLS 50% At higher values, the foam system exhibits better stability, indicating that the foam can retain more liquid within the sheet-like membrane and minimize liquid leakage from the foam. The microstructure of starch was determined using scanning electron microscopy. Particle size was measured from high-resolution images of starch morphology.

[0141] Table 1:

[0142] As can be clearly seen from the data in Table 1, the liquid discharge half-life of compositions P7 to P9 of the present invention has 15% or more foam stability compared to compositions P0 to P3, and the liquid discharge half-life of P4 to P6, in which the starch granules are not round or elliptical, is nearly 4% higher than that of P0 to P3, in which the starch granules are not round or elliptical.

[0143] Example 2 Home Use Test (HUT) Study: Blind Monadic HUT was conducted with the product placed for 7 days, followed by telephone interviews. In the home, the blind product test was conducted in an opaque white bottle, and the subjects were women aged 18-45 (18-30 years: 40%, 31-45 years: 60%) who were users of shower gel and used the shower gel at least 4 times a week.

[0144] The control composition P0 was compared with the composition P3, which does not contain acrylic polymers, and the composition P7 of the present invention. Composition P3 was unstable and precipitated, and therefore could not be tested for human use. Table 2 provides the average scores of the benefit parameters based on total score, gentleness, and moisturizing benefits on a scale of 1 to 7 (range - 1 to 7 - excellent).

[0145] Table 2

[0146] As can be seen from the data in Table 2, based on the benefit parameters, P7, which contains a combination of potato-derived natural starch in round / oval granular form with a polymer according to the first aspect of the present invention, is superior to the control P0 in all given parameters 1 to 3 (with significant improvement at 90% or 95% confidence level in the two-tailed T test). P3, which contains potato-derived natural starch in round / oval granular form but does not contain a polymer, experienced sedimentation and is not suitable for human use testing.

[0147] Example 3 A panel of 14 trained members evaluated the liquid products to gain expert insights. Each product was fully randomized and evaluated twice by the panel members. The study was conducted in a controlled setting following a liquid sensory evaluation protocol, where all evaluations were performed using soft water at 4.5°FH ± 0.5°FH and a water temperature of 30 ± 2°C. Data were subsequently analyzed using Senpaq (QDA) software with QDA ANOVA + TukeyKramer HSD significance level (QDA).

[0148] Table 3

[0149] The data in Table 3 show that, compared with the starch-free control composition P0, composition P7 of the first aspect received positive feedback from the panel members on parameters such as quick rinsing, a silkier feel after 5 minutes of use, and faster and more creamy foaming.

[0150] Example 4: Clinical research methods and protocols: Gloss and translucency - Comprehensive gloss scale Gloss and translucency were assessed using methods described 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 evaluated by dermatologists. This included panel members at Fitzpatrick scale 3–6 who, according to dermatologists, had dark spots caused by PIH. Panel members were given a wash-out period to allow for adaptation, and the study duration was extended from a minimum of 2 weeks to a maximum of 6 weeks, with clinical assessments conducted at weeks 1, 2, and 4 after regular product use. The dermatologists used in this study were trained and had validated evaluation skills. The MSCR single-parameter gloss measure measured skin gloss and translucency, with a scoring range of 0–9, where 0 represented dullness, and 1–3, 4–6, and 7–9 represented mild, moderate, glossy, and translucent skin, respectively.

[0151] Skin Transparency - Report: Subjects assessed were instructed to wash their face and forearms with water and acclimatize at the test center. After acclimatization, subjects were assessed by a trained dermatologist using a skin transparency scale based on reflectance / luminosity assessment. Skin transparency is rated from 1 to 5, where lower values ​​indicate opaque skin and higher values ​​indicate transparent skin. Skin transparency is a result of phenotypic changes, which are mostly marginal and difficult to detect. A statistically significant improvement in skin transparency score observed after product use is an indication of improved skin transparency.

[0152] Table 2

[0153] Compositions P1 and P7 were compared using dermatological assessment and image analysis to determine the change in mean CFB- value relative to baseline, with appropriate statistical tools used to analyze gloss and translucency and skin clarity. It was observed that, at 95% confidence limits, the increase in the corresponding parameter values ​​for P7 was statistically significant compared to P1.

Claims

1. A cleaning composition comprising i. 0.1 to 40% by weight of non-soap surfactants; ii. 0.05 to 2.5% by weight of rheology modifier; iii. 0.05 to 5% by weight of starch; and iv. 5 to 80% by weight of water; At least 80% by weight of the starch granules are round or oval in shape.

2. The composition according to claim 1, wherein the starch is natural starch.

3. The composition according to claim 1 or 2, wherein the starch is pregelatinized, naturally ungelatinized, partially gelatinized, or partially hydrolyzed.

4. The composition according to any one of claims 1 to 3, wherein the starch has a particle size in the range of 2 to 50 µm.

5. The composition according to any one of claims 1 to 4, wherein the rheology modifier is selected from thickening polymers, suspension polymers, electrolyte salts, and combinations thereof.

6. The composition of claim 5, wherein the polymer comprises an acrylic polymer.

7. The composition according to any one of claims 1 to 6, wherein the non-soap surfactant is selected from anionic surfactants, amphoteric surfactants, amphoteric surfactants, nonionic surfactants, and mixtures thereof.

8. The composition according to any one of claims 1 to 7, wherein the composition comprises 0.1 to 3% by weight of a chelating agent.

9. The composition according to claim 8, wherein the chelating agent is selected from ethylenediaminetetraacetic acid (EDTA), or diethylenetriaminepentaacetic acid (DTPA), sodium gluconate, sodium citrate, and mixtures thereof.

10. The composition according to any one of claims 1 to 9, wherein the composition comprises a preservative in the range of 0.1 to 5% by weight of the composition.

11. The composition according to claim 10, wherein the preservative is selected from sodium benzoate, benzoic acid, potassium sorbate, methylparaben, ethylparaben, propylparaben, butylparaben, and heptylparaben, combinations or mixtures thereof.

12. The use of 0.05 to 5% by weight of starch in the resulting cleaning composition to provide better foam stability compared to a starch-free composition, said cleaning composition comprising: i. 0.1 to 40% by weight of non-soap surfactants; ii. 0.05 to 2.5% by weight of rheology modifier; iii. 5 to 80% by weight of water; The starch in the cleaning composition, at least 80% by weight, has a granular morphology of round or oval.

13. Use of 0.05 to 5% by weight of starch in the resulting cleaning composition for providing moisturizing compared to a starch-free composition, said cleaning composition comprising: i. 0.1 to 40% by weight of non-soap surfactants; ii. 0.05 to 2.5% by weight of rheology modifier; iii. 5 to 80% by weight of water; The starch in the cleaning composition, at least 80% by weight, has a granular morphology of round or oval.

14. Use of 0.05 to 5% by weight of starch in the resulting cleansing composition for providing skin clarity compared to a starch-free composition, said cleansing composition comprising: i. 0.1 to 40% by weight of non-soap surfactants; ii. 0.05 to 2.5% by weight of rheology modifier; iii. 5 to 80% by weight of water; The starch in the cleaning composition, at least 80% by weight, has a granular morphology of round or oval.

15. Use of 0.05 to 5% by weight of starch in the resulting cleaning composition to provide a gloss and translucency compared to a starch-free composition, said cleaning composition comprising: i. 0.1 to 40% by weight of non-soap surfactants; ii. 0.05 to 2.5% by weight of rheology modifier; iii. 5 to 80% by weight of water; The starch in the cleaning composition, at least 80% by weight, has a granular morphology of round or oval.

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