EP4630124A1 - A transparent liquid cleansing composition - Google Patents

A transparent liquid cleansing composition

Info

Publication number
EP4630124A1
EP4630124A1 EP23817400.7A EP23817400A EP4630124A1 EP 4630124 A1 EP4630124 A1 EP 4630124A1 EP 23817400 A EP23817400 A EP 23817400A EP 4630124 A1 EP4630124 A1 EP 4630124A1
Authority
EP
European Patent Office
Prior art keywords
composition
soap
acid
mixtures
potassium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23817400.7A
Other languages
German (de)
French (fr)
Inventor
Shajahan Abdul Kareem
Saswati PUJARI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unilever Global IP Ltd
Unilever IP Holdings BV
Original Assignee
Unilever Global IP Ltd
Unilever IP Holdings BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unilever Global IP Ltd, Unilever IP Holdings BV filed Critical Unilever Global IP Ltd
Publication of EP4630124A1 publication Critical patent/EP4630124A1/en
Pending legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • A61Q19/10—Washing or bathing preparations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/36—Carboxylic acids; Salts or anhydrides thereof
    • A61K8/361—Carboxylic acids having more than seven carbon atoms in an unbroken chain; Salts or anhydrides thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
    • A61K8/44—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
    • A61K8/44—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
    • A61K8/442—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof substituted by amido group(s)
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
    • A61K8/44—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
    • A61K8/447—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof containing sulfur
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/04—Carboxylic acids or salts thereof
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/88—Ampholytes; Electroneutral compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D10/00—Compositions of detergents, not provided for by one single preceding group
    • C11D10/04—Compositions of detergents, not provided for by one single preceding group based on mixtures of surface-active non-soap compounds and soap
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/08—Liquid soap, e.g. for dispensers; capsuled
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/20—Chemical, physico-chemical or functional or structural properties of the composition as a whole
    • A61K2800/26—Optical properties
    • A61K2800/262—Transparent; Translucent

Definitions

  • the present invention relates to a transparent liquid cleansing composition.
  • the present invention relates to a liquid cleansing composition that is transparent at low temperatures e.g. 4 to 25°C.
  • WO1 1057909 discloses a mild, substantially isotropic skin cleansing solution was found to be able to suspend insoluble components and provide copious amounts of lather.
  • the cleanser is formulated with synthetic anionic surfactants and a specific ratio of carboxylic acid(s) to hydrophobically modified cross-linked acrylate copolymer(s).
  • the carboxylic acid and acrylate polymer combination were found to provide a synergistic effect on zero shear viscosity at 25°C in a specific pH and copolymer/acid concentration ratio range.
  • IN377416 (ITC Limited) discloses a transparent liquid cleanser composition. Particularly, IN377416 discloses a transparent liquid cleanser composition comprising (a) at least one free fatty acid; and (b) at least one anionic surfactant; and a method of preparing said composition.
  • FR3065874 discloses a cosmetic composition in the form of a liquid, clear hygiene product having a pH less than 8, characterized in that it comprises as active principle: - between 1% and 10% by mass of at least one fatty acid, - between 0.5% and 8% by mass of at least one fatty acid neutralizer reacting with the fatty acid so as to form soap, - between 1 % and 25% by mass of at least one amphoteric primary surfactant belonging to the betaine family, - between 0.5 and 6% by mass of at least one amphoteric and/or anionic secondary surfactant, the other ingredients of the composition being constituted by those admissible in the field cosmetic.
  • liquid cleansing composition that is transparent at lower temperatures, e.g. from 4 to 25°C, remains a challenge. Additionally, delivering such transparent compositions in presence of soap; and therefore in alkaline pH range, and yet having sufficient lathering adds to the challenge. Further, providing such transparent compositions with appropriate viscosity e.g. 2500 to 10,000 cps also adds to the challenge.
  • a composition comprises a soap and an amphoteric surfactant in select weight ratio, along with select anionic surfactant, the composition exhibited transparency of less than 100 nephelometric turbidity units (NTU) at lower temperature e.g. from 4 to 25°C.
  • NTU nephelometric turbidity units
  • the composition exhibited viscosity in the range from 2,500 to 10,000 cps when measured at 25°C. Excellent lathering as evidenced with high foaming was also obtained.
  • the present invention relates to a transparent liquid cleansing composition
  • a transparent liquid cleansing composition comprising: a. a soap; and b. an amphoteric surfactant, wherein the soap and the amphoteric surfactant are present in the weight ratio less than or equal to 2:1 , wherein the transparency of the composition is less than 100 NTU when measured at temperature from 4 to 25°C; and wherein viscosity of the composition is in the range from 2,500 to 10,000 cps when measured at 25°C; wherein the composition further comprises 1 to 25 wt% non-soap anionic surfactant selected from alkyl sulfate, alkyl ether sulfate, alpha olefin sulfonate and mixtures thereof
  • wt% weight based on total weight of the composition and may be abbreviated as “wt%”.
  • wt% weight based on total weight of the composition
  • the use of any and all examples or exemplary language e.g. “such as” provided herein is intended merely to better illuminate the invention and does not in any way limit the scope of the invention otherwise claimed.
  • the terms ‘Skin’ as used herein preferably means to include skin on any part of the body e.g. face, neck, chest, back, arms, underarms, hands, legs, buttocks and scalp.
  • transparent as used herein preferably means the transparency of the liquid composition is less than 100, preferably less than 75, more preferably less than 50, even more preferably less than 25, nephelometric turbidity units (NTU).
  • a transparent liquid cleansing composition as per the present invention comprises: a. a soap; and b. an amphoteric surfactant, wherein the soap and the amphoteric surfactant are present in weight ratio less than or equal to 2:1, wherein the transparency of the composition is less than 100 NTU when measured at temperature in the range from 4 to 25°C; and wherein viscosity of the composition is in the range from 2,500 to 10,000 cps when measured at 25°C.
  • the composition is suitable for the purpose of cleansing a surface e.g. skin.
  • the composition is used in suitable amount e.g. 5 to 10 mL; and applied to the skin using suitable means, often using hands, and alternatively sponge, loofah or similar along with copious amount of water to create lather; which is rinsed off with water to cleanse the surface, e.g. the skin.
  • the composition comprises soap.
  • Soap is salt of a fatty acid which also functions as an anionic surfactant. Soap when used in cleansing compositions, is known to improve the skin feel of the composition. However, soap, due to the alkaline pH, is often harsh on the skin possibly leading to dryness or itchy feel. Therefore, despite such preferred benefits soap may provide, using it in high amounts often leads to less preferred effects. Therefore, soap is used in moderate amounts in the present invention. However, even in moderate amounts like those described herein, presence of soap tends to cause opacity to liquid cleansing compositions. In such case, one way to obtain a transparent composition is to remove soap but this leads to loss of benefits delivered by soap. Therefore, delivering a transparent and appropriately viscous composition despite it contains soap remains a challenge. The present invention has solved this problem.
  • the soap is a salt of fatty acid that has carbon chain length from 6 to 30, preferably from 8 to 14 and more preferably from 10 to 12.
  • sodium or potassium salts of fatty acids e.g. octanoic acid, caprylic acid, lauric acid, myristic acid and palmitic acid
  • soaps are particularly suitable for use in the present invention.
  • soaps include potassium laurate, potassium myristate, potassium palmitate, sodium laurate, sodium myristate, sodium palmitate.
  • potassium salts of fatty acids are preferred.
  • the composition comprises from 0.01 to 7 wt%, more preferably from 0.05 to 6 wt%, even more preferably from 0.01 to 5 wt%, further more preferably from 0.05 to 4 wt%, still more preferably from 0.1 to 2 wt% and yet more preferably from 0.1 to 1 wt% soap.
  • the composition further comprises an amphoteric surfactant.
  • amphoteric surfactants are selected from betaine e.g. cocamidopropyl betaine (CAPB), sulfobetaine, cocoamphoacetate and mixtures thereof. More preferably, amophoteric surfactants are selected from betaine, sulfobetaine and mixtures thereof. Further more preferably, amphoteric surfactants selected is CAPB.
  • the composition comprises from 1 to 5 wt%, more preferably from 1.5 to 4.5 wt%, even more preferably from 2 to 4 wt%, further more preferably from 2 to 3.5 wt% and still more preferably from 2.5 to 3 wt% amphoteric surfactants.
  • the composition comprises the soap and the amphoteric surfactant wherein the weight ratio of soap to amphoteric surfactant is less than or equal to 2:1.
  • the weight ratio of soap to amphoteric surfactant is less than 2:1.
  • potassium laurate is the soap and CAPB is the amphoteric surfactant
  • they are present in the weight ratio 2:1 or less than 2:1 e.g. 1.75:1, more preferably less than 1.5:1 , even more preferably less than 1.25:1 and further more preferably 1:1.
  • the weight ratio of a soap and an amphoteric surfactant is more than 2: 1 , i.e. when it is not according to the present invention, it was found a liquid cleansing composition with required transparency and/or viscosity was not obtained.
  • the composition exhibits transparency less than 100 NTU, preferably less than 75 NTU, more preferably less than 50 NTU, even more preferably less than 25 NTU, when measured at temperatures e.g. from 4 to 25°C.
  • the composition is substantially isotropic and finely dispersed liquid cleansing composition.
  • the composition exhibits viscosity in the range 2,500 to 10,000 cps at 25°C.
  • the composition exhibits viscosity in the range from 3,000 to 9,000 cps, more preferably from 3,500 to 8,500 cps, even more preferably from 4,000 to 8,000 cps and still more preferably from 4,000 to 7,000 cps, when measured at 25°C.
  • the viscosity throughout this specification has been reported in cps. In SI units, the conversion is that 1000 cps is one Pascal-second.
  • the composition further comprises inorganic salts selected from sodium chloride, sodium iodide, sodium bromide, sodium sulfate, potassium chloride, potassium iodide, potassium bromide, potassium sulfate and mixtures thereof. More preferably, the inorganic salts are selected from sodium chloride, sodium sulfate, potassium chloride, potassium sulfate and mixtures thereof. Even more preferably, the inorganic salts are selected from sodium chloride, potassium chloride and mixtures thereof.
  • the composition comprises from 0.01 to less than 3 wt%, more preferably from 0.05 to 2.5 wt%, even more preferably from 0.1 to 2 wt%, further more preferably from 0.5 to 1.5 wt% and still more preferably from 0.5 to 1 wt% of one or more inorganic salts described above.
  • the composition further comprises a non-soap anionic surfactant.
  • Non-soap anionic surfactants such as those describe below, are known to provide foam and cleansing action.
  • a non-soap anionic surfactants is selected from alkyl sulfates, alkyl ether sulfates (AES), alpha olefin sulfonates (AOS) and mixtures thereof. More preferably, the non-soap anionic surfactant is selected from alkyl sulfates, alkyl ether sulfates and mixtures thereof. Even more preferably, alkyl ether sulfates are used as the non-soap anionic surfactant in the composition.
  • alkyl sulfates that may be used as non-soap anionic surfactant in the composition include sodium lauryl sulfate (SLS), sodium myristyl sulfate; and mixtures thereof.
  • SLS sodium lauryl sulfate
  • myristyl sulfate sodium myristyl sulfate
  • AES that may be used as non-soap anionic surfactants
  • Ri is saturated or unsaturated Cs-Ci6, preferably C12-C14 alkyl chain; preferably, R1 is a saturated Cs-Ci6, more preferably a saturated C12-C14 alkyl chain;
  • R’ is ethylene; n is from 1 to 18; preferably from 1 to 15, more preferably from 1 to 10 and even more preferably from 1 to 5,
  • M + is a suitable cation which provides charge neutrality, preferably sodium, calcium, potassium, or magnesium, more preferably a sodium cation.
  • AES examples include sodium lauryl ether sulfate (SLES), sodium myristyl ether sulfate and sodium palmityl ether sulfate and mixtures thereof.
  • SLES sodium lauryl ether sulfate
  • Preferred AES is SLES having 1 to 3 ethylene oxide units per molecule. SLES having 1 to 2 ethylene oxide units per molecule is more preferred.
  • the composition comprises from 1 to 25 wt%, more preferably from 3 to 22 wt%, even more preferably from 5 to 18 wt%, further more preferably from 8 to 15 wt% and still more preferably from 10 to 12 wt% non-soap anionic surfactant that may be selected from one or more non-soap anionic surfactants described above.
  • the composition further comprises an octadecanoic acid.
  • the octadecanoic acid is an acid that contains 18 carbon atoms in a chain that may be linear or branched; and may be saturated or unsaturated at the same time.
  • the octadecanoic acid is selected from 10-hydroxystearic acid (10-HSA), 12-HSA, petroselinic acid, conjugated linoleic acid and mixtures thereof. More preferably, the octadecanoic acid is selected from 10-HSA, 12-HSA, petroselinic acid and mixtures thereof. Even more preferably, the octadecanoic acid is selected from 10-HSA, 12-HSA and mixtures thereof. Further more preferably, the octadecanoic acid selected is 12-HSA.
  • the composition comprises an octadecanoic acid preferably from 0.01 to 2 wt%, more preferably from 0.05 to 1.5 wt%, even more preferably from 0.1 to 1 wt%, further more preferably from 0.25 to 0.75 wt% and still more preferably from 0.3 to 0.5 wt% octadecanoic acid.
  • the composition does not comprise any viscosity modifying polymers.
  • the composition comprises 0 to 0.1 wt% viscosity modifying polymers.
  • the composition comprises a viscosity modifying polymers they may be selected from water soluble/or dispersible polymers include the carbohydrate gums such as cellulose gum, microcrystalline cellulose, cellulose gel, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, sodium carboxymethylcellulose, methyl cellulose, ethyl cellulose, guar gum, gum karaya, gum tragacanth, gum arabic, gum acacia, gum agar, xanthan gum and mixtures thereof; modified and nonmodified starch granules and pregelatinized cold water soluble starch; emulsion polymers such as Aculyn® 28, Aculyn® 22 or Carbopol® Aqua SF1 ; cationic polymer such as modified polysaccharides including cationic guar available from Rhone Poulenc under the trade name Jaguar® C13S, Jaguar® C14S, Jaguar® C17, or Jaguar® C16;
  • pH of the composition Preferably, the pH of the composition is in the range from 8.0 to 9.5, more preferably, from 8.5 to 9.0.
  • the composition comprises water from 60 to 98 wt%, more preferably from 65 to 95 wt%, even more preferably from 70 to 90 wt%, further more preferably from 75 to 85 wt% and still more preferably from 80 to 85 wt% water.
  • Preservatives are preferably from 60 to 98 wt%, more preferably from 65 to 95 wt%, even more preferably from 70 to 90 wt%, further more preferably from 75 to 85 wt% and still more preferably from 80 to 85 wt% water.
  • the composition further comprises preservatives to protect the composition against the growth of potentially harmful microorganisms.
  • preservatives include hydantoin derivatives, propionate salts, a variety of quaternary ammonium compounds, phenoxyethanol, imidazolidinyl urea, sodium dehydroacetate and benzyl alcohol.
  • Preservatives are preferably used in amounts ranging from 0.01 wt% to 2 wt% and more preferably from 0.1 to 1 wt%.
  • composition may further comprise emollients, such as stearyl alcohol, glyceryl monoricinoleate, mink oil, cetyl alcohol, isopropyl isostearate, stearic acid, isobutyl palmitate, isocetyl stearate, oleyl alcohol, isopropyl laurate, hexyl laurate, decyl oleate, octadecan-2-ol, isocetyl alcohol, eicosanyl alcohol, behenyl alcohol, cetyl palmitate, silicone oils such as dimethylpolysiloxane, di-n-butyl sebacate, isopropyl myristate, isopropyl palmitate, isopropyl stearate, butyl stearate, polyethylene glycol, triethylene glycol, lanolin, cocoa butter, corn oil, cotton seed oil, olive oil, palm kernel oil, rape seed oil, safflower seed oil, evening prim
  • compositions may further comprise a wide range of other optional components e.g. antioxidants, buffering agents, colorants, astringents, perfume, humectants, conditioners, pH adjusters, skin soothing agents and skin healing agents.
  • antioxidants e.g. antioxidants, buffering agents, colorants, astringents, perfume, humectants, conditioners, pH adjusters, skin soothing agents and skin healing agents.
  • compositions were made, it was stored at room temperature ( ⁇ 24 ⁇ 1°C) overnight and the turbidity of the sample was measured using the turbidity meter using the following method. For this, a composition was filled in a glass vial, and it was ensured that air bubbles were not present. The glass vial was placed inside a turbidity meter (TURBIQUANTT 1100 IR) and measurements were carried out. The measurements were recorded once a stable reading was obtained. For measuring turbidity at lower temperatures, the compositions were stored in a refrigerator overnight, at 4 ⁇ 1°C. The compositions were taken out from the refrigerator on the following day and turbidity measurement was carried out as describe above.
  • a turbidity meter TURBIQUANTT 1100 IR
  • compositions as shown in Table -4 below were prepared and the clarity (as observed visually) at the end of 24 hours was noted. Further the amount of foam generated was measured using the procedure as given below:
  • compositions were diluted 100 times with deionized water (0.3 gm of product and 2.7 gm of water) in a graduated measuring cylinder (250 ml capacity).
  • the measuring cylinder was closed with a glass lid and fixed inside an instrument for foam generation.
  • the cylinders were rotated at 12.5 RPM for 40 rotations to generate foam. The average value of the foam generated from two cylinders is noted.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Birds (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Epidemiology (AREA)
  • Organic Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Emergency Medicine (AREA)
  • Dermatology (AREA)
  • Cosmetics (AREA)

Abstract

The present invention relates to a liquid cleansing composition that comprises a soap and an amphoteric surfactant in select weight ratio along with select non-soap anionic surfactant. The transparency of the composition is less than 100 NTU when measured at temperatures from 4 to 25°C and the viscosity is in the range from 2,500 to 10,000 cps measured at 25°C with the composition delivering superior foam.

Description

A transparent liquid cleansing composition
Field of the invention
The present invention relates to a transparent liquid cleansing composition. Particularly, the present invention relates to a liquid cleansing composition that is transparent at low temperatures e.g. 4 to 25°C.
Background of the invention
WO1 1057909 (Unilever) discloses a mild, substantially isotropic skin cleansing solution was found to be able to suspend insoluble components and provide copious amounts of lather. The cleanser is formulated with synthetic anionic surfactants and a specific ratio of carboxylic acid(s) to hydrophobically modified cross-linked acrylate copolymer(s). The carboxylic acid and acrylate polymer combination were found to provide a synergistic effect on zero shear viscosity at 25°C in a specific pH and copolymer/acid concentration ratio range.
IN377416 (ITC Limited) discloses a transparent liquid cleanser composition. Particularly, IN377416 discloses a transparent liquid cleanser composition comprising (a) at least one free fatty acid; and (b) at least one anionic surfactant; and a method of preparing said composition.
FR3065874 discloses a cosmetic composition in the form of a liquid, clear hygiene product having a pH less than 8, characterized in that it comprises as active principle: - between 1% and 10% by mass of at least one fatty acid, - between 0.5% and 8% by mass of at least one fatty acid neutralizer reacting with the fatty acid so as to form soap, - between 1 % and 25% by mass of at least one amphoteric primary surfactant belonging to the betaine family, - between 0.5 and 6% by mass of at least one amphoteric and/or anionic secondary surfactant, the other ingredients of the composition being constituted by those admissible in the field cosmetic.
Despite efforts thus far, delivering a liquid cleansing composition that is transparent at lower temperatures, e.g. from 4 to 25°C, remains a challenge. Additionally, delivering such transparent compositions in presence of soap; and therefore in alkaline pH range, and yet having sufficient lathering adds to the challenge. Further, providing such transparent compositions with appropriate viscosity e.g. 2500 to 10,000 cps also adds to the challenge.
It has been found that when a composition comprises a soap and an amphoteric surfactant in select weight ratio, along with select anionic surfactant, the composition exhibited transparency of less than 100 nephelometric turbidity units (NTU) at lower temperature e.g. from 4 to 25°C. The composition exhibited viscosity in the range from 2,500 to 10,000 cps when measured at 25°C. Excellent lathering as evidenced with high foaming was also obtained.
Summary of the invention
The present invention relates to a transparent liquid cleansing composition comprising: a. a soap; and b. an amphoteric surfactant, wherein the soap and the amphoteric surfactant are present in the weight ratio less than or equal to 2:1 , wherein the transparency of the composition is less than 100 NTU when measured at temperature from 4 to 25°C; and wherein viscosity of the composition is in the range from 2,500 to 10,000 cps when measured at 25°C; wherein the composition further comprises 1 to 25 wt% non-soap anionic surfactant selected from alkyl sulfate, alkyl ether sulfate, alpha olefin sulfonate and mixtures thereof
Detailed description of the invention
Any feature of one aspect of the present invention may be utilized in any other aspect of the invention. The word “comprising” is intended to mean “including” but not necessarily “consisting of” or “composed of.” In other words, the listed steps or options need not be exhaustive. Except in the operating and comparative examples, or where otherwise explicitly indicated, all numbers in this description indicating amounts of material or conditions of reaction, physical properties of materials and/or use are to be understood as modified by the word “about”. Numerical ranges expressed in the format "from x to y" are understood to include x and y. When for a specific feature multiple preferred ranges are described in the format "from x to y", it is understood that all ranges combining the different endpoints are also contemplated. Unless specified otherwise, amounts as used herein are expressed in percentage by weight based on total weight of the composition and may be abbreviated as “wt%”. The use of any and all examples or exemplary language e.g. “such as” provided herein is intended merely to better illuminate the invention and does not in any way limit the scope of the invention otherwise claimed. The terms ‘Skin’ as used herein, preferably means to include skin on any part of the body e.g. face, neck, chest, back, arms, underarms, hands, legs, buttocks and scalp. The term ‘transparent’ as used herein preferably means the transparency of the liquid composition is less than 100, preferably less than 75, more preferably less than 50, even more preferably less than 25, nephelometric turbidity units (NTU).
Accordingly, a transparent liquid cleansing composition as per the present invention (the composition) comprises: a. a soap; and b. an amphoteric surfactant, wherein the soap and the amphoteric surfactant are present in weight ratio less than or equal to 2:1, wherein the transparency of the composition is less than 100 NTU when measured at temperature in the range from 4 to 25°C; and wherein viscosity of the composition is in the range from 2,500 to 10,000 cps when measured at 25°C.
The composition is suitable for the purpose of cleansing a surface e.g. skin. Typically, the composition is used in suitable amount e.g. 5 to 10 mL; and applied to the skin using suitable means, often using hands, and alternatively sponge, loofah or similar along with copious amount of water to create lather; which is rinsed off with water to cleanse the surface, e.g. the skin.
The composition comprises soap. Soap is salt of a fatty acid which also functions as an anionic surfactant. Soap when used in cleansing compositions, is known to improve the skin feel of the composition. However, soap, due to the alkaline pH, is often harsh on the skin possibly leading to dryness or itchy feel. Therefore, despite such preferred benefits soap may provide, using it in high amounts often leads to less preferred effects. Therefore, soap is used in moderate amounts in the present invention. However, even in moderate amounts like those described herein, presence of soap tends to cause opacity to liquid cleansing compositions. In such case, one way to obtain a transparent composition is to remove soap but this leads to loss of benefits delivered by soap. Therefore, delivering a transparent and appropriately viscous composition despite it contains soap remains a challenge. The present invention has solved this problem.
The soap is a salt of fatty acid that has carbon chain length from 6 to 30, preferably from 8 to 14 and more preferably from 10 to 12. Thus, sodium or potassium salts of fatty acids e.g. octanoic acid, caprylic acid, lauric acid, myristic acid and palmitic acid, are soaps that are particularly suitable for use in the present invention. Examples of soaps include potassium laurate, potassium myristate, potassium palmitate, sodium laurate, sodium myristate, sodium palmitate. In between sodium salts or potassium salts of fatty acids, potassium salts of fatty acids are preferred.
Preferably, the composition comprises from 0.01 to 7 wt%, more preferably from 0.05 to 6 wt%, even more preferably from 0.01 to 5 wt%, further more preferably from 0.05 to 4 wt%, still more preferably from 0.1 to 2 wt% and yet more preferably from 0.1 to 1 wt% soap.
Amphoteric surfactant
The composition further comprises an amphoteric surfactant. They provide foam boost and improve sensorial properties of the composition. Preferably, amphoteric surfactants are selected from betaine e.g. cocamidopropyl betaine (CAPB), sulfobetaine, cocoamphoacetate and mixtures thereof. More preferably, amophoteric surfactants are selected from betaine, sulfobetaine and mixtures thereof. Further more preferably, amphoteric surfactants selected is CAPB.
Preferably, the composition comprises from 1 to 5 wt%, more preferably from 1.5 to 4.5 wt%, even more preferably from 2 to 4 wt%, further more preferably from 2 to 3.5 wt% and still more preferably from 2.5 to 3 wt% amphoteric surfactants.
Ratio of soap and amphoteric surfactant
The composition comprises the soap and the amphoteric surfactant wherein the weight ratio of soap to amphoteric surfactant is less than or equal to 2:1. Preferably, the weight ratio of soap to amphoteric surfactant is less than 2:1. For example, if potassium laurate is the soap and CAPB is the amphoteric surfactant, then they are present in the weight ratio 2:1 or less than 2:1 e.g. 1.75:1, more preferably less than 1.5:1 , even more preferably less than 1.25:1 and further more preferably 1:1. When the weight ratio of a soap and an amphoteric surfactant is more than 2: 1 , i.e. when it is not according to the present invention, it was found a liquid cleansing composition with required transparency and/or viscosity was not obtained.
It has been found that when the weight ratio of a soap and an amphoteric surfactant is as described above, a transparent and viscous liquid composition was obtained that exhibited transparency and viscosity as described below. Transparency
The composition exhibits transparency less than 100 NTU, preferably less than 75 NTU, more preferably less than 50 NTU, even more preferably less than 25 NTU, when measured at temperatures e.g. from 4 to 25°C. Preferably, the composition is substantially isotropic and finely dispersed liquid cleansing composition. The phrase ‘substantially’, preferably means ‘more than 90%’, more preferably it means ‘more than 95%’ and even more preferably it means ‘more than 99%’, of the composition.
The composition exhibits viscosity in the range 2,500 to 10,000 cps at 25°C. Preferably, the composition exhibits viscosity in the range from 3,000 to 9,000 cps, more preferably from 3,500 to 8,500 cps, even more preferably from 4,000 to 8,000 cps and still more preferably from 4,000 to 7,000 cps, when measured at 25°C. The viscosity throughout this specification has been reported in cps. In SI units, the conversion is that 1000 cps is one Pascal-second.
Inorganic salts
Preferably, the composition further comprises inorganic salts selected from sodium chloride, sodium iodide, sodium bromide, sodium sulfate, potassium chloride, potassium iodide, potassium bromide, potassium sulfate and mixtures thereof. More preferably, the inorganic salts are selected from sodium chloride, sodium sulfate, potassium chloride, potassium sulfate and mixtures thereof. Even more preferably, the inorganic salts are selected from sodium chloride, potassium chloride and mixtures thereof.
Preferably, the composition comprises from 0.01 to less than 3 wt%, more preferably from 0.05 to 2.5 wt%, even more preferably from 0.1 to 2 wt%, further more preferably from 0.5 to 1.5 wt% and still more preferably from 0.5 to 1 wt% of one or more inorganic salts described above.
Non-soap anionic surfactant
Preferably, the composition further comprises a non-soap anionic surfactant. Non-soap anionic surfactants such as those describe below, are known to provide foam and cleansing action.
Preferably, a non-soap anionic surfactants is selected from alkyl sulfates, alkyl ether sulfates (AES), alpha olefin sulfonates (AOS) and mixtures thereof. More preferably, the non-soap anionic surfactant is selected from alkyl sulfates, alkyl ether sulfates and mixtures thereof. Even more preferably, alkyl ether sulfates are used as the non-soap anionic surfactant in the composition.
Examples of alkyl sulfates that may be used as non-soap anionic surfactant in the composition include sodium lauryl sulfate (SLS), sodium myristyl sulfate; and mixtures thereof.
Examples of AES that may be used as non-soap anionic surfactants include anionic surfactants of the general formula:
Ri-(OR’)n-O-SO3- M+, wherein:
Ri is saturated or unsaturated Cs-Ci6, preferably C12-C14 alkyl chain; preferably, R1 is a saturated Cs-Ci6, more preferably a saturated C12-C14 alkyl chain;
R’ is ethylene; n is from 1 to 18; preferably from 1 to 15, more preferably from 1 to 10 and even more preferably from 1 to 5,
M+ is a suitable cation which provides charge neutrality, preferably sodium, calcium, potassium, or magnesium, more preferably a sodium cation.
Examples of AES that may be used as non-soap anionic surfactants include sodium lauryl ether sulfate (SLES), sodium myristyl ether sulfate and sodium palmityl ether sulfate and mixtures thereof. Preferred AES is SLES having 1 to 3 ethylene oxide units per molecule. SLES having 1 to 2 ethylene oxide units per molecule is more preferred.
Preferably, the composition comprises from 1 to 25 wt%, more preferably from 3 to 22 wt%, even more preferably from 5 to 18 wt%, further more preferably from 8 to 15 wt% and still more preferably from 10 to 12 wt% non-soap anionic surfactant that may be selected from one or more non-soap anionic surfactants described above.
Octadecanoic acid
Preferably, the composition further comprises an octadecanoic acid. It will be understood that the octadecanoic acid is an acid that contains 18 carbon atoms in a chain that may be linear or branched; and may be saturated or unsaturated at the same time.
Preferably, the octadecanoic acid is selected from 10-hydroxystearic acid (10-HSA), 12-HSA, petroselinic acid, conjugated linoleic acid and mixtures thereof. More preferably, the octadecanoic acid is selected from 10-HSA, 12-HSA, petroselinic acid and mixtures thereof. Even more preferably, the octadecanoic acid is selected from 10-HSA, 12-HSA and mixtures thereof. Further more preferably, the octadecanoic acid selected is 12-HSA. The composition comprises an octadecanoic acid preferably from 0.01 to 2 wt%, more preferably from 0.05 to 1.5 wt%, even more preferably from 0.1 to 1 wt%, further more preferably from 0.25 to 0.75 wt% and still more preferably from 0.3 to 0.5 wt% octadecanoic acid.
Polymers
Preferably, the composition does not comprise any viscosity modifying polymers. Preferably, the composition comprises 0 to 0.1 wt% viscosity modifying polymers.
However, if the composition comprises a viscosity modifying polymers they may be selected from water soluble/or dispersible polymers include the carbohydrate gums such as cellulose gum, microcrystalline cellulose, cellulose gel, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, sodium carboxymethylcellulose, methyl cellulose, ethyl cellulose, guar gum, gum karaya, gum tragacanth, gum arabic, gum acacia, gum agar, xanthan gum and mixtures thereof; modified and nonmodified starch granules and pregelatinized cold water soluble starch; emulsion polymers such as Aculyn® 28, Aculyn® 22 or Carbopol® Aqua SF1 ; cationic polymer such as modified polysaccharides including cationic guar available from Rhone Poulenc under the trade name Jaguar® C13S, Jaguar® C14S, Jaguar® C17, or Jaguar® C16; cationic modified cellulose such as LICARE® Polymer JR 30 or JR 40 from Amerchol; N- Hance® 3000, N-Hance® 3196, N-Hance® GPX 215 or N-Hance® GPX 196 from Hercules; synthetic cationic polymer such as Merquat® 100, Merquat® 280, Merquat® 281 and Merquat® 550 sold by Nalco; cationic starches such as StaLok® 100, 200, 300 and 400 sold by Staley Inc.; cationic galactomannans such as Galactasol® 800 series by Henkel, Inc.; Quadrosoft® LM- 200; and Polyquaternium-24®. Also suitable are high molecular weight polyethylene glycols such as Polyox® WSR-205 (PEG 14M), Polyox® WSR-N-60K (PEG 45), and Polyox® WSR-301 (PEG 90M). pH of the composition Preferably, the pH of the composition is in the range from 8.0 to 9.5, more preferably, from 8.5 to 9.0.
Water
Preferably, the composition comprises water from 60 to 98 wt%, more preferably from 65 to 95 wt%, even more preferably from 70 to 90 wt%, further more preferably from 75 to 85 wt% and still more preferably from 80 to 85 wt% water. Preservatives
Preferably, the composition further comprises preservatives to protect the composition against the growth of potentially harmful microorganisms. Particularly preferred preservatives include hydantoin derivatives, propionate salts, a variety of quaternary ammonium compounds, phenoxyethanol, imidazolidinyl urea, sodium dehydroacetate and benzyl alcohol. Preservatives are preferably used in amounts ranging from 0.01 wt% to 2 wt% and more preferably from 0.1 to 1 wt%.
Emollients
The composition may further comprise emollients, such as stearyl alcohol, glyceryl monoricinoleate, mink oil, cetyl alcohol, isopropyl isostearate, stearic acid, isobutyl palmitate, isocetyl stearate, oleyl alcohol, isopropyl laurate, hexyl laurate, decyl oleate, octadecan-2-ol, isocetyl alcohol, eicosanyl alcohol, behenyl alcohol, cetyl palmitate, silicone oils such as dimethylpolysiloxane, di-n-butyl sebacate, isopropyl myristate, isopropyl palmitate, isopropyl stearate, butyl stearate, polyethylene glycol, triethylene glycol, lanolin, cocoa butter, corn oil, cotton seed oil, olive oil, palm kernel oil, rape seed oil, safflower seed oil, evening primrose oil, soybean oil, sunflower seed oil, avocado oil, sesame seed oil, coconut oil, arachis oil, castor oil, acetylated lanolin alcohols, petroleum jelly, mineral oil, butyl myristate, isostearic acid, palmitic acid, isopropyl linoleate, lauryl lactate, myristyl lactate, decyl oleate, myristyl myristate. Preferably, emollients are added in relatively low amount e.g. 0 to 3 wt% and 1 to 2 wt%.
The compositions may further comprise a wide range of other optional components e.g. antioxidants, buffering agents, colorants, astringents, perfume, humectants, conditioners, pH adjusters, skin soothing agents and skin healing agents.
The invention is described further using the following non-limiting examples.
Examples
Protocols:
All compositions shown in tables below, were made using deionized water. Water and potassium laurate powder (100%; Viva Corporation) were taken in amounts, as shown in tables below, in a container and mixed thoroughly using an overhead stirrer (Heidolph). Subsequently, the amphoteric surfactant, CAPB (30%; Galaxy surfactats), and a non-soap anionic surfactant, SLES (70%; Galaxy surfactants), were added to the container and were homogenized completely. Both these surfactants, SLES and CAPB, were taken in proportionate amount from their 70% and 30% concentrated stocks; respectively, so as to have the concentration of these surfactants as shown in the tables below. Lastly, salt (sodium chloride or potassium chloride; 100% lab grade) was added in amounts as shown in tables below.
Measurement of T ransparency
Once the compositions were made, it was stored at room temperature (~24 ±1°C) overnight and the turbidity of the sample was measured using the turbidity meter using the following method. For this, a composition was filled in a glass vial, and it was ensured that air bubbles were not present. The glass vial was placed inside a turbidity meter (TURBIQUANTT 1100 IR) and measurements were carried out. The measurements were recorded once a stable reading was obtained. For measuring turbidity at lower temperatures, the compositions were stored in a refrigerator overnight, at 4 ± 1°C. The compositions were taken out from the refrigerator on the following day and turbidity measurement was carried out as describe above.
Measurement of Viscosity
Zero calibration was done every time when using the viscometer (calibration without any spindle). The spindle RV-5 was fixed in the viscometer. The RPM and measurement time were set to 20 and 30 sec, respectively. The spindle was submerged into a test sample (a composition) until the mark mentioned on the spindle. As the measurement was started, the spindle rotated inside the sample and corresponding torque was measured and the instrument showed the calculated viscosity. The viscosity was measured after 30 sec; and was measured at room temperature, 25°C. For this, Brookfield RV viscometer with RV-5 spindle, at 20 RPM for 30sec was used.
Examples 1 to 15 (according to the invention) and examples A to E (control):
Table 1: Examples 1 to 10 according to the invention
(KLa: Potassium laurate)
Table 2: Examples 11 to 15 according to the invention (KLa: Potassium laurate)
Table 3: Control examples
(KLa: Potassium laurate; precip: precipitated matter observed)
Examples 16, 17, F, G: Effect of inclusion of anionic surfactant as compared to non-ionic surfactant:
Compositions as shown in Table -4 below were prepared and the clarity (as observed visually) at the end of 24 hours was noted. Further the amount of foam generated was measured using the procedure as given below:
Compositions were diluted 100 times with deionized water (0.3 gm of product and 2.7 gm of water) in a graduated measuring cylinder (250 ml capacity). The measuring cylinder was closed with a glass lid and fixed inside an instrument for foam generation. The cylinders were rotated at 12.5 RPM for 40 rotations to generate foam. The average value of the foam generated from two cylinders is noted.
Table - 4
The data in Table - 4 above indicates that the composition as per the invention comprising anionic surfactant SLES (Examples 16 and 17) delivers better lather, with no compromise on clarity as compared to Examples outside the invention (Examples F and G) comprising non- ionic surfactant.

Claims

Claims
1. A transparent liquid cleansing composition comprising: a. a soap; and b. an amphoteric surfactant, wherein the soap and the amphoteric surfactant are present in weight ratio less than or equal to 2:1, wherein the transparency of the composition is less than 100 NTU when measured at temperature in the range from 4 to 25°C; and wherein viscosity of the composition is in the range from 2,500 to 10,000 cps when measured at 25°C; wherein the composition further comprises 1 to 25 wt% non-soap anionic surfactant selected from alkyl sulfate, alkyl ether sulfate, alpha olefin sulfonate and mixtures thereof.
2. The composition as claimed in claim 1 wherein the composition comprises 0.01 to 7 wt% soap.
3. The composition as claimed in claims 1 or 2 wherein the soap is selected from salts of fatty acids having carbon chain length Cs to C14 and mixtures thereof.
4. The composition as claimed in any one of claims 1 to 3 wherein the soap selected is from salts of fatty acids having carbon chain length Cw to C12 and mixtures thereof.
5. The composition as claimed in any one of claims 1 to 4 wherein the soap is formed of potassium salt of a fatty acid.
6. The composition as claimed in any one of claims 1 to 5 wherein the composition comprises from 1 to 5 wt% amphoteric surfactant.
7. The composition as claimed in any one of claims 1 to 6 wherein the amphoteric surfactant is selected from betaine, sulfobetaine, cocoamphoacetate; and mixtures thereof.
8. The composition as claimed in any one of claims 1 to 7 wherein the amphoteric surfactant is cocamidopropyl betaine. The composition as claimed in claim any one of claims 1 to 8 wherein the composition further comprises from 0.1 to less than 3 wt% inorganic salt selected from sodium chloride, sodium iodide, sodium bromide, sodium sulfate, potassium chloride, potassium iodide, potassium bromide, potassium sulfate; and mixtures thereof. The composition as claimed in any one of claims 1 to 9 wherein the composition further comprises an octadecanoic acid selected from 10-hydroxystearic acid, 12- hydroxy stearic acid, petroselinic acid, conjugated linoleic acid and mixtures thereof. The composition as claimed in claim 10 wherein the octadecanoic acid is selected from 10-hydroxystearic acid, 12-hydroxystearic acid and mixtures thereof. The composition as claimed in claim 11 wherein the octadecanoic acid is 12- hydroxystearic acid. The composition as claimed in any one of claims 1 to 12 wherein the pH of the composition is in the range from 8.0 to 9.5.
EP23817400.7A 2022-12-08 2023-12-01 A transparent liquid cleansing composition Pending EP4630124A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP22212173 2022-12-08
PCT/EP2023/083884 WO2024120986A1 (en) 2022-12-08 2023-12-01 A transparent liquid cleansing composition

Publications (1)

Publication Number Publication Date
EP4630124A1 true EP4630124A1 (en) 2025-10-15

Family

ID=84462474

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23817400.7A Pending EP4630124A1 (en) 2022-12-08 2023-12-01 A transparent liquid cleansing composition

Country Status (4)

Country Link
EP (1) EP4630124A1 (en)
JP (1) JP2025539505A (en)
CN (1) CN120302958A (en)
WO (1) WO2024120986A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4486328A (en) * 1983-05-03 1984-12-04 Colgate-Palmolive Company Betaine-soap shampoo composition
AU2010204940B2 (en) * 2009-01-13 2012-06-07 The Procter & Gamble Company Rinse-off personal care compositions
US8017566B2 (en) 2009-11-13 2011-09-13 Conopco, Inc. Liquid personal cleansing composition
EP2902011B1 (en) * 2014-02-04 2018-01-17 Basf Se Aqueous tenside compositions
CN107333467B (en) * 2014-12-26 2021-03-19 莱雅公司 Clear or translucent skin cleansing compositions
FR3065874B1 (en) 2017-05-02 2023-12-22 Fareva COSMETIC COMPOSITION IN THE FORM OF A LIQUID AND CLEAR HYGIENE PRODUCT WITH A PH LESS THAN 8
CA3179813A1 (en) * 2020-06-04 2021-12-09 David Waters Naturally derived surfactant system and composition comprising the same

Also Published As

Publication number Publication date
CN120302958A (en) 2025-07-11
JP2025539505A (en) 2025-12-05
WO2024120986A1 (en) 2024-06-13

Similar Documents

Publication Publication Date Title
AU2005244429B2 (en) Personal liquid cleanser composition stabilized with a starch structuring system
JP5860883B2 (en) Liquid soap composition
AU2005244485B2 (en) Personal product liquid cleansers comprising combined fatty acid and water soluble or water swellable starch structuring system
CA2696944C (en) Stable liquid cleansing compositions containing fatty acyl isethionate surfactant
JP5941408B2 (en) Less irritating foaming liquid detergent comprising low level fatty isethionate product and low content of total fatty acids and / or fatty acid soap
MX2011003138A (en) Stable cleansing compositions containing fatty acyl isethionate surfactant products having more than 10 wt.% of fatty acid/fatty soap content using high level of polyol and methods thereof.
EP4565190A1 (en) A liquid cleansing composition
EP4630124A1 (en) A transparent liquid cleansing composition
CN114921296A (en) Soap-based self-thickening cleansing compositions
WO2025180882A1 (en) A personal cleansing composition
WO2025180854A1 (en) A personal cleansing composition
WO2025180925A1 (en) A liquid skin cleansing composition
EP4642427A1 (en) Translucent or transparent isotropic liquid wash composition

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17P Request for examination filed

Effective date: 20250424

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR

17Q First examination report despatched

Effective date: 20251008

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)