Personal care compositions having a combination of galactomannans and succinoglycan

Abstract

The present invention relates to personal care compositions having a combination of one or more galactomannan and succinoglycan and free of C20-24 fatty alcohol and a metal salt.

Description

[0001] Personal Care Compositions Having a Combination of Galactomannans and Succinoglycan

[0002] TECHNICAL FIELD

[0003] The present invention relates to personal care compositions having a combination of one or more galactomannan and succinoglycan and free of C20-24 fatty alcohol and its use for treatment of skin or hair. Additionally, a process of preparing such compositions is described. The combination of one or more galactomannan and succinoglycan in the absence of C20-24 fatty alcohol and a metal salt is desirable for increasing the viscosity of the personal care composition.

[0004] BACKGROUND

[0005] Personal care compositions are commonly used on a daily basis by customers all over the world.

[0006] The use of thickeners in personal care compositions is required to achieve important physical chemical properties such as viscosity and stability, allowing adequate structure of the desired composition.

[0007] Polyacrylates are widely used as rheological modifiers, thickeners, viscosity enhancers or other performances related to their structuring nature in emulsions as described in US 2008 / 0226616 and EP 2 611 412. However, the polyacrylates are considered microplastics non-biodegradables sources that remain for a long time in the environment. The microplastic issues are in the spotlight of health concerns regularly identified in human bodies that potentially will be correlated with health diseases.

[0008] There is an increasing demand for personal care compositions having more natural products. These changes may be driven, for example, by ecological concerns regarding the sourcing of raw material, or by health concerns regarding potential side effects of ingredients such as polyacrylates and their derivatives.

[0009] In another example, WO 2023 / 073590 describes skin care emulsion with appropriate viscosity comprising a combination of C20-24 fatty alcohol described as a natural butter, at least one polysaccharide and a succinoglycan. However, to use structuring long carbon chain alcohols, notably having above 20 carbons, in compositions, the process requires a complex process involving heating to promote its melting and posterior cooling of the resulting composition, which can be problematic and costly.

[0010] Another patent application, WO 2020 / 130153, describes stable cosmetic compositions having a specific combination of three polysaccharides and a metal salt. However, the use of metal salt and the resulting ionic forces included with its use can cause difficulties at the stabilization of formulation, with the additional step in the process of preparation involved with the addition of such salts.

[0011] Therefore, there is a need to develop personal care compositions having not only excellent viscosity properties using natural products, but also being produced by a simple and cost effective process.

[0012] SUMMARY OF THE INVENTION

[0013] The present invention relates to a personal care composition comprising a combination of one or more galactomannan and succinoglycan and free of C20-24 fatty alcohol and a metal salt.

[0014] Notably, the galactomannan is a galactomannan or a galactomannan derivative.

[0015] Furthermore, the invention relates to a process for preparing a personal care composition as defined above, wherein the process comprises the preparation of an aqueous phase or a gel phase and an oil phase and combining both phases, under stirring, to obtain an emulsion.

[0016] Advantageously, the process according to the present invention does not necessarily need to involve heating or cooling steps to obtain the emulsion.

[0017] It has been demonstrated that by using the combination of one or more sustainable polysaccharides as galactomannan and succinoglycan in the absence of a C20-24 fatty alcohol and a metal salt, not only delivers formulation within excellent viscosity range but also allows a simple and cost effective preparation process.

[0018] Advantageously, the personal care composition resulted in a stable emulsion having excellent performance in personal care compositions, notably for skin care but nothing excluding usage in the hair care field. Then, the invention also relates to the use of a personal care composition as defined above, for improving or maintaining the quality of skin or hair, comprising applying the composition according to any one of Claims 1 to 8 to the skin or hair and optionally rinsing off said composition.

[0019] Finally, the present invention relates to a method of increasing the viscosity of a personal care composition, comprising adding a combination of one or more galactomannan and succinoglycan in the absence of long chain fatty alcohols and a metal salt.

[0020] DETAILED DESCRIPTION OF THE INVENTION

[0021] Before the issues of the invention are described in detail, the following should be considered:

[0022] The term and phrases “invention,” “present invention”, and similar terms and phrases as used herein are non-limiting and are not intended to limit the present subject matter to any single embodiment, but rather encompasses all possible embodiments as described.

[0023] Throughout the description, including the claims, the term “a” and the phrase “at least one”, “one or more” are synonymous, and likewise, the phrase "comprising one" or “comprising a" should be understood as being synonymous with the term "comprising at least one," unless otherwise specified. Additionally, "between" should be understood as being inclusive of the limits. Further, throughout the description, including the claims, the terms “comprising” and “having” can be used interchangeably, and should be understood as being synonymous.

[0024] As used herein, “weight percent,” “wt%,” “percent by weight,” “% by weight,” and variations thereof refer to the concentration of a substance as the weight of that substance divided by the total weight of the composition and multiplied by 100.

[0025] It should be noted that in specifying any range of concentration, weight ratio or amount, any particular upper concentration, weight ratio or amount can be associated with any particular lower concentration, weight ratio or amount, respectively.

[0026] Throughout the description, including the claims, all process terms should be understood as being synonymous with the term method. Should the disclosure of any patents, patent applications, and publications which are incorporated herein by reference conflict with the description of the present application to the extent that it may render a term unclear, the present description shall take precedence.

[0027] Personal Care Compositions

[0028] The personal care composition of the present invention comprises the combination of one or more galactomannan and succinoglycan and free of long chain fatty alcohol and a metal salt.

[0029] The term “personal care” is intended to denote both personal care compositions or dermatological preparations. Personal care compositions or dermatological preparations encompass the support of daily personal living tasks and private higiene. Both terms should be understood as synonymous for the purpose of the invention.

[0030] A variety of galactomannans can be used for the present invention. The expression "galactomannan" is understood to cover galactomannan and galactomannan derivatives, so both expressions are equivalent and can be replaced therewith. A galactomannan is a polymer consisting mainly of the monosaccharides mannose and galactose. The mannose-elements form a chain consisting of many hundreds of (1 -4)-[3-D-mannopyranosyl-residues, with 1-6 linked a-D- galactopyranosyl-residues at varying distances, dependent on the plant of origin. The galactomannans of the present application can be obtained from numerous sources. Such sources include guar gum, guar splits, locust bean gum, fenugreek gum, cassia gum, carubin, tara gum, flame tree gum and carrageenan gum. Naturally occurring galactomannans can be extracted from the endosperm of the respective seeds. Additionally, it is contemplated that the galactomannans of the present application can also be obtained by various synthetic routes known to a person skilled in the pertinent art or can be obtained by chemical modification of naturally occurring galactomannans.

[0031] In the present application, “native galactomannan” or “galactomannan” designates macromolecular chains of the galactomannan type, derived from endosperm of numerous sources, not having been subjected to chemical modification by the grafting of chemical groups. Processes for making derivatives of galactomannans are generally known. Typically, galactomannan are reacted with one or more derivatizing agents under appropriate reaction conditions to produce a galactomannan having the desired substituent groups. Notably, each galactose and mannose unit in the native galactomannans have hydroxyl groups as substituent groups that can be chemically modified to functionalize the galactomannan. In this respect, the galactomannans can be functionalized using a number of derivatizing agents. Suitable derivatizing reagents are commercially available and typically contain a reactive functional group, such as an epoxy group, a chlorohydrin group, or an ethylenically unsaturated group, and at least one other substituent group, such as a cationic, nonionic or anionic substituent group, or a precursor of such a substituent group per molecule, wherein substituent group may be linked to the reactive functional group of the derivatizing agent by bivalent linking group, such as an alkylene or oxyalkylene group.

[0032] Suitable cationic substituent groups include primary, secondary, or tertiary amino groups or quaternary ammonium, sulfonium, or phosphinium groups. Suitable nonionic substituent groups include hydroxyalkyl groups, such as hydroxypropyl groups, hydroxyethyl groups and hydroxybutyl groups. Suitable anionic groups include carboxyalkyl groups, such as carboxymethyl groups. The cationic, nonionic and / or anionic substituent groups may be introduced to the galactomannan chains via a series of reactions or by simultaneous reactions with the respective appropriate derivatizing agents.

[0033] The galactomannan may be treated with a crosslinking agent, such for example, borax (sodium tetraborate) is commonly used as a processing aid in the reaction step of the water-splits process to partially crosslink the surface of the galactomannan and thereby reduces the amount of water absorbed by the galactomannan during processing. Other crosslinkers, such as, for example, glyoxal or titanate compounds, are known.

[0034] According to one embodiment, the one or more galactomannan is a native galactomannan or a galactomannan derivative selected from carboxymethyl galactomannan, carboxymethylhydroxypropyl galactomannan, cationic hydroxypropyl galactomannan, hydroxyethyl galactomannan, hydroxypropyl galactomannan, hydroxybutyl galactomannan, carboxylpropyl galactomannan, carboxybutyl galactomannan and mixtures thereof.

[0035] Particularly, the total amount of the galactomannan in the composition of the invention is from 0.1 to 5% by weight, preferably from 0.5% to 2% by weight based on the total weight of the composition.

[0036] It may be especially galactomannan having an average molecular weight (Mw) of 3,000,000 g / mol or lower. Preferably, the galactomannan may have an average molecular weight of between 5,000 g / mol to 2,000,000 g / mol, more preferably, the galactomannan may have an average molecular weight of between 500,000 g / mol to 2,000,000 g / mol.

[0037] As used herein, the “average molecular weight” of the galactomannan means the average molecular weight of said galactomannan.

[0038] The average molecular weight of the galactomannan may be measured by GPC (Gel Permeation Chromatography). Measurements may be carried out using Shodex OH Pak columns and Agilent Refractive Index Detector, for instance with the conditions detailed in the examples.

[0039] The galactomannan according to the present invention may be prepared by depolymerizing natural galactomannan that have high molecular weight, so as to “split” the galactomannan polymers to desired sizes. Various depolymerisation methods are well known in the art and may be used for the present invention, such as treatment by using peroxo compound (e.g., hydrogen peroxide) and irradiation. Examples of such methods are disclosed in U.S. Pat. No. 4,547,571 , U.S. Pat. No. 6,383,344 and U.S. Pat. No. 7,259,192. Various methods for cross-linking galactomannans are also known, see for example U.S. Pat. No. 5,532,350 and U.S. Pat. No. 5,801 ,116. Alternatively, low molecular weight galactomannan can be obtained by harvesting seeds, which are still at an early developmental stage such that the harvested seeds contain low molecular weight natural galactomannans.

[0040] In another embodiment, the one or more galactomannan is a derivatized galactomannan derivative that is substituted at one or more sites of the polysaccharide with a substituent group that is independently selected for each site from the group consisting of cationic substituent groups, nonionic substituent groups, and anionic substituent groups. According to a preferred embodiment, the one or more galactomannan of the composition of the present invention is one or more galactomannan derivative, preferably derivatized galactomannan selected from a cationic galactomannan, a nonionic galactomannan, an anionic galactomannan and mixtures thereof.

[0041] In a particular preferred embodiment, the derivatized galactomannans are chosen from the group consisting of: hydroxypropyl trimethylammonium galactomannan, hydroxypropyl lauryldimethylammonium galactomannan, hydroxypropyl stearyldimethylammonium galactomannan, hydroxypropyl galactomannan, carboxymethyl galactomannan, galactomannan with hydroxypropyl groups and hydroxypropyl trimethylammonium groups, galactomannan with carboxymethyl hydroxypropyl groups and mixtures thereof.

[0042] The amount of derivatizing groups in a derivatized polysaccharide polymer may be characterized by the degree of substitution of the derivatized polysaccharide polymer or the molar substitution of the derivatized polysaccharide polymer.

[0043] As used herein, the terminology “degree of substitution” in reference to a given type of derivatizing group and a given polysaccharide polymer means the number of the average number of such derivatizing groups attached to each monomeric unit of the polysaccharide polymer. In one embodiment, the derivatized galactomannan derivative exhibits a total degree of substitution (“DST”) of from 0.001 to 3.0, wherein:

[0044] DST is the sum of the DS for cationic substituent groups (“DScationic”), the DS for nonionic substituent groups (“DSnonionic”) and the DS for anionic substituent groups (“DSanionic”),

[0045] DScationic is from 0 to 3, more typically from 0.001 to 2.0, and even more typically from 0.001 to 1.0,

[0046] DSnonionic is from 0 to 3.0, more typically from 0.001 to 2.5, and even more typically from 0.001 to 1.0, and

[0047] DSanionic is from 0 to 3.0, more typically from 0.001 to 2.0.

[0048] According to an embodiment of the invention, the degree of substitution of the derivatized galactomannan is comprised between 0.01 and 3.0, for instance between 0.05 and 1 .5. As used herein, the term “molar substitution” or “ms” refers to the number of moles of derivatizing groups per moles of monosaccharide units of the galactomannan. The molar substitution can be determined by the Zeisel-GC method. The molar substitution utilized by the present invention is typically in the range of from 0.001 to 3.

[0049] The average molecular weight of the derivatized galactomannan of the invention may be measured for instance by SEC-MALS or by using gel permeation chromatography.

[0050] In a particular embodiment, the amount of one or more suspending agents ranges from 0.05 to 5%, preferably from 0.1 to 2% by weight based on the total weight of the composition.

[0051] The personal composition of the present invention also contains succinoglycan.

[0052] In one embodiment, the amount of succinoglycan in the composition is from 0.05 to 5 weight %, preferably from 0.5 to 3 weight % based on the total weight of the composition.

[0053] Indeed, it was observed, totally unexpected, that the use of a combination of a galactomannan, notably a galactomannan derivative, and succinoglycan was able to allow in a significant way to vary the viscosity of compositions, in a way that no additional thickener is needed.

[0054] The viscosity of personal care composition may be measured by rotational instruments such as Plate-Peltier or Coaxial Cylinder rheometer and / or Brookfield viscometer. The measurements were conducted as described in the examples.

[0055] Typically, the viscosity of the compositions of the invention are within 100 to 2,000,000 mPa.s range. In a preferred embodiment, the viscosity of the compositions is between 100,000 and 1 ,500,000 mPa.s.

[0056] In one embodiment, the personal care composition of the invention may be a variety of compositions and personal care applications. Depending on the composition and application, in addition to the combination of one or more galactomannan and succinoglycan, the composition may optionally contain various other convention components and additives known in the respective art. For example, the compositions having the combination of one or more galactomannan and succinoglycan can further optionally have one or more emulsifier, emollient, moisturizer, skin protectant, binder, chelating agent, deodorant, pest repellant, odoriferous material, antimicrobial agent, antifungal agent, antibiotic, antiperspirant agent, an oil, opacifying and pearlescent agent, preservative, propellant, spreading agent, exfoliant, keratolytic agent, vitamin, sunscreen agent, artificial tanning accelerator, ultraviolet light absorber, pH adjusting agent, botanical, skin bleaching agent dye, inorganic particles, buffers, oxidizing agents, reducing agent, rheology modifier, pigment, anti-inflammatory agent, particulate, micro abrasive, abrasive, surfactant, film-former, disinfectant, hair conditioning agent, hair fixative, insecticide, fungicide, adhesive, absorbent, colorant, humectant, topical anesthetic, fragrance, fragrance solubilizer, and combinations thereof.

[0057] Advantageously, the compositions of the invention have excellent stability even in the absence of an emulsifier.

[0058] In preferred embodiments, the compositions of the present invention can have, in addition to the combination of one or more galactomannan and succinoglycan, emulsifiers selected from glycerol or polyglycerol esters, fatty alcohols having less than 20 carbon chain, fatty alcohol ethoxylates, fatty acid glycerol esters, sorbitan esters, fatty, quaternary ammonium compounds, fatty acid salts, alkyl sulfates, glycolipids, silicones, betaines, alcohol, fatty alcohol polyethers and combinations thereof.

[0059] Typically, personal care compositions contain from 0.05 percent to about 10, preferably from 0.5 percent to 5 percent of an emulsifier(s).

[0060] In still another preferred embodiment, the compositions of the present invention can have, in addition to the combination of one or more galactomannan and succinoglycan, one or more oil selected from a mineral oil, a vegetable oil, an animal oil, a synthetic oil, a silicone oil, hydrocarbons, C1 -C50 esters, C1 -C50 ethers and mixtures thereof.

[0061] As examples of vegetable oils, mention may be made of, for example, linseed oil, camellia oil, macadamia nut oil, corn oil, mink oil, olive oil, avocado oil, sasanqua oil, castor oil, palm kernel oil, coconut oil, rice bran oil, babassu oil, macauba oil, carnauba oil, licuri oil, cotton oil, cameline oil, soy bean oil, peanut oil, mango oil, crambe oil, sunfflower oil, jojoba oil, sunflower oil, almond oil, rapeseed oil, sesame oil, soybean oil, peanut oil, buriti oil, pracaxi oil, andiroba oil, bacaba oil, passionfruit oil, pequi oil, grapeseed oil and mixtures thereof.

[0062] Suitable animal oil may be made of, for example, squalene and squalane.

[0063] As examples of synthetic oils, mention may be made of alkane oils such as isododecane and isohexadecane, ester oils, ether oils, and artificial triglycerides.

[0064] Suitable silicone oils may be made of, for example, linear organopolysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, and the like; cyclic organopolysiloxanes such as cyclohexasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, and the like; and mixtures thereof.

[0065] Suitable hydrocarbons may be obtained from natural, petrol or synthetic sources, for instance decane, dodecane, hexadecane, isododecane, n-undecane, n- tridecane, isododecane, isohexadecane, isoeicosane, hemisqualane, isoparaffin, octane, C9-C12 alkanes and mixtures thereof.

[0066] Suitable C1 -C50 esters and / or C1 -C50 ethers may be mono or poly C1 -C50 esters and / or mono or poly C1 -C50 ethers obtained by reaction of alcohols containing less than 25 carbon chain and carboxylic acids from natural or synthetic origins, fatty alcohol or glycerides.

[0067] Typically, personal care compositions contain up to 30 percent of an oil(s) but in certain categories can contain from 60 percent to 80 percent.

[0068] The personal care compositions of the present invention may be a variety of personal care applications. For example, in certain embodiments, the personal care compositions can be skin care and hair care compositions, such as but not limited to body washes, soaps, facial washes, make-up, lotions, skin creams, skin conditioners, balms, hair gels, sunscreen compositions, shampoos, hair conditioners, and similar compositions. Preferably, the personal care composition is a skin care composition.

[0069] Process of Preparation, use and method

[0070] In another aspect of the present invention, it is provided a process for preparing a personal care composition as defined above, wherein the process comprises the preparation of an aqueous phase or a gel phase and an oil phase and combining both phases, under stirring, to obtain an emulsion. Advantageously, the preparation of the emulsions of the present invention may be made by emulsification according to widely described on emulsions state- of-art, and can be driven at room temperature condition or heating conditions under stirring to obtain final aesthetics desired.

[0071] Particularly, the combination of one or more galactomannans and succinoglycan may be added before addition of the other components in the personal care composition. Alternatively, the addition of the combination may be made together with other components during preparation of the emulsion or even may be added after the mixture of all the components during the emulsion preparation.

[0072] Typically, the process for preparing an aqueous phase, a gel phase and an oil phase as disclosed herein refers to all conventional methods, which are known in the art. That is, the aqueous phase can be prepared by combination of aqueous ingredients, preferably water with optional various other convention components and additives, or including the thickener agents, such as one or more galactomannan and succinoglycan to form a gel phase. Additionally, the preparation of the oil phase can be performed directly by mixing oily components or including the thickener agents, such as one or more galactomannan and succinoglycan to form the oil phase having dispersed polymers galactomannan and succinoglycan. Then, the combination of the two phases can produce an emulsion. Alternatively, the combination of one or more galactomannan and succinoglycan can be added after the emulsion preparation. Optionally, the combination of one or more galactomannan and succinoglycan is added in the system to prepare the emulsion pre-mixed in an alcohol solvent.

[0073] In one embodiment, the alcohol solvent may be mono or polyalcohols (containing 1 to 12 carbon carbon) selected from ethanol, propanol, hexanol, aliphatic polyalcohols such as ethylene glycol, propylene glycol, hexylene glycol, glycerol, sorbitol, pentaerythritol, polyalkylene glycols with a molecular weight of less than 1000 g / mol or mixtures thereof.

[0074] In a preferred embodiment, the alcohol solvent is chosen from aliphatic polyalcohols consisting of glycerol, hexylene glycol and propylene glycol. In some aspects, the oil phase may be prepared by simply combining the oily components of the composition, for example but not limited to oils and emulsifiers described above.

[0075] Advantageously, the process for preparing the emulsion of the invention does not involve any heating or cooling of the components to prepare the gel and / or oil phases as well as the emulsion. Particularly, the components used to prepare the emulsion are semi-solids and can be combined in an easy and non-costly way and are able to produce emulsions with a wide range of viscosity. Alternatively, the process for preparing the emulsion of the invention may include some step of heating and / or cooling.

[0076] In one embodiment of the process, the amount of water in the aqueous or gel phase is 100% of the water in the emulsion composition or is less than 100% of the water in the emulsion composition.

[0077] Particularly, depending on the viscosity needed on the final emulsion, the water added during the preparation of the gel phase can be dosed. Optionally, additional water can be added after the combination of the aqueous or gel phase and the oil phase, as a form of adjusting the viscosity of the resulting emulsion.

[0078] Alternatively, various other convention components and additives known in the respective art may be added at the resulting emulsion after its preparation.

[0079] Advantageously, the personal care composition of the present invention does not contain any other thickening agent besides the combination of one or more galactomannan and succinoglycan.

[0080] The invention also concerns the use of a personal care composition as defined above, for improving or maintaining the quality of skin or hair, by applying the composition of the invention to the skin or hair and optionally rinsing off said composition.

[0081] As used herein, the term “quality” refers to a skin with good properties such as tone, texture, moisture, firmness and smoothness and also to a hair with good properties such as smooth, silky, and with natural shine.

[0082] Suitable use for of improving or maintaining the quality of skin provided by the application of the composition containing a combination of the invention may be such as cleansing, moisturization, regulating the signs of anti-aging (e.g., reducing the appearance of wrinkles and coarse deep lines, fine lines, crevices, bumps, and large pores), hiding imperfections, to reduce the oiliness / shine associated with sebum or to alter the color and appearance of skin.

[0083] Suitable use for improving or maintaining the quality of hair provided by the application of the composition containing a combination of the invention may include hair hydration, straightening or hair styling.

[0084] The personal care composition of the invention can be applied as a semi-solid such as a cream or lotion, or as a paste.

[0085] Advantageously, the combination of one or more galactomannan and succinoglycan promotes enhancement of the viscosity of the resulting composition.

[0086] Finally, the invention also concerns the method of increasing the viscosity of a personal care composition, by adding a combination of one or more galactomannan and succinoglycan in the absence of long chain fatty alcohol and a metal salt.

[0087] The above description of the method of the invention also applies to the use according to the invention.

[0088] Should the disclosure of any patents, patent applications, and publications which are incorporated herein by reference conflict with the description of the present application to the extent that it may render a term unclear, the present description shall take precedence.

[0089] The examples of implementation of the invention below are given purely by way of illustration and shall not be interpreted at limiting the scope thereof.

[0090] EXAMPLES

[0091] The following examples are illustrative of preferred embodiments of personal care compositions and methods for making the same, and are not intended to be limitations thereon. All composition percentages are based on totals equal to 100% by weight, unless otherwise specified.

[0092] All materials used in the following examples are commercially available.

[0093] A series of personal care compositions were performed according to the present invention varying oil phase percentage and / or polymers (galactomannans and / or succinoglycan). The compositions obtained (S1 to S6) are summarized at TABLE 1. Example 1 - Preparation of personal care compositions:

[0094] S1 - In a glass watch, 1.60 g of the galactomannan (Jaguar® HP 105) and 3.10 g of succinoglycan (Rheozan® SH) were mixed with 8.0 g of glycerin, at room temperature. Then, half of water (79.45 g) was weighted in a beaker followed by the addition of the mixture of galactomannan, succinoglycan and glycerin, under stirring at 300 rpm using a four-blade stirrer and raising to 1000 rpm until homogeneity during 10 min. The gel phase is obtained.

[0095] In parallel, the oil phase is prepared by weighting the other half of water (79.45 g) and mixing to 6.00 g of the emulsifier (Alkamuls ® SE 55) and 10.00 g of the oils (4 g of avocado oil, 4 g of sunflower oil and 2 g of triglyceride capric / caprylic oil) under stirring at 300 rpm for 5 min, until achieve homogeneity.

[0096] The oil phase is mixed to the gel phase at 1000 rpm until full homogeneity. After this, stirring was kept for 10 minutes. At this point, the phenoxyethanol and the tocopherol were added and the composition was stirred for 10 min. Then, composition S1 (200 g) was obtained.

[0097] Following the protocol listed above, different compositions S2 to S6 were prepared, of which the characteristics / properties are listed in TABLE 1 below.

[0098] TABLE 1 : Personal Care Compositions having a combination of galactomannans and succinoglycan.

[0099] Example 2 - Viscosity and Stability evaluation

[0100] The viscosity measurement of the personal case compositions was taken using a Brookfield viscometer, LV-DV II model, spindle 04 at 0.3 rpm from 200 g of sample equilibrated at 25 °C.

[0101] The pH determination was carried out at 25 °C using a Digimed pHmeter DM- 22.

[0102] The stability of the personal care compositions obtained in Example 1 was aged in accelerated conditions at 25 °C and 45 °C in the climate chambers for 3 months.

[0103] The results obtained are shown in TABLE 2.

[0104] TABLE 2: Results of viscosity and stability of compositions As demonstrated by TABLE 2, the personal care compositions S1 to S6 shown low to high viscosity in combination to the absence of stability failures such as phase separation, color changes, odor release or bubbling (gas release) after aging. Therefore, it was demonstrated that personal care compositions having a combination of one or more galactomannan and succinoglycan and free of fatty alcohols and metal salt present good stability and versatility to be prepared in a range from low to high viscosity.

Claims

CLAIMS1. A personal care composition comprising a combination of one or more galactomannan and succinoglycan and free of C20-24 fatty alcohol and a metal salt.

2. The personal care composition of claim 1 , wherein the one or more galactomannan is a native galactomannan or a galactomannan derivative selected from carboxymethyl galactomannan, carboxymethyl hydroxypropyl galactomannan, cationic hydroxypropyl galactomannan, hydroxyethyl galactomannan, hydroxypropyl galactomannan, hydroxybutyl galactomannan, carboxypropyl galactomannan, carboxybutyl galactomannan and mixtures thereof.

3. The personal care composition of claims 1 or 2, wherein the total amount of the galactomannan in the composition is from 0.1 to 5% by weight, preferably from 0.5% to 2% by weight based on the total weight of the composition.

4. The personal care composition of any one of the preceding claims, wherein the molecular weight of the galactomannan is 3,000,000 g / mol or lower, preferably ranges from 5,000 g / mol to 2,000,000 g / mol, more preferably ranges from 500,000 g / mol to 1 ,000,000 g / mol.

5. The personal care composition of any one of the preceding claims, wherein the amount of succinoglycan in the composition is from 0.05 to 5 weight %, preferably from 0.5 to 3 weight % based on the total weight of the composition.

6. The personal care composition of any one of the preceding claims, wherein the combination provides viscosity in a range between 100 to 2,000,000 mPa.s, preferably 100,000 and 1 ,500,000 mPa.s.

7. The personal care composition of any one of the preceding claims, wherein the composition further optionally comprises one or more emulsifier, emollient, moisturizer, skin protectant, binder, chelating agent, deodorant, pest repellant, odoriferous material, antimicrobial agent, antifungal agent, antibiotic, antiperspirantagent, an oil, opacifying and pearlescing agent, preservative, propellant, spreading agent, exfoliant, keratolytic agent, vitamin, sunscreen agent, artificial tanning accelerator, ultraviolet light absorber, pH adjusting agent, botanical, skin bleaching agent dye, inorganic particles, buffers, oxidizing agents, reducing agent, rheology modifier, pigment, anti-inflammatory agent, particulate, microabrasive, abrasive, surfactant, film-former, disinfectant, hair conditioning agent, hair fixative, insecticide, fungicide, adhesive, absorbent, colorant, humectant, topical anesthetic, fragrance, fragrance solubilizer, and combinations thereof.

8. The personal care composition of any one of the preceding claims, wherein the emulsifier is selected from glycerol or polyglycerol esters, fatty alcohols having less than 20 carbon chain, fatty alcohol ethoxylates, fatty acid glycerol esters, sorbitan esters, fatty, quaternary ammonium compounds, fatty acid salts, alkyl sulfates, glycolipids, silicones, betaines, alcohol, fatty alcohol polyethers and combinations thereof.

9. The personal care composition of any one of the preceding claims, wherein the oil is selected from a mineral oil, a vegetable oil, an animal oil, a synthetic oil, a silicone oil, hydrocarbons, C1-C50 esters, C1-C50 ethers and mixtures thereof.

10. The personal care composition of any of the preceding claims, wherein the composition is a skin care or a hair care composition, preferably a skin care composition.

11. A process for preparing a personal care composition as defined in any one of the claims 1 to 10, wherein the process comprises the preparation of an aqueous phase or a gel phase and an oil phase and combining both phases, under stirring, to obtain an emulsion.

12. The process of claim 11 , wherein the combination of one or more galactomannan and succinoglycan is added, optionally pre-mixed in an alcohol solvent, in the aqueous phase to obtain a gel phase, in the oil phase or in theemulsion after the combination of the aqueous phase or the gel phase and the oil phase.

13. The process of claims 11 or 12, wherein the amount of water in the aqueous or gel phase is 100% of the water in the emulsion composition or is less than 100% of the water in the emulsion composition.

14. The use of a personal care composition as defined in any one of the claims 1 to10 for improving or maintaining the quality of skin or hair, comprising applying the composition according to any one of Claims 1 to 8 to the skin or hair and optionally rinsing off said composition.

15. A method of increasing the viscosity of a personal care composition, comprising adding a combination of one or more galactomannan and succinoglycan in the absence of C20-24 fatty alcohol and a metal salt.

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