Skincare compositions comprising glycerin

Abstract

Provided are skincare compositions suitable for moisturizing the skin, and particularly compositions comprising relatively high amounts of glycerin. Exemplary skincare compositions may comprise: a. greater than 40% of one or more humectants by total weight of the composition; b. a mixture of esters of glycerin; c. one or more emollients; d. one or more skin conditioners; and e. water.

Description

[0001] SKINCARE COMPOSITIONS COMPRISING GLYCERIN

[0002] FIELD

[0003] The present invention relates to compositions suitable for use to moisturize the skin. More specifically, the present invention relates to compositions comprising relatively high levels of a humectant.

[0004] BACKGROUND

[0005] Moisturizers are mixtures of chemical agents specially designed to make the external layers of the skin or hair softer. Personal care compositions having moisturizing properties are known. Consumers expect such compositions to satisfy a range of requirements. Apart from the skin / hair-care effects which determine the intended application, value is placed on such diverse parameters as dermatological compatibility, appearance, sensory impression, stability in storage and ease of use. For example, glycerin is a humectant.

[0006] In order to reduce the amount of water lost to the external environment a traditional practice comprises applying a residual film of a composition including an occlusive agent or humectant to the skin's surface. An occlusive agent leaves a residual film which is a mechanical barrier preventing water from evaporating from the Stratum Corneum and from passing from the external environment through to the skin. A humectant however is a hygroscopic material which acts like a sponge, holding water close to the skin and permitting a higher level of water to be maintained in the Stratum Corneum.

[0007] Many humectants have been proposed in the past in a wide variety of skin care products. Glycerin is one known humectant. However, glycerin at higher concentrations has been known to provide undesirable sensory properties (e.g., too tacky) and can be difficult to formulate with.

[0008] Therefore there is an ongoing need for skincare compositions which provide moisturization but also maintain other desirable properties.

[0009] SUMMARY OF THE INVENTION

[0010] One aspect of the invention pertains to a skincare composition comprising: a. greater than 40% of one or more humectants by total weight of the composition; b. a mixture of esters of glycerin; c. one or more emollients; d. one or more skin conditioners; and e. water.

[0011] In one or more embodiments, the composition is essentially free of isocetyl alcohol. In some embodiments, the humectant comprises glycerin. In one or more embodiments, the glycerin is present from about 41 to about 50 wt.% by total weight of the composition. In some embodiments, the one or more esters of glycerin comprises triesters of glycerin. In one or more embodiments, the one or more triesters of glycerin comprises caprylic / capric triglyceride. In some embodiments, the one or more esters of glycerin is present in an amount of about 1 wt.-% to about 12 wt.-%. In one or more embodiments, the one or more emollients is present in an amount of about 1 wt.-% to about 10 wt.-%. In some embodiments, the one or more emollients is selected from the group consisting of C12-C15 alkyl benzoate; cyclomethicone, dimethicone, and mixtures thereof. In one or more embodiments, the one or more emollients comprises dimethicone. In some embodiments, the one or more skin conditioners are selected from the group consisting of glycols, cationic surfactants, and combinations thereof. In one or more embodiments, the one or more skin conditioners comprises caprylyl glycol. In some embodiments, the composition further comprises a processed oat ingredient. In one or more embodiments, the water is present in an amount of less than about 30 wt.% by total weight of the composition.

[0012] Another aspect of the invention pertains to a method of moisturizing skin, the method comprising applying to the skin any of the skincare compositions described herein.

[0013] Another aspect of the invention pertains to a skincare composition comprising: a. greater than about 40 wt.% glycerin by total weight of the composition; b. from about 1 to about 10 wt.% caprylic / capric triglyceride by total weight of the composition; c. from about 1 wt.-% to about 10 wt.-% of dimethicone by total weight of the composition; d. from about 0.01 wt.-% to about 3 wt.-% of caprylyl glycol by total weight of the composition; e. from about 0.01 wt.-% to about 3 wt.-% of a processed oat ingredient by total weight of the composition; and f. from about 25 wt.% to about 35 wt.% of water. In one or more embodiments, the water is present in an amount of about 25 to about 32 wt.- %. In some embodiments, the glycerin is present in an amount of about 42 to about 50 wt.- %. In one or more embodiments, the composition further comprises one or more auxiliary agents selected from the group consisting of rheology modifiers, emulsifiers, preservatives, fragrances, and combinations thereof.

[0014] These and other features and advantages of the present invention will be readily apparent from the following detailed description of the invention.

[0015] DETAILED DESCRIPTION

[0016] As used herein, “cosmetically / dermatologically acceptable” means suitable for use in contact with tissues (e.g., the skin or hair) without undue toxicity, incompatibility, instability, irritation, and / or allergic response, and the like.

[0017] As used herein, the term “safe and effective amount” means an amount sufficient to induce the desired effect, but low enough to avoid serious side effects. The safe and effective amount of the compound, extract, or composition will vary with, e.g., the age, health and environmental exposure of the end user, the duration and nature of the treatment, the specific extract, ingredient, or composition employed, the particular pharmaceutically-acceptable carrier utilized, and like factors.

[0018] As used herein, “essentially free” or “substantially free” of an ingredient means containing less than 0.1 weight percent, or less than 0.01 weight percent, or none of an ingredient.

[0019] To provide a more concise description, some of the quantitative expressions given herein are not qualified with the term “about”. It is understood that whether the term “about” is used explicitly or not, every quantity given herein is meant to refer to the actual given value, and it is also meant to refer to the approximation to such given value that would reasonably be inferred based on the ordinary skill in the art, including approximations due to the experimental and / or measurement conditions for such given value.

[0020] To provide a more concise description, some of the quantitative expressions herein are recited as a range from about amount X to about amount Y. It is understood that wherein a range is recited, the range is not limited to the recited upper and lower bounds, but rather includes the full range from about amount X through about amount Y, or any amount or range therein. Accordingly, one aspect of the invention pertains to a skincare composition comprising: a. greater than 40% of one or more humectants by total weight of the composition; b. a mixture of esters of glycerin; c. one or more emollients; d. one or more skin conditioners; and e. water.

[0021] It has been surprisingly discovered that such compositions are microbiologically stable, while still providing a relatively high amount of humectant, particularly glycerin.

[0022] Humectant

[0023] Any of a variety of commercially available humectants, which are capable of providing moisturization properties to the personal cleansing composition, are suitable for use in the present invention. Examples of suitable humectants nonexclusively include: 1) water soluble liquid polyols selected from the group comprising glycerin, propylene glycol, hexylene glycol, butylene glycol, dipropylene glycol. In particular embodiments, the humectant comprises glycerin.

[0024] The compositions described herein advantageously contain relatively high levels of glycerin. In one or more embodiments, the glycerin is present in an amount of greater than about 41 wt.% by total weight of the composition. In some embodiments, the glycerin is present in an amount ranging from about 41, 42, 43, 44, 45, 46, 47, 48. 49 or 50 wt.% to about 50, 51, 52, 53, 54, 55, or 60 wt.% by total weight of the composition.

[0025] Ester of Glycerin

[0026] The compositions described herein may comprise one or more esters of glycerin, particularly triesters of glycerin. In further embodiments, the one or more triesters of glycerin comprises caprylic / capric triglyceride.

[0027] The one or more esters of glycerin may be present in an amount of about 0.5, 1, 2, 3, 4, 5, 6, or 7 wt.-% to about 7, 8, 9, 10, 11 or 12 wt.-% by weight of the total composition. In further embodiments, the one or more esters of glycerin (e.g., caprylic / capric triglyceride) are present from about 5 to about 9 wt.% or about 7 wt.% by total weight of the composition.

[0028] While not wishing to be bound to any particular theory, it is thought the presence of the esters of glycerin (e.g., caprylic / capric triglyceride) prevent the growth of undesirable pathogens. In particular, although isocetyl alcohol has been previously used in similar compositions, there are challenges where the glycerin content is high (and thus the water phase is relatively low). Preservatives are thought to preferentially leave the water phase and enter the oil phase when isocetyl alcohol is present, exposing the water phase to fail various microbiology testing. With the addition of the one or more esters of glycerin (e.g., caprylic / capric triglyceride), the compsoition does not see growth of the undesired pathogens. Accordingly, in one or more embodiments, the composition is essentially free of isocetyl alcohol.

[0029] Emollient

[0030] What is meant by an emollient is a compound that helps to maintain the soft, smooth, and pliable appearance of the skin (e.g., by remaining on the skin surface or in the stratum corneum to act as a lubricant). Examples of suitable emollients include those found in Chapter 35, pages 399-415 (Skin Feel Agents, by G Zocchi) in Handbook of Cosmetic Science and Technology (edited by A. Barel, M. Paye and H. Maibach, Published in 2001 by Marcel Dekker, Inc New York, NY), and include, but are not limited to, dimethicone, petrolatum, hexyldecyl stearate, glyceryl oleate, and plant, nut, and vegetable oils such as macadamia nut oil, rice bran oil, grape seed oil, palm oil, prim rose oil, hydrogenates peanut oil, and avocado oil.

[0031] In one or more embodiments, the emollient comprises one or more emollients is selected from the group consisting of C12-C15 alkyl benzoate; cyclomethicone, dimethicone, and mixtures thereof. In further embodiments, the emollient comprises dimethicone.

[0032] The one or more emollients may be present in an amount of about 0.5, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 wt.-% to about 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 or 15 wt.-% by total weight of the composition.

[0033] Skin Conditioner

[0034] The compositions described herein may contain one or more ingredients which provide a conditioning effect on the skin. In one or more embodiments, the one or more skin conditioners are selected from the group consisting of glycols, cationic surfactants, and combinations thereof. In further embodiments, the one or more skin conditioners comprises caprylyl glycol.

[0035] Processed Oat Ingredient As used herein, the term “processed oat ingredient” refers to an ingredient that is typically derived from a part of the oat plant Avena saliva). Said ingredient can be either a processing (e.g., an extract, milling, fermenting) of one or more parts of the oat plant (e.g., grain, leaf, stem, seed)or can be a molecule found in the oat plant (e.g., beta-glucan, flavonoids, avenanthr amides, lipids, peptides, etc.). The definition is intended to cover processed oat ingredients which are derived from other sources other than oat (e.g., from another plant or chemically synthesized), but are otherwise associated with oat. In one or more embodiments, the processed oat ingredient is selected from the group consisting of oat extract, colloidal oatmeal, oat flour, oat bran, oat protein, oat peptide, oat oil, fermented oat, avenanthramides, beta-glucan, modified oat grain material (e.g., chemically, enzymatically-, microorganism-modified), and combinations thereof. As used herein, “colloidal oatmeal” means the powder resulting from the grinding and further processing of whole oat grain meeting United States Standards for Number 1 or Number 2 oats. The colloidal oatmeal has a particle size distribution as follows: not more than 3 percent of the total particles exceed 150 micrometers in size and not more than 20 percent of the total particles exceed 75 micrometers in size. Examples of suitable colloidal oatmeals include, but are not limited to, “Tech-0” available from the Beacon Corporation and colloidal oatmeals available from Quaker. In one or more embodiments, the processed oat ingredient comprises oat extract, colloidal oatmeal, and oat oil. In some embodiments, the processed oat ingredient comprises oat extract. In one or more embodiments, the processed oat ingredient comprises colloidal oatmeal. In some embodiments, the processed oat ingredient comprises oat oil. In some embodiments, the processed oat ingredient is selected from the group consisting of oat extract, colloidal oatmeal, oat oil and combinations thereof. In some embodiments, the processed oat ingredient comprises oat extract, colloidal oatmeal, and oat oil. In one or more embodiments, the processed oat ingredient comprises avenanthramides. In some embodiments, the processed oat ingredient comprises fermented oat. In one or more embodiments, the processed oat ingredient comprises beta-glucan.

[0036] The processed oat ingredient(s) may be present in amounts ranging from about 0.01, 0.05, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, or 5 to about 5, 5.5, 6, 6.5, 7, 8, 9, 10, 11 12, 15, 20, 25 or 30 wt.% of the total composition. In one or more embodiments, the processed oat ingredient(s) is present in an amount ranging from about 0.1 wt.% to about 10 wt.% by total weight of the composition. In some embodiments, the processed oat ingredient(s) is present in an amount ranging from about 0.1 wt.% to about 5 wt.% by total weight of the composition. In one or more embodiments, the processed oat ingredient(s) is present in an amount ranging from about 0.5 wt.% to about 5 wt.% by total weight of the composition. In some embodiments, the processed oat ingredient(s) is present in an amount ranging from about 0.5 wt.% to about 4 wt.% by total weight of the composition. In one or more embodiments, the processed oat ingredient(s) is present in an amount ranging from about 0.5 wt.% to about 3 wt.% by total weight of the composition. In some embodiments, the processed oat ingredient(s) is present in an amount ranging from about 1 wt.% to about 3 wt.% by total weight of the composition. In one or more embodiments, the processed oat ingredient(s) is present in an amount of about 1 wt.% to about 2 wt.% by total weight of the composition. In some embodiments, the processed oat ingredient(s) is present in an amount of about 1 wt.% by total weight of the composition. In one or more embodiments, the processed oat ingredient(s) is present in an amount of about 2 wt.% by total weight of the composition.

[0037] In one or more embodiments, the processed oat ingredient comprises colloidal oatmeal, and the colloidal oatmeal is present in an amount of about 0.5 wt.% to about 3 wt.% by total weight of the composition. In some embodiments, the colloidal oatmeal is present in an amount of about 1 wt.% to about 3 wt.% by total weight of the composition. In one or more embodiments, the colloidal oatmeal is present in an amount of about 1 wt.% to about 2 wt.% by total weight of the composition. In some embodiments, the colloidal oatmeal is present in an amount of about 1 wt.% by total weight of the composition. In one or more embodiments, the colloidal oatmeal is present in an amount of about 2 wt.% by total weight of the composition.

[0038] In some embodiments, the processed oat ingredient comprises oat extract, colloidal oatmeal, and oat oil, and the total amount of the three ingredients may be present in amounts ranging from about 0.01, 0.05, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, or 5 to about 5, 5.5, 6, 6.5, 7, 8, 9, 10, 11 12, 15, 20, 25 or 30 wt.% of the total composition. In one or more embodiments, the total amount of the oat extract, colloidal oatmeal, and oat oil is from about 0.1 wt.% to about 10 wt.% by total weight of the composition. In some embodiments, the total amount of the oat extract, colloidal oatmeal, and oat oil is about 0.1 wt.% to about 5 wt.% by total weight of the composition. In one or more embodiments, the total amount of the oat extract, colloidal oatmeal, and oat oil is about 0.5 wt.% to about 5 wt.% by total weight of the composition. In some embodiments, the total amount of the oat extract, colloidal oatmeal, and oat oil is about 0.5 wt.% to about 4 wt.% by total weight of the composition.

[0039] Other Ingredients The cleansing compositions described herein contain water as a cosmetically- acceptable carrier. As used herein, the term “cosmetically-acceptable carrier” means a carrier that is suitable for use in contact with the skin without undue toxicity, incompatibility, instability, irritation, allergic response, and the like. Water may be present in an amount ranging from about 10, 15, 20, 25, or 30 % to about 20, 25, 30, 35, or 40 % by weight of the total composition. In some embodiments, water is present in an amount ranging from about 20 to 30 %, or about 23 to about 28 % by weight of the total composition.

[0040] The compositions of the present invention may comprise any of a variety of additional other auxiliary ingredients used conventionally in healthcare / personal care compositions (referred to generally as “personal care components”). These other personal care components nonexclusively include one or more, pearlescent or opacifying agents, thickening agents, secondary conditioners, chelating agents, actives, exfoliants, and additives which enhance the appearance, feel and fragrance of the compositions, such as colorants, fragrances, preservatives, pH adjusting agents, rheology modifiers, and the like. Such auxiliary ingredients, when present, will be cosmetically / dermatologically acceptable and present in safe and effective amounts. In one or more embodiments, the compositions of the present invention further comprise one or more auxiliary agents selected from the group consisting of rheology modifiers, emulsifiers, preservatives, fragrances, and combinations thereof

[0041] What is meant by a surfactant is a surface-active agent intended to cleanse or emulsify. Examples of suitable surfactants include those found in Chapter 37, pages 431- 450 (Classification of surfactants, by L. Oldenhove de Guertechin) in Handbook of Cosmetic Science and Technology (edited by A. Barel, M. Paye and H. Maibach, Published in 2001 by Marcel Dekker, Inc., New York, NY) and include, but are not limited to anionic, amphoteric, nonionic and cationic surfactants. Further, as one of the advantageous of the present invention is for the ability of CAPB to achieve superior foaming properties without the need of an additional anionic surfactant in particular, in some embodiments, the cleansing compositions are essentially free or free of an anionic surfactant. As used herein, the term “anionic surfactant” refers to a surfactant having a negatively charged hydrophilic polar group. Examples of anionic surfactants include ammonium lauryl sulfate, sodium laureth sulfate, sodium lauryl sarcosinate, sodium myreth sulfate, sodium pareth sulfate, sodium stearate, sodium lauryl sulfate, a olefin sulfonate, and ammonium laureth sulfate. In further embodiments, the cleansing compositions are essentially free or free of sodium lauryl ether sulfate.

[0042] Examples of suitable nonionic surfactants include, but are not limited to the fatty alcohol acid or amide ethoxylates, monoglyceride ethoxylates, sorbitan ester ethoxylates alkyl polyglycosides, and mixtures thereof. One suitable nonionic surfactant is the polyoxyethylene derivatives of polyol esters, wherein the polyoxyethylene derivative of polyol ester (1) is derived from (a) a fatty acid containing from about 8 to about 22, and preferably from about 10 to about 14 carbon atoms, and (b) a polyol selected from sorbitol, sorbitan, glucose, a-methyl glucoside, polyglucose having an average of about 1 to about 3 glucose residues per molecule, glycerin, pentaerythritol and mixtures thereof, (2) contains an average of from about 10 to about 120, and preferably about 20 to about 80 oxy ethylene units; and (3) has an average of about 1 to about 3 fatty acid residues per mole of polyoxyethylene derivative of polyol ester.

[0043] Examples of polyoxyethylene derivatives of polyol esters include, but are not limited to PEG-80, sorbitan laurate, and polysorbate 20. PEG-80 sorbitan laurate, which is a sorbitan monoester of lauric acid ethoxylated with an average of about 80 moles of ethylene oxide, is available commercially from ICI Surfactants of Wilmington, Del. under the tradename, “Atlas G-4280.” Polysorbate 20, which is the laurate monoester of a mixture of sorbitol and sorbitol anhydrides condensed with approximately 20 moles of ethylene oxide, is available commercially from ICI Surfactants of Wilmington, Del. under the tradename “Tween 20.”

[0044] Another class of suitable nonionic surfactants includes long chain alkyl glucosides or poly glucosides, which are the condensation products of (a) a long chain alcohol containing from about 6 to about 22, and preferably from about 8 to about 14 carbon atoms, with (b) glucose or a glucose-containing polymer. The alkyl gluocosides have about 1 to about 6 glucose residues per molecule of alkyl glucoside. A preferred glucoside is decyl glucoside, which is the condensation product of decyl alcohol with a glucose polymer and is available commercially from Henkel Corporation of Hoboken, N.J. under the tradename, “Plantaren 2000.”

[0045] In some embodiments, the nonionic surfactant is selected from the group consisting of alkyl glucosides (e.g., decyl glucoside, lauryl glucoside, coco-glucoside) PEG- 80, sorbitan Laurate and combinations thereof.

[0046] The compositions of the present invention may also contain an amphoteric surfactant. As used herein, the term "amphoteric" shall mean: 1) molecules that contain both acidic and basic sites such as, for example, an amino acid containing both amino (basic) and acid (e.g., carboxylic acid, acidic) functional groups; or 2) zwitterionic molecules which possess both positive and negative charges within the same molecule. The charges of the latter may be either dependent on or independent of the pH of the composition. The amphoteric surfactants are disclosed herein without a counter ion. One skilled in the art would readily recognize that under the pH conditions of the compositions of the present invention, the amphoteric surfactants are either electrically neutral by virtue of having balancing positive and negative charges, or they have counter ions such as alkali metal, alkaline earth, or ammonium counter ions. Examples of amphoteric surfactants suitable for use in the present invention include, but are not limited to, amphocarboxylates such as alkylamphoacetates (mono or di); alkyl betaines; alkylamidoalkyl betaines (other than CAPB); alkylamidoalkyl sultaines; alkylamphophosphates; phosphorylated imidazolines such as phosphobetaines and pyrophosphobetaines; carboxy alkyl alkyl poly amines; alkylimino-dipropionates; alkylamphoglycinates (mono or di); alkylamphoproprionates (mono or di),); N-alkyl P-aminoproprionic acids; alkylpolyamino carboxylates; and mixtures thereof.

[0047] Classes of cationic surfactants that are suitable for use in this invention include alkyl quaternaries (mono, di, or tri), benzyl quaternaries, ester quaternaries, ethoxylated quaternaries, alkyl amines, and mixtures thereof, wherein the alkyl group has from about 6 carbon atoms to about 30 carbon atoms, with about 8 to about 22 carbon atoms being preferred. These cationic surfactants can be employed in composition of the present invention in an amount, based upon the total weight of the composition, from about 0.01% to about 20%, or from about 0.05% to about 15% or from about 0.1% to about 10%.

[0048] Any of a variety of commercially available pearlescent or opacifying agents which are capable of suspending water insoluble additives such as silicones and / or which tend to indicate to consumers that the resultant product is a conditioning shampoo are suitable for use in this invention. If used, the pearlescent or opacifying agent may be present in an amount, based upon the total weight of the composition, of from about 0.1 percent to about 10 percent, e.g. from about 1.5 percent to about 7 percent or from about 2 percent to about 5 percent. Examples of suitable pearlescent or opacifying agents include, but are not limited to mono or diesters of (a) fatty acids having from about 16 to about 22 carbon atoms and (b) either ethylene or propylene glycol; mono or diesters of (a) fatty acids having from about 16 to about 22 carbon atoms (b) a polyalkylene glycol of the formula: HO-(JO)a— H, wherein J is an alkylene group having from about 2 to about 3 carbon atoms; and a is 2 or 3; fatty alcohols containing from about 16 to about 22 carbon atoms; fatty esters of the formula: KCOOCH2L, wherein K and L independently contain from about 15 to about 21 carbon atoms; inorganic solids insoluble in the composition, and mixtures thereof.

[0049] The compositions described may also include any of a variety of conventional thickeners. Examples of suitable conventional thickeners include various thickeners having molecular weights of greater than about 100,000 grams per mole, including chemistries such as: hydroxyalkyl cellulose; alkyl cellulose; hydroxyalkyl alkyl cellulose; xanthan and guar gums, succinoglycan gums; Acrylates / C 10-30 Alkyl Acrylate Crosspolymer; and mixtures thereof.

[0050] Examples of suitable thickening agents nonexclusively include: mono or diesters of 1) polyethylene glycol of formula: HO — (CH2CH2O)ZH, wherein z is an integer from about 3 to about 200; and 2) fatty acids containing from about 16 to about 22 carbon atoms; fatty acid esters of ethoxylated polyols; ethoxylated derivatives of mono and diesters of fatty acids and glycerin; hydroxyalkyl cellulose; alkyl cellulose; hydroxyalkyl alkyl cellulose; hydrophobically-modified alkali swellable emulsions (HASEs); hydrophobically- modified ethoxylated urethanes (HEURs); xanthan and guar gums; and mixtures thereof. Thickeners include polyethylene glycol ester, such as PEG- 150 distearate which is available from the Hallstar Company of Chicago, Ill. under the tradename, “PEG 6000 DS”.

[0051] Examples of suitable chelating agents include those which are capable of protecting and preserving the compositions of this invention. The chelating agent may include ethylenediamine tetracetic acid (“EDTA”), such as tetrasodium EDTA, available commercially from Dow Chemical Company of Midland, Mich, under the tradename, “Versene 100XL” and is present in an amount, based upon the total weight of the composition, from about 0 (if unused) to about 0.5 percent or from about 0.05 percent to about 0.25 percent.

[0052] Suitable preservatives include, for example, parabens, quaternary ammonium species, phenoxyethanol, benzoates, DMDM hydantoin, and are present in the composition in an amount, based upon the total weight of the composition, from about 0 (if unused) to about 1 percent or from about 0.05 percent to about 0.5 percent.

[0053] Any fragrance compositions suitable for use on skin may be used in the composition according to the present invention.

[0054] The composition may further optionally contain one or more benefit agents or pharmaceutically-acceptable salts thereof. As used herein, the term “benefit agent” includes any active ingredient that is to be delivered into and / or onto the skin, hair or nail at a desired location, such as a cosmetic agent or a pharmaceutical agent. By “cosmetic agent,” it is meant any ingredient that is appropriate for cosmetically treating, providing nutrients to, and / or conditioning the hair, nail, and / or skin via topical application. By “pharmaceutical agent,” it is mean any drug that is either hydrophobic or hydrophilic in nature and appropriate for topical use. As used herein “medicament agents” include those agents capable of promoting recovery from injury and illness. The benefit agent(s), if used, may be included in any of the first oil phase, the second oil phase, or the water phase, if compatible with the other components in the selected phase.

[0055] The benefit agents useful herein may be categorized by their therapeutic benefit or their postulated mode of action. However, it is to be understood that the benefit agents useful herein may, in some circumstances, provide more than one therapeutic benefit or operate via greater than one mode of action. Therefore, the particular classifications provided herein are made for the sake of convenience and are not intended to limit the benefit agents to the particular application(s) listed. In addition, the compounds, which are identified below as being suitable for use as benefit agents, may be used in an amount over and above the amount that they may be used for other purposes in the cleansing composition or personal care system.

[0056] Examples of suitable benefit agents include, but are not limited to, depigmentation agents; reflectants; film forming polymers; additional humectants; amino acids and their derivatives; antimicrobial agents; allergy inhibitors; anti-acne agents; antiaging agents; anti-wrinkling agents, antiseptics; analgesics; antitussives; antipruritics; local anesthetics; anti-hair loss agents; hair growth promoting agents; hair growth inhibitor agents, antihistamines such as Mandragora Vernalis, Tanacetum Parthenium and the like; antiinfectives such as Acacia Catechu, Aloe Barbadensis, Convallaria Majalis, Echinacea, Eucalyptus, Mentha Piperita, Rosa Canina, Sassafras Albidum, and the like; inflammation inhibitors; anti-emetics; anticholinergics; vasoconstrictors; vasodilators; wound healing promoters; peptides, polypeptides and proteins; deodorants and anti-perspirants; medicament agents; and skin moisturizers; skin firming agents, vitamins; tanning agents; skin lightening agents; antifungals such as Centaurea Cyanus, Kalmia Latifolia and antifungals for foot preparations; depilating agents; shaving preparations; external analgesics; perfumes; counterirritants; hemorrhoidals; insecticides; poison ivy products; poison oak products; burn products; anti-diaper rash agents; prickly heat agents; vitamins; amino acids and their derivatives; herbal extracts; retinoids; flavenoids; sensates; antioxidants; skin conditioners; hair lighteners, chelating agents; cell turnover enhancers; coloring agents; sunscreens, those active ingredients disclosed in U.S. Pat. No. 6,063,397, which is incorporated herein by reference, anti-edema agents, collagen enhancers, and mixtures thereof.

[0057] Examples of suitable anti-edema agents nonexclusively include bisabolol natural, synthetic bisabolol, and mixtures thereof.

[0058] Examples of suitable vasoconstrictors nonexclusively include horse chestnut extract, prickly ash, and mixtures thereof.

[0059] Examples of suitable anti-inflammatory agents nonexclusively include benoxaprofen, centella asiatica, bisabolol, feverfew (whole), feverfew (parthenolide free), green tea extract, green tea concentrate, hydrogen peroxide, lycopene including “Lyc-o- Pen” available from LycoRed Natural Products Industries, Ltd., chamomile, and mixtures thereof.

[0060] Examples of collagen enhancers nonexclusively include vitamin A, vitamin C, and mixtures thereof.

[0061] Examples of suitable skin firming agent nonexclusively include dimethylaminoethanol (“DMAE”).

[0062] Examples of suitable reflectants nonexclusively include mica, alumina, calcium silicate, glycol dioleate, glycol distearate, silica, sodium magnesium fluorosilicate, and mixtures thereof.

[0063] Suitable film forming polymers include acetyl tyrosinamide, zinc pyrithione, coal tar, benzoyl peroxide, selenium sulfide, hydrocortisone, sulfur, menthol, pramoxine hydrochloride, tricetylmonium chloride, polyquaternium 10, panthenol, panthenol triacetate, vitamin A and derivatives thereof, vitamin B and derivatives thereof, vitamin C and derivatives thereof, vitamin D and derivatives thereof, vitamin E and derivatives thereof, vitamin K and derivatives thereof, keratin, lysine, arginine, hydrolyzed wheat proteins, hydrolyzed silk proteins, octyl methoxy cinnamate, oxybenzone, minoxidil, titanium dioxide, zinc dioxide, retinol, erthromycin, tretinoin, and mixtures thereof.

[0064] One type of benefit agent includes those therapeutic components that are effective in the treatment of dandruff, seborrheic dermatitis, and psoriasis as well as the symptoms associated therewith. Examples of such suitable benefits agents nonexclusively include zinc pyrithione, anthralin, shale oil and derivatives thereof such as sulfonated shale oil, selenium sulfide, sulfur; salicylic acid; coal tar; povidone-iodine, imidazoles such as ketoconazole, dichlorophenyl imidazolodioxalan, which is commercially available from Janssen Pharmaceutica, N.V., under the tradename, “Elubiol”, clotrimazole, itraconazole, miconazole, climbazole, tioconazole, sulconazole, butoconazole, fluconazole, miconazole nitrate and any possible stereo isomers and derivatives thereof; piroctone olamine (Octopirox); selenium sulfide; ciclopirox olamine; anti-psoriasis agents such as vitamin D analogs, e.g. calcipotriol, calcitriol, and tacaleitrol; vitamin A analogs such as esters of vitamin A, e.g. vitamin A palmitate, retinoids, retinols, and retinoic acid; corticosteroids such as hydrocortisone, clobetasone, butyrate, clobetasol propionate and mixtures thereof. Exemplary Embodiments

[0065] The above ingredients may be combined in any combination according to the guidelines provided. For example, in one or more embodiments, the skincare composition comprises a. greater than about 40 wt.% glycerin; b. from about 1 to about 10 wt.% caprylic / capric triglyceride; c. from about 1 wt.-% to about 10 wt.-% of dimethicone; d. from about 0.01 wt.-% to about 3 wt.-% of caprylyl glycol; e. from about 0.01 wt.-% to about 3 wt.-% of a processed oat ingredient; and f. water.

[0066] In one or more embodiments, the water is present in an amount of about 25 to about 36 wt.- %. In further embodiments, the glycerin is present in an amount of about 42 to about 50 wt.-%.

[0067] Methods

[0068] The present invention provides methods of treating the human body comprising contacting at least a portion of the body with a composition of the present invention. Accordingly, another aspect of the invention pertains to a method of moisturizing skin, the method comprising applying to the skin any of the skincare compositions described herein

[0069] Any suitable method of topically applying the compositions to the skin in need may be used. As used herein, “topically applying” means directly laying on or spreading on outer skin, by use of the hands or an applicator such as a wipe, roller, or spray. For example, the composition may be applied directly from a package to the skin in need, by hand to the skin in need, or may be transferred from a substrate such as a wipe or mask, or a combination of two or more thereof. In other embodiments, the composition may be applied via a dropper, tube, roller, spray, or added to a bath or otherwise to water to be applied to the skin, and the like. Such topical application may be to any skin in need of treatment on the body, for example skin of the face, lips, neck, chest, back, buttocks, arms, axilla, and / or legs.

[0070] While the foregoing description represent exemplary embodiments of the present invention, it will be understood that various additions, modifications and substitutions may be made therein without departing from the spirit and scope of the present invention. In particular, it will be clear to those skilled in the art that the present invention may be embodied in other specific forms, structures, arrangements, proportions, and with other elements, materials, and components, without departing from the spirit or essential characteristics thereof. One skilled in the art will appreciate that the invention may be used with many modifications of structure, arrangement, proportions, materials, and components and otherwise, used in the practice of the invention, which are particularly adapted to specific environments and operative requirements without departing from the principles of the present invention. The presently disclosed embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims, and not limited to the foregoing description. It will be appreciated that in the claims, the term “comprises / comprising” does not exclude the presence of other elements or steps. In addition, singular references do not exclude a plurality. The terms “a”, “an”, “first”, “second”, etc., do not preclude a plurality.

[0071] All percentages, parts and ratios are based upon the total weight of the composition of the present invention, unless otherwise specified. All such weights as they pertain to the listed ingredients are based on the level of the particular ingredient described and, therefore, do not include carriers or by-products that may be included in commercially available materials, unless otherwise specified.

[0072] EXAMPLES

[0073] 1 Composition preparation methods

[0074] The formulations were prepared as follows with ingredients as listed in Tables 1 and 2. We added water to the main vessel and started mixing and heating to 80°C. The glycerin and oat flour were added with continued mixing and heating until uniform. At about 70-72°C the caprylyl glycol was added, followed by the preservative (for those samples containing it), palmitic acid, stearic acid, cetearyl acohol, sodium cetearyl sulfate, isocetyl alcohol (for those samples containing it) or caprylic / capric triglyceride (for those samples containing it) and dimethicone. The mixing and heating continued until uniform. The mixture was homogenized for 15min at 72°C. The mixture was then allowed to start cooling. At around 40°C, ethylhexylglycerin was added and once uniform the oat oil, oat extract and panthenol (for those samples containing it) were added and again mixed until uniform. pH was adjusted for Ex. 2 and 3 to a pH of about 5.

[0075] Table 1 Inventive compositions

[0076] Table 2 Comparative compositions

[0077] Example 2 Antimicrobial Effectiveness test

[0078] Unaged compositions prepared in Ex. 1 were tested using an antimicrobial effectiveness test after preparation. This procedure was carried out using aseptic sterile techniques.

[0079] Challenge inocula were prepared such that the final inoculum level was between IxlO5and IxlO6CFU / mL per gram of composition, preferably between 5xl05and IxlO6CFU / mL per gram of composition. The following organisms were inoculated either individually or in bacterial pools.

[0080] E. coli ATCC# 8739

[0081] S. aureus ATCC# 6538

[0082] P. aeruginosa ATCC# 9027

[0083] B. cepacia ATCC# 25416

[0084] C. albicans ATCC# 10231

[0085] A. brasiliensis ATCC# 16404

[0086] For each inoculum, about 20g of composition was added to individual sterile capped bacteriological containers. The inoculum tube was vortexed for about 15 seconds. About 0.2 mL of inoculum was transferred to the bacteriological container using a micropipette with sterile tip. The composition with inoculum was thoroughly mixed for about 1 minute using a sterile spatula. The inoculated composition was stored at 22.5 + / - 2.5°C. Samples were tested and evaluated for microbial recovery at 7 days, 14 days and 28 days post inoculation. Before sampling, inoculated composition was mixed to ensure homogeneity. 1 gram aliquot was removed from each inoculated sample container and diluted in 9 mL of neutralizer in a screw top tube with glass beads, which is shaken, vortexed until uniformly mixed. Serial dilutions were prepared from this 1 : 10 dilution four times. Plating was performed in duplicate on 90mm plates with Tryptic Soy Agar (TSA) for bacteria, on 150mm plates with Sabouraud Dextrose Agar (SDA) for fungus and on 90mm plates with Sabouraud Dextrose Agar (SDA) for yeast. Samples were incubated at 22.5 + / - 2.5°C for 3- 5 days for yeast, 22.5 + / - 2.5°C for 3-7 days for A. brasiliensis, and 32.5 + / - 2.5°C for 3-5 days for bacteria. Plates were read and colonies counted, and log reduction was determined by calculated log of inoculum density per gram at the starting point vs log of recovery at 7 days, 14 days and 28 day

[0087] Table 3 A. brasiliensis results All samples passed for each of the other microorganisms, however some samples failed for

[0088] A. brasiliensis, also known as mold. For mold, passing would be greater or equal to 0 at D14 and greater or equal to 1 at D28. The results for A. brasiliensis are shown in Table 3. We have shown that compositions with 45% glycerin and have less than 30% water with isocetyl alcohol in the composition did not pass micro testing for mold even with additional preservative boosters. Although C9 passed, it is noted that the sample has 35% water.

[0089] Surprisingly, we found that by replacing isocetyl alcohol with caprylic / capric triglyceride resulted in passing the micro testing for mould.

Claims

What is claimed is:

1. A skincare composition comprising: a. greater than 40 wt.% of one or more humectants by total weight of the composition; b. a mixture of esters of glycerin; c. one or more emollients; d. one or more skin conditioners; and e. less than 35 wt.% water by total weight of the composition.

2. The skincare composition of claim 1, wherein the composition is essentially free of isocetyl alcohol.

3. The skincare composition of claim 1 or 2, wherein the humectant comprises glycerin.

4. The skincare composition of any of claims 1-3, wherein the glycerin is present from about 41 to about 50 wt.% by total weight of the composition.

5. The skincare composition of any of claims 1-4, wherein the one or more esters of glycerin comprises triesters of glycerin.

6. The skincare composition of any of claims 1-5, wherein the one or more triesters of glycerin comprises caprylic / capric triglyceride.

7. The skincare composition of any of claims 1-6, wherein the one or more esters of glycerin is present in an amount of about 1 wt.-% to about 12 wt.-%.

8. The skincare composition of any of claims 1-7, wherein the one or more emollients is present in an amount of about 1 wt.-% to about 10 wt.-%.

9. The skincare composition of any of claims 1-8, wherein the one or more emollients is selected from the group consisting of C12-C15 alkyl benzoate; cyclomethicone, dimethicone, and mixtures thereof.

10. The skincare composition of any of claims 1-9, wherein the one or more emollients comprises dimethicone.

11. The skincare composition of any of claims 1-10, wherein the one or more skin conditioners are selected from the group consisting of glycols, cationic surfactants, and combinations thereof.

12. The skincare composition of any of claims 1-11, wherein the one or more skin conditioners comprises caprylyl glycol.

13. The skincare composition of any of claims 1-12, wherein the water is present in an amount of less than about 33 wt.% by total weight of the composition.

14. A skincare composition comprising: a. about 42 to about 50 wt.-% glycerin by total weight of the composition; b. from about 1 to about 10 wt.% caprylic / capric triglyceride by total weight of the composition; c. from about 1 wt.-% to about 10 wt.-% of dimethicone by total weight of the composition; d. from about 0.01 wt.-% to about 3 wt.-% of caprylyl glycol by total weight of the composition; e. from about 0.01 wt.-% to about 3 wt.-% of a processed oat ingredient by total weight of the composition; and f. from about 25 wt.% to about 32 wt.% of water.

15. A method of moisturizing skin, the method comprising applying to the skin the skincare composition of any of claims 1-14.