JP7638069B2 - Cosmetics - Google Patents

Description

The present invention relates to a cosmetic preparation that inhibits gelation.

Traditionally, skin care products such as cosmetics contain moisturizers that are expected to improve the skin's ability to retain moisture, and vitamins E and C that are expected to have antioxidant effects, in order to prevent skin aging. In recent years, however, many drugs have been developed to prevent or improve wrinkles and sagging. Among them, nicotinamide is a vitamin that is highly safe and is known to have an effect of improving rough skin and keratin, as well as to improve the firmness and elasticity of the skin. For example, Patent Document 1 describes an aqueous composition that contains nicotinamide, one or more water-soluble polysaccharides selected from the group consisting of Tremella fuciformis polysaccharide, sodium chondroitin sulfate, and proteoglycan, a polyhydric alcohol, and a monohydric lower alcohol.

In the field of cosmetics, attempts are being made to improve the usability of cosmetics by blending additives such as thickeners and gelling agents. Among these, tamarind gum is widely used as a thickening agent because it thickens (gels) by hydrogen bonding with molecules that have OH groups, has properties such as being less stringy and slimy, and gives a smooth yet fluffy feel when used.

For example, as a cosmetic containing tamarind gum and a polyhydric alcohol, Patent Document 2 describes a cloudy cosmetic containing a polyhydric alcohol, an acyl amino acid ester, a phospholipid, polyoxyethylene hydrogenated castor oil, and tamarind gum. Patent Document 3 also describes a pack agent exemplified as a skin external preparation composition consisting of L-ascorbic acid and its derivatives, a specific bisethoxydiglycol dicarboxylate, and one or more selected from 2-phenoxyethanol, glyceryl caprate, ethylhexylglycerin, and a specific 1,2-alkanediol, which contains tamarind gum and a polyhydric alcohol as optional ingredients.

JP 2019-131547 A Patent No. 6226843 JP 2012-176903 A

Recently, when investigating cosmetics containing nicotinamide using tamarind gum as a gelling agent, the researchers removed nicotinamide in an attempt to reduce the yellowing of the cosmetic appearance and stickiness after application that were thought to be caused by nicotinamide. They then made the unexpected discovery that nicotinamide contributes to inhibiting the gelation of tamarind gum, which led to the present invention.

In other words, the present invention was made based on the above findings, and aims to provide a cosmetic composition containing tamarind gum and a polyhydric alcohol in which gelation is suppressed.

The cosmetic of the present invention contains, relative to the total amount of the cosmetic,
(A) 0.001 to 0.8% by mass of tamarind gum;
(B) a polyhydric alcohol;
(C) 1 to 10% by mass of nicotinic acid or a derivative thereof;
It includes.

(B) The amount of polyhydric alcohol is preferably 3 to 25% by mass based on the total amount of the cosmetic.

The mass ratio of (A) tamarind gum to (C) nicotinic acid or its derivative is preferably 0.01 to 0.6.

(C) Nicotinic acid or its derivative is preferably nicotinamide.

(B) The polyhydric alcohol is preferably at least one selected from glycerin, butylene glycol, and dipropylene glycol.

The cosmetic of the present invention may further contain (D) an acrylic acid-based polymer.

The cosmetic of the present invention may further contain (E) at least one polymer selected from the group consisting of homopolymers of 2-methacryloyloxyethyl phosphorylcholine and copolymers of 2-methacryloyloxyethyl phosphorylcholine and methacrylic acid esters.

The cosmetic of the present invention may be an aqueous cosmetic.

The cosmetic of the present invention may be an oil-in-water cosmetic.

The cosmetic of the present invention contains, relative to the total amount of the cosmetic,
(A) 0.001 to 0.8% by mass of tamarind gum;
(B) 3 to 25% by mass of a polyhydric alcohol;
(C) 1 to 10% by mass of nicotinic acid or a derivative thereof;
Since the cosmetic contains tamarind gum and polyhydric alcohol, gelation is suppressed, and the cosmetic has a smooth and fluffy feel and a moist feel without being sticky.

The cosmetic of the present invention contains, relative to the total amount of the cosmetic,
(A) 0.001 to 0.8% by mass of tamarind gum;
(B) a polyhydric alcohol;
(C) 1 to 10% by mass of nicotinic acid or a derivative thereof;
It includes.
Each component will be described in detail below.

(A) Tamarind gum The (A) tamarind gum used in the present invention is a polysaccharide obtained by separating and purifying tamarind seeds, and is a water-soluble polymeric polysaccharide of xyloglucan having glucose as the main chain and xylose and galactose as the side chains. The average molecular weight is about 470,000.

(A) The amount of tamarind gum is 0.001 to 0.8% by mass, preferably 0.01 to 0.7% by mass, and more preferably 0.1 to 0.6% by mass, based on the total amount of the cosmetic. By setting the amount of tamarind gum to 0.001% by mass or more and 0.8% by mass or less, a smooth yet fluffy feel can be obtained, and by setting the amount of tamarind gum to 0.8% by mass or less, it is possible to suppress gelation caused by the tamarind gum and polyhydric alcohol while keeping the amount of nicotinic acid or its derivative for suppressing gelation to an appropriate amount. The smooth yet fluffy feel means that the cosmetic can be applied comfortably to the skin without any burden on the skin during application, and after application, it feels as if a soft film gently covers and protects the skin.

(B) polyhydric alcohol The (B) polyhydric alcohol used in the present invention is a dihydric or higher polyhydric alcohol.As dihydric or higher polyhydric alcohols, for example, glycerin, butylene glycol (BG), dipropylene glycol (DPG), isoprene glycol, propylene glycol, diglycerin, polyethylene glycol, as well as sugar alcohols such as sorbitol, erythritol, maltitol, etc., can be mentioned.In particular, from the viewpoint of usability such as good moisturizing property and versatility, glycerin, butylene glycol, and dipropylene glycol are more preferable.These (B) polyhydric alcohols can be used alone or in combination of two or more.

The blending amount of (B) polyhydric alcohol is preferably 3 to 25% by mass, more preferably 3.5 to 22% by mass, and even more preferably 4 to 20% by mass, based on the total amount of the cosmetic. By blending (B) polyhydric alcohol in an amount of 3% by mass or more, a moist effect after application can be obtained, and by blending it in an amount of 25% by mass or less, gelation caused by the tamarind gum and polyhydric alcohol can be further suppressed, while the amount of nicotinic acid or its derivative for gelation suppression can be made appropriate.

(C) Nicotinic acid or its derivatives As (C) nicotinic acid or its derivatives, nicotinamide, nicotinic acid ester, etc. are preferably mentioned, and as nicotinic acid ester, tocopherol nicotinate, benzyl nicotinate, methyl nicotinate, ethyl nicotinate, etc. can be mentioned.These (C) nicotinic acid or its derivatives can be used alone or in combination of two or more kinds.From the viewpoint of efficacy and versatility, nicotinamide is more preferable.

The amount of (C) nicotinic acid or its derivative is 1 to 10% by mass relative to the total amount of the cosmetic, more preferably 1.2 to less than 10% by mass, and even more preferably 1.8 to 9% by mass. When the amount of (C) nicotinic acid or its derivative is 1% by mass or more, it is possible to suppress the gelation of (A) tamarind and (B) polyhydric alcohol, and when the amount is 10% by mass or less, it is possible to suppress the stickiness of (C) nicotinic acid or its derivative.

(A) Tamarind gum gels by hydrogen bonding with the OH groups of (B) polyhydric alcohols, but this gelation is inhibited by the presence of (C) nicotinic acid or its derivatives. It is presumed that part of (C) nicotinic acid or its derivatives ionizes and inhibits the hydrogen bonding between tamarind gum and the OH groups of the polyhydric alcohols. Conventionally, (C) nicotinic acid or its derivatives has been thought to have a structure that is difficult to ionize, so this is an unexpected effect.

From the viewpoint of suppressing gelation and stickiness after application, the mass ratio ((A)/(C)) of (A) tamarind gum to (C) nicotinic acid or a derivative thereof is more preferably 0.01 to 0.6, and even more preferably 0.015 to 0.55.

(D) Acrylic Acid-Based Polymer The cosmetic of the present invention may contain (D) an acrylic acid-based polymer. The acrylic acid-based polymer is a copolymer or crosspolymer formed with (meth)acrylic acid monomer and/or (meth)acrylic acid alkyl monomer as essential components, and when used in a cosmetic, it provides moist usability and is also effective in adjusting viscosity. On the other hand, there is a concern that it may promote gelation, but the cosmetic of the present invention can suppress gelation, so the good usability of the acrylic acid-based polymer can be enjoyed.

The acrylic acid-based polymers are copolymers and crosspolymers formed from (meth)acrylic acid monomers and/or alkyl (meth)acrylate monomers as essential components.
Specifically, for example, carboxyvinyl polymers; (meth)acrylate alkyl copolymers; acrylic acid/alkyl methacrylate copolymers; (meth)acrylic acid/alkyl (meth)acrylate/polyoxyethylene alkyl ether (meth)acrylate copolymers such as acrylates/polyoxyethylene (20) methacrylate cetyl ether copolymer, acrylates/polyoxyethylene (20) methacrylate stearyl ether copolymer, and acrylates/polyoxyethylene (25) methacrylate behenyl ether copolymer; (meth)acrylic acid/(meth)acrylic acid copolymers such as acrylates/polyoxyethylene (20) itaconate cetyl ether copolymer and acrylates/polyoxyethylene (20) itaconate stearyl ether copolymer. Examples of such crosspolymers include alkyl acid/polyoxyethylene alkyl ether itaconate copolymers, (meth)acrylic acid/alkyl (meth)acrylate/polyoxyethylene alkyl ether (meth)acrylate crosspolymers such as acrylates/polyoxyethylene (20) stearyl ether methacrylate crosspolymer and acrylates/polyoxyethylene (25) behenyl ether methacrylate crosspolymer, acrylates/vinyl neodecanoate crosspolymer, (ammonium acryloyldimethyltaurate/VP) copolymer, (ammonium acryloyldimethyltaurate/beheneth-25 methacrylate) crosspolymer, (N-vinylpyrrolidone-N,N-dimethylaminoethyl methacrylate) crosspolymer (polyacrylate-1), etc. The numbers in parentheses above represent the average number of moles of ethylene oxide added.

The carboxyvinyl polymer may be an alkyl-modified carboxyvinyl polymer. The carboxyvinyl polymer refers to a polymer that is mainly made of acrylic acid, and the alkyl-modified carboxyvinyl polymer refers to a copolymer that is mainly made of acrylic acid and alkyl methacrylate (for example, having a total carbon number of 10 to 30 (C10 to C30)). The carboxyvinyl polymer may be a compound designated as "CARBOMER" by the INCI name. The alkyl-modified carboxyvinyl polymer may be a compound designated as "ACRYLATES/C10-30 ALKYL ACRYLATE CROSSPOLYMER" by the INCI name.
These acrylic acid-based polymers (D) may be used alone or in appropriate combination of two or more kinds.

The blending amount of (D) acrylic acid-based polymer is preferably 0.01 to 1 mass% of the total amount of the cosmetic, more preferably 0.05 to less than 1 mass%, and even more preferably 0.1 to 0.8 mass%. By blending (D) acrylic acid-based polymer in an amount of 0.01 mass% or more, a more moist feel can be obtained and an appropriate viscosity can be imparted to the cosmetic, and by blending it in an amount of 1 mass% or less, the amount of nicotinic acid or its derivatives for inhibiting gelation can be made appropriate.

(E) At least one polymer selected from the group consisting of a homopolymer of 2-methacryloyloxyethyl phosphorylcholine and a copolymer of 2-methacryloyloxyethyl phosphorylcholine and a methacrylic acid ester The cosmetic of the present invention may contain (E) at least one polymer selected from the group consisting of a homopolymer of 2-methacryloyloxyethyl phosphorylcholine and a copolymer of 2-methacryloyloxyethyl phosphorylcholine and a methacrylic acid ester (hereinafter, also referred to simply as component (E)). By containing component (E), the usability of the cosmetic can be further improved.

Preferred examples of copolymers of 2-methacryloyloxyethyl phosphorylcholine and methacrylic acid esters include 2-methacryloyloxyethyl phosphorylcholine/butyl methacrylate copolymer, 2-methacryloyloxyethyl phosphorylcholine/stearyl methacrylate copolymer, etc.

From the viewpoint of improving usability, 2-methacryloyloxyethyl phosphorylcholine homopolymer, 2-methacryloyloxyethyl phosphorylcholine/butyl methacrylate copolymer, and 2-methacryloyloxyethyl phosphorylcholine/stearyl methacrylate copolymer are more preferable. Component (E) can also be a commercially available product, and examples of commercially available products include Lipidure (registered trademark)-HM, -PMB, -NR, -S, etc., from NOF Corporation.

The blending amount of component (E) is preferably 0.01 to 3.0% by mass, and more preferably 0.1 to less than 1.0% by mass, based on the total amount of the cosmetic. By blending component (E) in an amount of 0.01 to 3.0% by mass, usability can be improved.

In addition to the above essential components, the cosmetic of the present invention may contain, as necessary, appropriate ingredients that are typically used in cosmetics and pharmaceuticals, such as oils, surfactants, powders, coloring materials, water, alcohols, thickeners (excluding (D) acrylic acid-based polymers), chelating agents, silicones, antioxidants, UV absorbers, moisturizers, fragrances, various medicinal ingredients, preservatives, pH adjusters, neutralizing agents, etc.

Of the above optional ingredients, the oils include linear alcohols such as lauryl alcohol, cetyl alcohol, stearyl alcohol, myristyl alcohol, and oleyl alcohol; higher alcohols such as monostearyl glycerin ether, lanolin sulcol, cholesterol, phytosterol, and branched alcohols such as isostearyl alcohol; higher fatty acids such as lauric acid, myristic acid, palmitic acid, and stearic acid; waxes such as solid paraffin, beeswax, hydrogenated castor oil, carnauba wax, and varico wax; beef tallow; lard; Examples of such oils include animal and vegetable oils such as mutton tallow, squalane, coconut oil, palm oil, palm kernel oil, soybean oil, olive oil, cottonseed oil, jojoba oil, castor oil, and lanolin; mineral oils such as liquid paraffin and petrolatum; and synthetic oils such as trimethylpropane triisostearate, isopropyl myristate, glycerol tri-2-ethylhexanate, pentaerythritol tetra-2-ethylhexanate, silicone oil, polyoxyethylene (hereinafter also referred to as POE), polyoxypropylene (hereinafter also referred to as POP), and pentaerythritol ether.

Surfactants include soap bases, fatty acid soaps such as sodium laurate and sodium palmitate, higher alkyl sulfate ester salts such as sodium lauryl sulfate and potassium lauryl sulfate, alkyl ether sulfate ester salts such as POE triethanolamine lauryl sulfate and sodium POE lauryl sulfate, N-acylsarcosinic acids such as sodium lauroyl sarcosine, higher fatty acid amide sulfonic acids such as sodium N-myristoyl-N-methyl taurine and sodium coconut oil fatty acid methyl tauride, phosphate ester salts such as POE stearyl ether phosphoric acid, and sulfuric acid salts such as monolauroyl monoethanolamide POE sodium sulfosuccinate and sodium lauryl polypropylene glycol sulfosuccinate. alkylbenzenesulfonates such as sodium lauroylsuccinate, linear dodecylbenzenesulfonate sodium, and linear dodecylbenzenesulfonate triethanolamine; N-acylglutamates such as disodium N-stearoylglutamate and monosodium N-stearoylglutamate; higher fatty acid ester sulfates such as sodium hydrogenated coconut oil fatty acid glycerin sulfate; sulfated oils such as turmeric oil; anionic surfactants such as POE alkyl ether carboxylic acid, POE alkyl allyl ether carboxylate, higher fatty acid ester sulfonates, secondary alcohol sulfates, higher fatty acid alkylolamide sulfates, sodium lauroyl monoethanolamide succinate, and sodium caseinate;

Alkyl trimethyl ammonium salts such as stearyl trimethyl ammonium chloride and lauryl trimethyl ammonium chloride, dialkyl dimethyl ammonium salts such as distearyl dimethyl ammonium chloride, alkyl pyridinium salts such as cetyl pyridinium chloride, alkyl quaternary ammonium salts, alkyl dimethyl benzyl ammonium salts, alkyl isoquinolinium salts, dialkyl morphonium salts, POE alkyl amines, alkyl amine salts, polyamine fatty acid derivatives, amyl alcohol fatty acid derivatives, cationic surfactants such as benzalkonium chloride; imidazoline amphoteric surfactants such as 2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt, amido amphoteric surfactants such as betaine surfactants such as dobetaine and sulfobetaine; sorbitan fatty acid esters such as sorbitan monooleate, sorbitan monoisostearate, sorbitan monolaurate, sorbitan monopalmitate, and sorbitan trioleate; glycerin polyglycerin fatty acids such as glycerin monocottonseed oil fatty acid, glycerin monostearate, glycerin sesquioleate, and glycerin monostearate malate; propylene glycol fatty acid esters such as propylene glycol monostearate, hydrogenated castor oil derivatives, glycerin alkyl ethers, and POE-methylpolysiloxane copolymers; lipophilic nonionic surfactants such as POE sorbitan monooleate, P POE sorbitan fatty acid esters such as POE sorbitan monostearate, POE sorbit fatty acid esters such as POE sorbit monolaurate, POE sorbit monooleate, POE sorbit monostearate, POE glycerin fatty acid esters such as POE glycerin monooleate, POE glycerin distearate, POE fatty acid esters such as POE monooleate, POE distearate, POE monodioleate, POE alkyl ethers such as POE lauryl ether, POE oleyl ether, POE cholestanol ester, POE alkyl phenyl ethers such as POE octylphenyl ether, POE nonylphenyl ether, Pluronic, etc. POE-POP alkyl ethers such as POE-POP monobutyl ether, POE-POP cetyl ether, and POE-POP glycerin ether; POE castor oil, POE hydrogenated castor oil, POE hydrogenated castor oil monoisostearate, and POE hydrogenated castor oil maleic acid derivatives; POE beeswax/lanolin derivatives such as POE sorbitol beeswax; alkanolamides such as coconut oil fatty acid diethanolamide and fatty acid isopropanolamide; hydrophilic nonionic surfactants such as POE propylene glycol fatty acid esters, POE fatty acid amides, POE alkylamines, sucrose fatty acid esters, and alkylethoxydimethylamine oxides.

Examples of alcohols include lower alcohols such as methanol, ethanol, propanol, and isopropanol, as well as sitosterol and lanosterol.

Thickeners include alginic acid polymers such as sodium alginate and propylene glycol alginate, vinyl polymers such as polyvinyl methyl ether, POE polymers, POE-POP copolymer polymers, polyethyleneimine, cationic polymers, bentonite, magnesium aluminum silicate, laponite, hectorite, inorganic water-soluble polymers such as silicic anhydride, and other water-soluble polymers.

Chelating agents include citramalic acid, agaric acid, glyceric acid, shikimic acid, hinokitiol, gallic acid, tannic acid, caffeic acid, ethylenediaminetetraacetic acid, ethyleneglycoldiaminetetraacetic acid, diethylenetriaminepentaacetic acid, phytic acid, polyphosphoric acid, metaphosphoric acid, and analogs thereof, as well as alkali metal salts and carboxylate esters thereof.

Examples of ultraviolet absorbers include benzoic acid-based ultraviolet absorbers such as para-aminobenzoic acid; anthranilic acid-based ultraviolet absorbers such as methyl anthranilate; salicylic acid-based ultraviolet absorbers such as octyl salicylate; cinnamic acid-based ultraviolet absorbers such as isopropyl paramethoxycinnamate and octyl paramethoxycinnamate; pyridazine derivatives such as dimorpholinopyridazinone; benzoylmethane derivatives such as 4-methoxy-4'-t-butyldibenzoylmethane; 3-(4'-methylbenzylidene)-d,l-camphor, 3-benzoyl camphor derivatives such as norbornylidene-d,l-camphor; benzotriazole derivatives such as 2,2'-hydroxy-5-methylphenylbenzotriazole, 2-(2'-hydroxy-5'-t-octylphenyl)benzotriazole, and 2-(2'-hydroxy-5'-methylphenylbenzotriazole; others include 2-phenyl-5-methylbenzoxazole; dibenzalazine; dianisoylmethane; 5-(3,3-dimethyl-2-norbornylidene)-3-pentan-2-one, etc.

Humectants include xylitol, maltose, trehalose, D-mannitol, glucose, fructose, sodium chondroitin sulfate, sodium hyaluronate, sodium lactate, glucosamine, cyclodextrin, etc.

Medicinal ingredients include vitamins such as vitamin A oil, retinol, retinol palmitate, pyridoxine hydrochloride, magnesium ascorbyl phosphate, vitamin D2, dl-α-tocopherol, pantothenic acid, and biotin; anti-inflammatory agents such as azulene and glycyrrhizin; skin whitening agents such as arbutin; hormones such as estradiol; astringents such as zinc oxide and tannic acid; cooling agents such as L-menthol and camphor; and other ingredients such as lysozyme chloride, pyridoxine hydrochloride, and sulfur. In addition, various extracts that exhibit diverse medicinal effects can be added. These include Houttuynia cordata extract, Phellodendron bark extract, Licorice extract, Peony extract, Peony extract, Loofah extract, Saxifrage extract, Eucalyptus extract, Clove extract, Horse chestnut extract, Cornflower extract, Seaweed extract, and Thyme extract.

Preservatives include paraoxybenzoic acid esters such as methylparaben, ethylparaben, and butylparaben, benzoic acid, salicylic acid, sorbic acid, parachlormetacresol, hexachlorophene, benzalkonium chloride, chlorhexidine chloride, trichlorocarbanilide, photosensitizers, and phenoxyethanol.

Neutralizing agents include 2-amino-2-methyl-1-propanol, 2-amino-2-methyl-1,3-propanediol, potassium hydroxide, potassium hydroxide, triethanolamine, sodium carbonate, etc.

Examples of pH adjusters include lactic acid, citric acid, glycolic acid, succinic acid, tartaric acid, malic acid, sodium bicarbonate, and ammonium bicarbonate.

Antioxidants include ascorbic acid, α-tocopherol, carotenoids, etc.

The cosmetic of the present invention may be in any form as long as it contains the essential ingredients, but it may be an aqueous cosmetic, or may be emulsified with an oily ingredient by a known method to produce an oil-in-water cosmetic. The uses of the cosmetic of the present invention are not particularly limited, and it may be widely used in any form that is conventionally used in cosmetics, such as skin lotion, milky lotion, cream, cleanser, gel, essence (serum), pack, and other basic cosmetics, lipstick, eye shadow, eye liner, mascara, foundation, sunscreen, and other makeup cosmetics, oral cosmetics, fragrance cosmetics, hair cosmetics, body cosmetics, and the like.

The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples. In the following examples, the blend amounts are expressed in mass % unless otherwise specified.
Cosmetics were prepared in the usual manner according to the formulations shown in the following tables, and were evaluated according to the following criteria.

(Evaluation test)
(Gellation at low temperatures: Low temperature stability)
The prepared cosmetic preparations were frozen at -20°C for one day and then thawed at room temperature, and the state of the cosmetic preparations was evaluated according to the following criteria.
A: No gelation occurred and the condition was uniform. B: A slight gel film was formed on the surface of the cosmetic, but the condition was almost uniform.
C: Most of the cosmetic material has gelled and is in a non-uniform state.

(Sensory evaluation)
A panel of five female experts applied the prepared cosmetic preparations to the skin and evaluated them for smooth, fluffy feeling, moist feeling, and stickiness according to the following criteria.
(Skin feels smooth and soft after application)
A: Five panelists rated it as having a smooth and fluffy feel. B: Four panelists rated it as having a smooth and fluffy feel. C: Three panelists rated it as having a smooth and fluffy feel. D: Two or less panelists rated it as having a smooth and fluffy feel.

(Moisturizing feeling on skin after application)
A: Five panelists rated it as having a moist feeling. B: Four panelists rated it as having a moist feeling. C: Three panelists rated it as having a moist feeling. D: Two or less panelists rated it as having a moist feeling.

(Skin feels sticky after application)
A: Five panelists rated it as not sticky. B: Four panelists rated it as not sticky. C: Three panelists rated it as not sticky. D: Two or less panelists rated it as not sticky. The evaluation results are shown in Table 1 together with the formulation.

As shown in Table 1, the aqueous cosmetics of Examples 1 to 7 did not gel or were suppressed even under low temperature conditions, and the skin after application had a smooth and fluffy feel, and an ideal feel was obtained that was moist but not sticky. Since gelation did not occur or was suppressed even under low temperature conditions of -20°C, it is believed that gelation is also suppressed at room temperature (25°C). On the other hand, gelation occurred in Comparative Example 1, which was a formulation that did not contain nicotinamide, and gelation occurred in Comparative Example 2, which was a formulation with a high content of tamarind gum, and a smooth and fluffy feel was not obtained. Furthermore, gelation occurred in Comparative Example 3, which was a formulation with a low content of nicotinamide, and conversely, gelation did not occur in Comparative Example 4, which was a formulation with a high content of nicotinamide, but a sticky feel occurred after application.

Next, a similar evaluation was carried out with the oil-in-water cosmetic formulation shown in Table 2. As shown in Table 2, even with the oil-in-water cosmetic formulation, gelation did not occur even at low temperatures, and the skin felt smooth and fluffy after application, providing an ideal feel that was moist but not sticky.

(Prescription example)
Table 3 shows examples of the formulations of the cosmetic of the present invention. The present invention is not limited to these examples. The amounts of the ingredients are all expressed as mass % based on the total amount of the product.

Some of the embodiments of the present disclosure are described in the following items 1 to 9.
[Item 1]
For all cosmetics,
(A) 0.001 to 0.8% by mass of tamarind gum;
(B) a polyhydric alcohol;
(C) 1 to 10% by mass of nicotinic acid or a derivative thereof;
A cosmetic comprising:
[Item 2]
2. The cosmetic according to item 1, wherein the blending amount of the polyhydric alcohol (B) is 3 to 25% by mass based on the total amount of the cosmetic.
[Item 3]
3. The cosmetic according to item 1 or 2, wherein a mass ratio of the tamarind gum (A) to the nicotinic acid or a derivative thereof (C) is 0.01 to 0.6.
[Item 4]
4. The cosmetic composition according to item 1, 2 or 3, wherein the (C) nicotinic acid or a derivative thereof is nicotinamide.
[Item 5]
5. The cosmetic preparation according to any one of items 1 to 4, wherein the polyhydric alcohol (B) is at least one selected from the group consisting of glycerin, butylene glycol, and dipropylene glycol.
[Item 6]
6. The cosmetic preparation according to any one of items 1 to 5, further comprising (D) an acrylic acid-based polymer.
[Item 7]
The cosmetic preparation according to any one of items 1 to 6, further comprising (E) at least one polymer selected from the group consisting of a homopolymer of 2-methacryloyloxyethyl phosphorylcholine and a copolymer of 2-methacryloyloxyethyl phosphorylcholine and a methacrylic acid ester.
[Item 8]
8. The cosmetic preparation according to any one of items 1 to 7, which is an aqueous cosmetic preparation.
[Item 9]
8. The cosmetic according to any one of items 1 to 7, which is an oil-in-water cosmetic.

Claims (9)

A cosmetic preparation,
For all cosmetics,
(A) 0.01 to 0.8% by mass of tamarind gum;
(B) 3 to 25% by mass of a polyhydric alcohol;
(C) 1 to 10% by mass of nicotinamide;
Including,
The cosmetic preparation is frozen at −20° C. for one day and then thawed at room temperature, and the cosmetic preparation does not gel at all.
Cosmetics. For all cosmetics,
(A) 0.01 to 0.8% by mass of tamarind gum;
(B) 3 to 25% by mass of a polyhydric alcohol;
(C) 1 to 10% by mass of nicotinamide ;
Including ,
Oil-in-water cosmetic. For all cosmetics,
(A) 0.01 to 0.8% by mass of tamarind gum;
(B) 3 to 25% by mass of a polyhydric alcohol;
(C) 1 to 10% by mass of nicotinamide;
Including ,
a mass ratio of the tamarind gum (A) to the nicotinamide (C) is 0.01 to 0.6;
Cosmetics. 3. The cosmetic according to claim 1, wherein a mass ratio of the tamarind gum (A) to the nicotinamide (C) is 0.01 to 0.6. 5. The cosmetic preparation according to claim 1, wherein the polyhydric alcohol (B) is at least one selected from the group consisting of glycerin, butylene glycol and dipropylene glycol. The cosmetic preparation according to any one of claims 1 to 5 , further comprising (D) an acrylic acid-based polymer. The cosmetic preparation according to any one of claims 1 to 6, further comprising (E) at least one polymer selected from the group consisting of a homopolymer of 2-methacryloyloxyethyl phosphorylcholine and a copolymer of 2-methacryloyloxyethyl phosphorylcholine and a methacrylic acid ester. The cosmetic preparation according to any one of claims 1 and 3 to 7 , which is an aqueous cosmetic preparation. The cosmetic composition according to any one of claims 1 and 3 to 7 , which is an oil-in-water cosmetic composition.