JP2020066623A - Cleansing composition - Google Patents

Abstract

To provide a cleansing composition which has excellent cleansing power even in a state where water is mixed, maintains transparency of appearance before and after water is mixed and has good rinsability during washing off.SOLUTION: There is provided a cleansing composition which comprises 5 to 35 mass% of the following component (A), 5 to 20 mass% of the following component (B), 10 to 35 mass% of the following component (C) and 10 to 40 mass% of the following component (D): (A) a polyoxyethylene (5 to 30) monofatty acid glyceryl, (B) a polyoxyethylene (5 to 30) glycerin, (C) a polyhydric alcohol having 2 to 6 carbon atoms and (D) an oily component which is liquid at 25°C.SELECTED DRAWING: None

Description

  The present invention relates to cleansing compositions. More specifically, the present invention maintains a high cleansing power even when wet with a small amount of water at the time of use, maintains the transparency of the appearance, and further has a good cleansing property when rinsed off. Regarding

  In recent years, oil-based cleansing cosmetics having a stronger cleansing power than water-based cleansing cosmetics have been widely used due to improved durability and water resistance of makeup. Since the oil-based cleansing cosmetic composition is composed of a large amount of oil-based components and a surfactant, it has good compatibility with makeup and has excellent cleansing power. However, when an oily cleansing cosmetic is used while the hands and face are wet, even if a small amount of water is mixed, it becomes an emulsified state, and the cleansing power may be significantly reduced. Furthermore, there is a drawback that the feeling of use is poor because the sticky feeling peculiar to the oily component remains on the skin during rinsing after cleansing.

  Under such a background, even when the skin is wet with a small amount of water, an oily cleansing cosmetic composition capable of maintaining a high cleansing power and maintaining excellent washability has been reported (Patent Document 1). 1). In addition, a cleansing cosmetic composition that has good compatibility with makeup even when used on wet skin, has an excellent cleansing effect, can be easily washed off with water, and has good storage stability has been reported (Patent Document 2). .

  On the other hand, in recent years, cosmetics having a high appearance transparency have been strongly demanded from the viewpoint of improving the added value such as the appearance of high-grade appearance and the use of high-purity components. However, the oil-based cleansing cosmetics in the prior art have an excellent cleansing power when mixed with water, but have a problem that the transparency of the appearance decreases, and the cleansing power and the transparency of the appearance when mixed with water are deteriorated. No oily cleansing cosmetic having both properties has been proposed.

JP, 2013-237646, A JP 2000-327529 A

  In view of the above circumstances, the object of the present invention is stable against emulsification and excellent in water resistance, so that the cleansing power is excellent even in a state where water is mixed, and the appearance is transparent before and after mixing water. It is intended to provide a cleansing composition which retains its properties and has good rinsability upon washing.

  As a result of intensive studies to solve the above problems, the present inventors have found that the above object can be achieved by using a specific nonionic surfactant, polyhydric alcohol and the like.

That is, the cleansing composition of the present invention contains the following component (A) in an amount of 5 to 35% by mass, component (B) in an amount of 5 to 20% by mass, component (C) in an amount of 10 to 35% by mass, and component (D). It is characterized by containing 10 to 40 mass%.
(A) Polyoxyethylene (5-30) mono-fatty acid glyceryl (B) Polyoxyethylene (5-30) glycerin (C) Polyhydric alcohol having 2 to 6 carbon atoms (D) Oily liquid at 25 ° C component

  Further, the cleansing composition of the present invention has an HLB of 2 to 6 as the component (E) and may contain 5 to 25 mass% of a nonionic surfactant having a polyhydric alcohol skeleton.

  In addition, the cleansing composition of the present invention may contain 0.1 to 10% by mass of an anionic surfactant as the component (F).

  According to the present invention, in recent years, in the field of oily cleansing cosmetics, which have come to be used more and more in response to improvement in durability and water resistance of makeup, it becomes an emulsified state when water is mixed, and cleansing Stable water resistance against emulsification, even when water is mixed, against the problem in the prior art that both the strength and the transparency of the appearance are reduced, and the feeling of use is poor during rinsing after cleansing. Since it has good compatibility with makeup, it has excellent cleansing power, and it can maintain the transparency of the appearance before and after mixing with water, so that it has a high-quality appearance and high-purity components. The added value of reminding use is improved and the rinseability when washed off is good, so the skin does not have the sticky feeling peculiar to oily components and the usability is good. It has the effect that.

  Hereinafter, the component (A) in the cleansing composition of the present invention will be described in order.

<Component (A) polyoxyethylene (5 to 30) monofatty acid glyceryl>
The present invention is characterized by using polyoxyethylene (5 to 30) monofatty acid glyceryl as the component (A).

Specific polyoxyethylene (5-30) monofatty acid glyceryl includes polyoxyethylene (capryl / capric acid) glyceryl, polyoxyethylene coconut oil fatty acid glyceryl, polyoxyethylene monococonut oil fatty acid glyceryl, polyoxyethylene lauric acid. Examples thereof include glyceryl, glyceryl polyoxyethylene oleate, polyoxyethylene glyceryl monomyristate, polyoxyethylene glyceryl monostearate, and polyoxyethylene glyceryl isostearate.
Among these, polyoxyethylene (capryl / capric acid) glyceryl, polyoxyethylene coconut oil fatty acid glyceryl, and polyoxyethylene monococonut oil fatty acid glyceryl are preferable.

  The compounding amount of the component (A) is 5 to 35% by mass, preferably 10 to 30% by mass, and more preferably 10 to 25% by mass. If it is less than 5% by mass, the cleansing force may decrease, and if it exceeds 35% by mass, the rinsability may decrease.

  The number in parentheses represents the number of moles of oxyethylene added, and the number of moles of oxyethylene added of the component (A) is 5 to 30, preferably 5 to 20, and more preferably 5 to 5. It is 10. If it is less than 5, a stable composition cannot be obtained, and if it exceeds 30, the cleansing power may decrease.

<Component (B) polyoxyethylene (5-30) glycerin>
The present invention is characterized by using polyoxyethylene (5 to 30) glycerin as the component (B).

  The blending amount of the component (B) is 5 to 20% by mass, preferably 5 to 15% by mass, and more preferably 10 to 15% by mass. If it is less than 5% by mass, a stable composition cannot be obtained, and if it exceeds 20% by mass, the transparency of the composition in a state in which water is mixed may decrease.

  The addition mole number of oxyethylene as the component (B) is 5 to 30, preferably 5 to 20, and more preferably 5 to 10. If it is less than 5, a stable composition cannot be obtained, and if it exceeds 30, it may cause stickiness and the rinsability may decrease.

  The ratio of (A) / (B) is preferably 1-5, more preferably 2-4. When the ratio of (A) / (B) is less than 1, the transparency of the composition in a state where water is mixed may decrease, and when it exceeds 5, the cleansing power may decrease.

<Component (C) Polyhydric alcohol having 2 to 6 carbon atoms>
One of the features of the present invention is to use a polyhydric alcohol having 2 to 6 carbon atoms as the component (C).

  Specific examples of the polyhydric alcohol having 2 to 6 carbon atoms include ethylene glycol, propylene glycol, dipropylene glycol, 1,3-butylene glycol, glycerin, diglycerin, glucose, maltose and sorbitol. Preferred are 1,3-butylene glycol and glycerin. These components (C) may be used alone or in an appropriate combination of two or more.

  The content of the component (C) is 10 to 35% by mass, preferably 15 to 30% by mass. If it is less than 10% by mass, a stable formulation cannot be obtained, and the transparency of the composition in a state of being mixed with water may be lowered. If it exceeds 35% by mass, rinsability may be deteriorated. is there.

<Component (D) Oily component which is liquid at 25 ° C>
One of the features of the present invention is to use an oily component which is liquid at 25 ° C as the component (D).

  Examples of the oily agent which is liquid at 25 ° C. include polar oils such as ester oil and triglyceride, and non-polar oils such as hydrocarbon oil and silicone oil. Among them, it is preferable to contain polar oil such as ester oil and triglyceride.

Ester oil that is liquid at 25 ° C. includes ethyl oleate, ethyl linoleate, isopropyl myristate, isopropyl palmitate, isopropyl isostearate, cetyl 2-ethylhexanoate, isocetyl 2-ethylhexanoate, and 2-ethylhexanoic acid. Stearyl, isostearyl 2-ethylhexanoate, cetyl palmitate, 2-ethylhexyl palmitate, 2-hexyldecyl isostearate, isostearyl isostearate, trimethylolpropane triisostearate, myristyl myristate, cetyl myristate, myristic acid Octyldodecyl, isostearyl myristate, isocetyl myristate, hexyl laurate, decyl oleate, octyldodecyl oleate, isostearyl pivalate, iso Isopropyl terearate, isononyl isononanoate, 2-ethylhexyl isononanoate, isodecyl isononanoate, isotridecyl isononanoate, octyldodecyl erucate, neopentyl glycol didecanoate, pentaerythrityl tetraethylhexanoate, diisostearyl malate, triethylhexanoate trioxide. Methylolpropane, didecyl adipate, cholesteryl isostearate, batyl isostearate, monohydroxystearic acid hydrogenated castor oil, lanolin fatty acid isostearyl, lanolin fatty acid isopropyl, lanolin fatty acid octyldodecyl, cetyl ricinoleate, ropylene glycol, propylene glycol dinonanoate, di (Capryl / capric acid) propylene glycol, diisostearate propylene glycol Le, etc. dioleate propylene glycol can be exemplified. These ester oils may be used alone or in combination of two or more.
Preferred ester oils include, for example, cetyl 2-ethylhexanoate, isocetyl 2-ethylhexanoate, isopropyl palmitate, 2-ethylhexyl palmitate, isopropyl isostearate, 2-hexyldecyl isostearate, octyldodecyl myristate, myristic acid. Examples include isopropyl, isostearyl myristate, isocetyl myristate, isononyl isononanoate, 2-ethylhexyl isononanoate, isodecyl isononanoate, and isotridecyl isononanoate.

Liquid triglycerides at 25 ° C include higher fatty acids having 6 or more carbon atoms such as caproic acid, caprylic acid, capric acid, 2-ethylhexanoic acid, isotridecanoic acid, isopalmitic acid, isostearic acid, eicosanoic acid, and oleic acid, and glycerin. And other oils and fats such as olive oil, sunflower oil, safflower oil, castor oil and camellia oil; As such a triglyceride, these 1 type (s) or 2 or more types can be used.
Preferred triglycerides include, for example, triglycerides of higher fatty acids having 6 to 10 carbon atoms such as caproic acid, caprylic acid, capric acid, and 2-ethylhexanoic acid and glycerin, or triglycerides of glycerin with a mixture of these higher fatty acids, such as triglyceride. (Capryl / capric acid) glyceride, glyceryl tri-2-ethylhexanoate can be mentioned.

Hydrocarbon oils that are liquid at 25 ° C include liquid paraffin, hydrogenated polyisobutene, hydrogenated polydecene, squalane, squalene, pristane, light isoparaffin, light liquid isoparaffin, heavy liquid isoparaffin, liquid isoparaffin, tetradecene, isohexadecane, isododecane, Examples include α-olefin oligomers.
Preferred hydrocarbon oils are, for example, liquid paraffin, hydrogenated polyisobutene and squalane. These hydrocarbon oils may be used alone or in combination of two or more.

  Examples of the liquid silicone oil at 25 ° C. include dimethicone, cyclomethicone and phenyldimethicone. A preferred silicone oil is, for example, cyclomethicone such as decamethylcyclopentasiloxane. These silicone oils may be used alone or in combination of two or more.

  The content of the component (D) is 10 to 40% by mass, preferably 15 to 35% by mass, and particularly preferably 20 to 30% by mass. If it is less than 10% by mass, the cleansing force may be insufficient, and if it exceeds 40% by mass, the rinsability may be deteriorated.

<Nonionic surfactant having component (E) HLB of 2 to 6>
The cleansing composition of the present invention may contain a nonionic surfactant having an HLB of 2 to 6 as the component (E). By using the component (E), the cleansing power is improved and an excellent effect of rinsing at the time of washing can be obtained.

  The HLB of the component (E) is 2 to 6, preferably 3 to 6, and more preferably 4 to 6. If the HLB is less than 2, a stable composition cannot be obtained, and if the HLB is more than 6, it may not be possible to provide sufficient cleansing power.

Specific nonionic surfactants having HLB of 2 to 6 include polyoxyethylene hydrogenated castor oil such as PEG-2 hydrogenated castor oil and PEG-10 hydrogenated castor oil, polyoxyethylene (5 15) Glyceryl tri (capryl / caprate), polyoxyethylene (5-15) glyceryl tricoconut oil fatty acid, polyoxyethylene (5-10) glyceryl trioleate, polyoxyethylene (5-10) glyceryl tristearate, Examples thereof include polyoxyethylene (5-10) glyceryl triisostearate.
Of these, polyoxyethylene (5-10) tri (capryl / capric acid) glyceryl and polyoxyethylene (5-10) tricoconut oil fatty acid glyceryl are particularly preferable from the viewpoint of cleansing power.

  The content of the component (E) is preferably from 5 to 25% by mass, more preferably from 10 to 20% by mass, since the cleansing power and rinsing property can be further enhanced.

Here, the above-mentioned HLB value can be calculated by the following formula proposed by Kawakami (Kawakami: Science, 23,546 (1953)).
HLB value = 7 + 11.7 · Log (MW / MO)
(Here, MW represents the molecular weight of the hydrophilic group and MO represents the molecular weight of the lipophilic group.)

<Component (F) anionic surfactant>
The cleansing composition of the present invention may contain an anionic surfactant as the component (F). By using the component (F), the cleansing power is improved, and an excellent effect of rinsing at the time of washing can be obtained.

Examples of the anionic surfactant include alkyl sulfates, polyoxyethylene alkyl ether sulfates, alkyl amide ether sulfates, polyoxyethylene amide ether sulfates, polyoxyethylene alkyl ether acetates, alkyl phosphates, and polyoxy salts. Ethylene alkyl ether phosphate, α-olefin sulfonate, higher fatty acid salt, N-acyl amino acid salt, N-acyl isethionate, N-acyl methyl taurine salt, N-acyl polypeptide salt, alkyl sulfosuccinate, etc. Can be mentioned. Among these, polyoxyethylene alkyl ether sulfate, N-acylmethyl taurine salt, and N-acyl amino acid salt are preferable. From the viewpoint of cleansing power, the number of carbon atoms of these alkyl groups or acyl groups is preferably 10-18, and particularly preferably 12-14. The alkyl group and the acyl group may be derived from saturated fatty acids, unsaturated fatty acids, or mixed fatty acids which are a mixture thereof. Examples of the mixed fatty acid include coconut oil fatty acid and palm kernel oil fatty acid.
Examples of these counterions include alkali metal salts, alkaline earth metal salts, ammonium salts, alkanolamine salts, amino acid salts and the like.
Specific examples of the anionic surfactant of the component (F) include, for example, PEG (2) sodium lauryl ether sulfate, cocoyl methyl taurine sodium, cocoyl methyl taurine taurine sodium, cocoyl glutamate sodium, and lauroyl methyl alanine sodium. . Of these, cocoyl methyl taurine sodium, cocoyl methyl taurine taurine sodium, and lauroyl methyl alanine sodium are particularly preferable from the viewpoints of cleansing power and rinsing property at the time of washing.
As the component (F), one or more selected from the above anionic surfactants can be used.

  The blending amount of the component (F) is preferably 0.1 to 10% by mass, because the cleansing power and rinsing property can be further enhanced, more preferably 0.1 to 5% by mass, and further preferably Is 0.5 to 2% by mass.

  The water resistance in the present invention is assumed to be used in a bathroom or the like, and means that the cleansing composition retains the emulsion stability even when water is mixed therein and the cleansing power is not lowered.

  The cleansing composition of the present invention further comprises, if necessary, various components generally used in cosmetics, for example, alcohols other than the component (C) such as ethanol, within a range that does not impair the effects of the present invention, Vitamins, UV absorbers, water-soluble polymers, antioxidants, anionic surfactants, cationic surfactants, amphoteric surfactants, other nonionic surfactants, sequestering agents, carboxyvinyl polymers, etc. Thickeners, preservatives, pigments, powders, etc. can be added.

  Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto. Unless otherwise specified, all compounding amounts are% by mass.

(Preparation of sample)
The cleansing compositions of Examples 1 to 12 and Comparative Examples 1 to 6 were prepared according to the compositions shown in Tables 1 and 2, and the following evaluation results are also shown in Tables 1 and 2, respectively. The values in parentheses for the components (A) and (B) in Tables 1 and 2 represent the number of moles of oxyethylene added.

(A) Appearance Evaluation Immediately After Preparation Each sample obtained in Examples and Comparative Examples is a glass sample bottle (mouth inner diameter × body diameter × height: Φ41 × Φ55 × 95 mm
), The appearance immediately after preparation was visually observed and evaluated according to the following criteria.
◯: It is transparent.
Δ: Slightly turbid but transparent, or turbid and not transparent (emulsified).

(B) Appearance evaluation of cleansing composition in a state of mixing water With respect to each sample obtained in Examples and Comparative Examples, the appearance when 20% by weight of water was added and mixed based on the total weight The sample was visually observed in the same manner as immediately after the preparation and evaluated according to the following criteria.
A: Transparent.
◯: It is slightly cloudy but transparent.
B: Turbid and not transparent (emulsified).

(C) Evaluation of Detergency of Cleansing Composition with Water Mixed In order to confirm the cleansing power when the skin is wet with water, an eyeliner (Cofredoll ( (Registered trademark), manufactured by Kanebo Cosmetics Co., Ltd.) were evenly applied to form a circle having a diameter of 2 cm, and dried in a constant temperature and constant humidity chamber at 25 ° C. and a relative humidity of 50% for 30 minutes. Wet hand use was measured and for each sample, 20 wt% water, based on total weight, was added and mixed. 50 mg of each was soaked with a finger for 5 seconds into a circle of a dry eyeliner, and then rinsed with running water. After the natural drying, the detergency of the eyeliner was evaluated with a spectrocolorimeter (CM-2500c, Konica Minolta) according to the following evaluation criteria. The average detergency was evaluated as 70% or more as “⊚”, less than 70% as 50% or more as “◯”, and less than 50% as “Δ”.
Detergency = (1- (ΔE2) / (ΔE1)) × 100
ΔE1 (color difference between makeup before washing and inside of upper arm)
ΔE2 (color difference between makeup after washing and inside of upper arm)

(D) Evaluation of rinsability After performing the cleaning power evaluation of (c) above, each panelist evaluated the state immediately after rinsing with warm water of about 37 ° C. for 5 seconds, based on the following evaluation criteria. And gave a score. The total score of 10 panelists evaluated 25 points or more as “⊚”, 18 points or more and less than 25 points as “◯”, and less than 18 points as “Δ”.
3: The oil content was completely washed out, and it had a very refreshing feel.
2: Almost all the oil was washed off, and it had a refreshing feel.
1: Some amount of oil remains, and it feels slightly sticky.

  As is clear from Table 1, all the cleansing compositions of Examples 1 to 12 had excellent performance.

  In the cleansing composition of Comparative Example 1 which does not satisfy the requirement of the component (A) of the present invention, the appearance of the cleansing composition in the state of being mixed with water was poor and the rinsability was poor.

  The cleansing composition of Comparative Example 2, which did not satisfy the requirements of the components (A) and (B) of the present invention, had a poor appearance immediately after preparation and in a state of being mixed with water, and further had a significantly reduced detergency.

  The cleansing composition of Comparative Example 3 which did not satisfy the requirement of the component (B) had a poor appearance of the cleansing composition in a state where water was mixed.

  Regarding Comparative Examples 4 and 5 which did not satisfy the requirement of the component (C), the appearance of the cleansing composition in which water was mixed was deteriorated. In Comparative Example 4, the rinsability was further deteriorated.

  The cleansing composition of Comparative Example 6 which did not satisfy the requirement of the component (D) had a significantly reduced detergency.

[Example 13: Formulation of cleansing liquid]
As Example 13, Table 3 shows a specific formulation example of a cleansing liquid (cleansing composition) containing other components. By preparing Example 13 at room temperature, the transparency of the appearance is maintained before and after the mixing of water, the cleansing power is excellent even in the mixed state of water, and the rinsing property at the time of rinsing is good. I got a liquid.

[Example 14: Formulation example of cleansing gel]
As Example 14, Table 4 shows a specific formulation example of a cleansing gel (cleansing composition) containing other components. By preparing Example 14 at room temperature, before and after mixing of water, the transparency of the appearance is maintained, the cleansing power is excellent even in the mixed state of water, and the cleansing property when rinsing at the time of washing is good. I got a gel.

Claims (3)

It is characterized by containing 5 to 35% by mass of the following component (A), 5 to 20% by mass of the component (B), 10 to 35% by mass of the component (C), and 10 to 40% by mass of the component (D). And a cleansing composition.
(A) Polyoxyethylene (5-30) mono-fatty acid glyceryl (B) Polyoxyethylene (5-30) glycerin (C) Polyhydric alcohol having 2 to 6 carbon atoms (D) Oily liquid at 25 ° C component   Further, the cleansing composition according to claim 1, wherein the component (E) has HLB of 2 to 6 and contains 5 to 25% by mass of a nonionic surfactant having a polyhydric alcohol skeleton.   In addition, the cleansing composition according to claim 1 or 2, containing 0.1 to 10 mass% of an anionic surfactant as the component (F).