JP5700770B2 - Skin cleanser composition - Google Patents

Description

  The present invention relates to a skin cleansing composition.

  An ideal skin condition is that the surface of the skin is fine and smooth. However, in reality, it is difficult to maintain such a skin state due to stimulation from the external environment, skin aging and inflammation. Therefore, various cosmetic compositions have been proposed in order to obtain an ideal skin state.

  One example is a skin cleanser. Skin cleansers have an old stratum corneum that causes roughness on the skin surface (the stratum corneum that exists on the outermost surface of the skin, which divides cells from the basal layer of the skin, turns into the stratum corneum, and is released as dirt. It is required to remove the stratum corneum where the adhesive part of the stratum corneum breaks, floats, or turns white.

  Specific examples of such skin cleansing agents include skin cleansing agents containing a granular material (scrub agent) (for example, Patent Documents 1 and 2). A skin cleanser formulated with a scrub agent is highly cleanable and can remove an old stratum corneum. Therefore, it is expected to eliminate the rough surface of the skin after cleaning. For example, Patent Document 1 discloses a re-roughened paste cosmetic containing a granule having an average particle diameter of 150 to 10 μm in order to remove an old stratum corneum.

JP 2005-60356 A JP-A-6-239733

  However, in a skin cleanser using a conventional scrub agent, the scrub agent rubs the stratum corneum so that only the stratum corneum contacted with the scrub agent can be removed as a lump. For this reason, the stratum corneum where the scrub agent did not hit was not removed, and the stratum corneum of the entire skin could not be removed uniformly. Further, the amount of stratum corneum removed was insufficient, and a smooth feeling on the skin surface was not obtained.

  The present invention has been made in view of such circumstances, and provides a skin cleansing composition capable of uniformly removing an old stratum corneum by washing and obtaining a feeling that the skin surface after washing is smooth. It is.

  The present inventors have provided a skin cleanser that can solve the above-mentioned problems by using a combination of a specific anionic surfactant and glyceryl ether 2-ethylhexyl in combination with a specific higher alcohol or a specific monoglycerin fatty acid ester. It was found that an agent composition was obtained.

That is, according to the present invention,
The following components (A) to (D):
(A) C12-C22 fatty acid or salt thereof 0.25% by mass or more and 25% by mass or less,
(B) Glyceryl ether 2-ethylhexyl 0.04% by mass to 10% by mass,
(C) (C-1) a higher alcohol having a hydrocarbon group having 8 to 16 carbon atoms and / or (C-2) a monoglycerin fatty acid ester having a hydrocarbon group having 8 to 16 carbon atoms 0.02% by mass or more 5 mass% or less,
(D) contains water,
0.92 ≧ (A) / ((A) + (B) + (C)) ≧ 0.68 (mass ratio)
And the skin cleansing composition whose pH when diluted with water so that it may become 5 mass% is the range of 7-12 (25 degreeC) is provided.

  ADVANTAGE OF THE INVENTION According to this invention, a skin cleansing composition which can remove an old stratum corneum uniformly and can obtain the smooth feeling of the skin surface which has not been obtained can be provided.

It is a triangular diagram showing the mass ratio and effect of components (A), (B), and (C) in Examples and Comparative Examples.

  Hereinafter, the skin cleansing composition of the present invention will be described.

[Component (A)]
The component (A) of the present invention is a fatty acid having 12 to 22 carbon atoms or a salt thereof, and has a linear or branched alkyl group. In particular, a linear fatty acid having 12 to 16 carbon atoms or a salt thereof is preferable from the viewpoint of foaming properties and the effect of removing the stratum corneum. Specific examples include lauric acid, myristic acid, palmitic acid, stearic acid, and the like, and lauric acid and myristic acid are more preferable.

  Examples of the salt of component (A) include alkali metals such as sodium and potassium; ammonium; alkanolamines such as aminomethylpropanol; and basic amino acids such as lysine and arginine. Among these, alkali metals such as potassium, and ammonium are preferable from the viewpoint that the skin cleanser composition of the present invention is less colored over time.

  The content of the component (A) is preferably 0.25% by mass or more and 25% by mass or less from the viewpoint of detergency with respect to the entire skin cleansing composition of the present invention. Furthermore, it is more preferable to set it as the following content by a usage method.

  As a method of use, (i) when the skin cleanser composition of the present invention is picked up, diluted with water and used in a lather, the component (A) is greater than 5% by mass and 25% by mass from the viewpoint of foaming properties. It is preferable to contain below. (Ii) When the skin cleansing composition of the present invention is used as it is without being diluted, it is preferable to contain 0.25% by mass or more and 5% by mass or less of the component (A). Specifically, it is a case where the skin cleansing composition of the present invention is put into a container such as a foamer and discharged in the form of foam and used without being diluted.

[Component (B)]
Component (B) of the present invention is glyceryl ether 2-ethylhexyl. It is important that the component (B) is in a solubilized state by forming micelles with the component (A) together with the component (C) described later. The skin cleansing agent in this state interacts with the stratum corneum surface and has an action of removing the stratum corneum.

  The content of the component (B) is preferably 0.04% by mass or more and 10% by mass or less, more preferably 0.04%, based on the entire skin cleansing composition of the present invention, from the viewpoint of obtaining the ability to remove stratum corneum. The mass is 4% by mass or more.

[Component (C)]
Component (C) of the present invention includes (C-1) a higher alcohol having a hydrocarbon group having 8 to 16 carbon atoms and / or (C-2) a monoglycerin fatty acid having a hydrocarbon group having 8 to 16 carbon atoms. Ester. Component (C) forms micelles with component (A) and component (B) and is solubilized to enhance the action of component (C) on the stratum corneum surface, removing the stratum corneum It is possible to enhance the action to do.

  (C-1) Examples of the higher alcohol having a hydrocarbon group having 8 to 16 carbon atoms include capryl alcohol, caprin alcohol, lauryl alcohol, myristyl alcohol, cetyl alcohol and the like.

  (C-2) As monoglycerol fatty acid ester having a hydrocarbon group having 8 to 16 carbon atoms, monoglycerol caprylate, monoglycerol caprate, monoglycerol laurate, monoglycerol myristate, monoglycerol palmitic Examples include acid esters.

  From the viewpoint of highly penetrating into the skin (horny layer) and improving detergency, the component (C-1) is preferably lauryl alcohol or myristyl alcohol, and the component (C-2) is preferably monoglycerin caprate. It is mentioned as a thing.

  The content of the component (C) is preferably 0.02% by mass or more and 5% by mass with respect to the entire skin cleansing composition of the present invention, from the viewpoint of good detergency, foaming and prevention of melting. It is as follows.

[Component (D)]
Component (D) water is a solvent and becomes the balance of the skin cleanser composition. The skin cleansing composition of the present invention can be appropriately adjusted and used according to the method of use, usage form, and the like.

  Here, according to the present invention, when the components (A) to (D) are mixed, the components (A), (B), and (C) form micelles and become a solubilized transparent solution. This is important from the viewpoint of uniformly removing the stratum corneum. Furthermore, from the viewpoint of obtaining a high stratum corneum removal ability, it is more preferable that the cleaning liquid is in a transparent state while being washed using the skin cleansing composition of the present invention and further rinsed with water. preferable. The details of this mechanism are not clear, but are presumed as follows.

  When the cleaning solution becomes cloudy, it means that the cleaning particles formed by the components (A), (B), and (C) are large. This indicates that the cleaning particles hardly penetrate between the stratum corneum, indicating that the cleaning properties of the old stratum corneum are deteriorated. Therefore, it is important that the cleaning liquid does not become cloudy and is maintained transparent while being cleaned using the skin cleanser composition of the present invention.

  Therefore, in order for the skin cleansing composition of the present invention to maintain a transparent solution during the cleaning process, it is important that the mass ratio of the components (A) to (C) satisfies the relationship of the following formula (1). .

  0.92 ≧ (A) / ((A) + (B) + (C)) ≧ 0.68 (mass ratio) (1)

  Furthermore, it is more preferable that the mass ratio of the components (A) to (C) satisfies the relationship of the following formula (2) from the viewpoint of enhancing the ability to remove the old stratum corneum.

  0.82 ≧ (A) / ((A) + (B) + (C)) ≧ 0.68 (mass ratio) (2)

  By using the components (A) to (C) at the mass ratio as described above, the stratum corneum cells that have become old, floated, or turned white can be removed cleanly.

  In addition, from the viewpoint of forming a transparent solution when the components (A) to (D) are mixed or used, the components (B) and (C) satisfy the relationship of the following formula (3) or (4). More preferred.

(B) / ((A) + (B) + (C)) ≧ 0.1 (mass ratio) (3)
(C) / ((A) + (B) + (C)) ≧ 0.07 (mass ratio) (4)

  The present inventor evaluated a skin cleanser formulated with a conventional scrub agent. After rinsing the skin with a skin cleanser formulated with a scrub agent, the rinse solution was observed with a microscope, and it was observed that the cells were in a lump state in which many stratum corneum cells were bound. This is considered to indicate that when the scrub agent hits the skin surface, the scrub agent touches and removes the stratum corneum. And the stratum corneum of the part which the scrub agent did not hit will not be removed, and it can be said that the stratum corneum of the whole skin cannot be removed uniformly. Further, when the stratum corneum is removed in this way, the skin feel is not improved so much and the smooth feeling is not maintained.

  On the other hand, after rinsing with the skin cleansing composition of the present invention, when the rinse solution was observed with a microscope, the clumped stratum corneum was hardly observed, and it was observed that the stratum corneum cells were finely divided. Furthermore, when the skin cleanser composition of the present invention is compared with a cleanser composition using a scrub agent, the amount of horny layer removed is higher when washed with the skin cleanser composition of the present invention. confirmed. Moreover, the skin feeling after washing | cleaning turned out that the direction of the skin wash | cleaned with the skin cleaning composition of this invention is excellent also in the sustainability of a smooth feeling. As a result, in the skin cleansing composition of the present invention, the old stratum corneum is uniformly removed, and as a result, the lift of the stratum corneum considered to be caused by the old stratum corneum and the rough feeling of the skin due to turning disappear, and the skin is smooth. It is thought that a touch can be obtained. Furthermore, since the old stratum corneum is removed uniformly, it is considered that the feeling of slipperiness over time persists.

  Further, as described in Patent Document 2, a skin cleanser containing a scrub agent for removing the stratum corneum is tasted by a person, and the scrub agent is a stimulus when used, or the type of scrub agent Depending on the case, a foreign body sensation may occur. However, the skin cleanser composition of the present invention can provide a high stratum corneum removal amount without using such a scrub agent.

[Component (E)]
The skin cleansing composition of the present invention preferably contains component (E) an alkyl glucoside having a hydrocarbon group having 8 to 16 carbon atoms from the viewpoint of foaming. Alkyl glucoside is a nonionic surfactant derived from saccharides and higher alcohols, and examples thereof include those represented by the following formula (5).

R—O (CH ₂ CH ₂ O) _m —Z _x (5)
(In formula (5), R represents an alkyl group having 6 to 20 carbon atoms, m represents an average number of 0 to 10, Z represents a sugar residue having 5 or 6 carbon atoms, and x represents an average. The number of 1-5 is shown.)

  Component (E) can be contained in the skin cleansing composition of the present invention in an amount of 1% by mass to 12% by mass, and has the effect of speeding up foaming during washing and changing the feel of the foam.

[Other ingredients]
The skin cleansing composition of the present invention can contain other surfactants used in ordinary skin cleansing agents in addition to the above components. For example, anionic surfactants such as alkylbenzene sulfonic acid, α-olefin sulfonate, alkane sulfonate, α-sulfo fatty acid ester salt, monoalkyl phosphate ester salt, acylglycine, acyl-L-glutamate; Nonionic surfactants such as alkylene alkyl ethers, fatty acid mono- or dialkanolamides, polyoxyalkylene type block polymers; cationic surfactants such as quaternary ammonium salts; carbobetaines, sulfobetaines, imidazolinium betaines And amphoteric surfactants such as hydroxybetaine and fatty acid amide betaine.

  Furthermore, the skin cleansing composition of the present invention can contain various components used in a normal skin cleansing agent, if necessary. For example, humectants such as propylene glycol, dipropylene glycol, glycerin and sorbitol; viscosity modifiers such as methylcellulose and polyoxyethylene glycol distearate; bactericides such as triclosan and trichlorocarban; Inflammatory agents; preservatives such as methylparaben, butylparaben, phenoxyethanol, benzoate; other pigments, fragrances, ultraviolet absorbers, antioxidants, and the like can be appropriately contained.

  Moreover, the skin cleansing composition of the present invention has a pH of 7 or more and 12 or less at 25 ° C., more preferably 8 when diluted with water so as to be 5% by mass from the viewpoint of detergency. The range is 10 or less.

  The skin cleansing composition of the present invention can be used for facial cleansers, cleansing agents, makeup removers, shaving foams, body cleansing agents and the like. In particular, it is useful as a face wash.

  The dosage form of the skin cleansing composition of the present invention is not particularly limited, and may be cream, liquid, gel, pump foam or the like.

  It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.

  EXAMPLES Next, although an Example and a comparative example demonstrate this invention further more concretely and in detail, this invention is not limited by this Example.

(Examples 1-14, Comparative Examples 1-8)
About the skin cleansing agent of the composition shown to Tables 1-3, it manufactured with the following manufacturing method, and the measurement of the stratum corneum removal amount and sensory evaluation were performed. Moreover, the pH at 25 ° C. when the skin cleanser was diluted with water to 5% by mass was measured. The results are shown in Tables 1 to 3.

<Manufacturing method>
An aqueous solution obtained by adding potassium hydroxide to purified water was heated to 75 ° C. To this aqueous solution, a fatty acid having a hydrocarbon group having 12 to 22 carbon atoms preliminarily dissolved at 70 ° C. was added, and then a higher alcohol and a monoglycerin fatty acid ester were added, and all were dissolved and made uniform. Furthermore, glyceryl ether 2-ethylhexyl and alkyl glucoside were added and stirred until it was completely uniform. Then, it cooled to room temperature and obtained the skin cleansing agent. In Comparative Example 4, an aqueous solution obtained by adding potassium hydroxide to purified water was heated to 75 ° C. To this aqueous solution, a fatty acid having a hydrocarbon group having 12 to 22 carbon atoms preliminarily dissolved at 70 ° C. was added, and then scrub was added and stirred until uniform. Then, it cooled to room temperature and obtained the skin cleansing agent.

<Measurement of stratum corneum removal amount>
(I) When the content of component (A) (% by mass)> 5 (% by mass) A cylindrical glass cup (3 cmφ in contact with skin, volume 30 mL) is attached to the inner side of the forearm and fixed with a band. did. Next, 5 mL of the skin cleanser obtained in Examples and Comparative Examples diluted 20-fold with ion-exchanged water is poured into a cup so as not to leak, and 30 to 1 minute so that the liquid does not spill. Vibration was applied by shaking the arm back and forth at a speed of about 60 times, and the liquid in the cup was continuously stirred for 1 minute. Subsequently, all the stirred liquid is collected in a glass tube with a volume of 10 mL, and is vibrated so that the liquid becomes uniform with a vibrator. Then, 1 mL of the liquid is collected and placed in a tube, and centrifuged (10,000 rotations, Centrifugal force (5,200 × g) was applied for 10 minutes. Collect 800 μL of the supernatant, discard it, and after stirring, collect 20 μL, mix with 20 μL of cell stain (equal mixture of 5% crystal violet and 5% aqueous solution of chlorine fuchsine). The number of stratum corneum cells was counted with the Kelturk type). Converted from the area where the skin was in contact with the liquid, it was calculated as the number of stratum corneum cells per unit skin area, and was taken as the number of stratum corneum removal. This procedure was repeated three times, and the average value was calculated as the amount of stratum corneum removed.

(Ii) In the case of 0.1 (mass%) ≦ component (A) content (mass%) ≦ 5 (mass%) A cylindrical glass cup on the inner side of the forearm (contact part with skin is 3 cmφ, volume 30 mL) was attached and fixed with a band. Next, 5 ml of skin cleansing agent is poured into the cup so as not to leak, and vibration is applied by shaking the arm back and forth at a speed of about 30 to 60 times per minute so that the liquid does not spill. The liquid in the cup was continuously stirred. Subsequently, all the stirred liquid is collected in a glass tube with a volume of 10 mL, and is vibrated so that the liquid becomes uniform with a vibrator. Then, 1 mL of the liquid is collected and placed in a tube, and centrifuged (10,000 rotations, Centrifugal force (5,200 × g) was applied for 10 minutes. Collect 800 μL of the supernatant, discard it, and after stirring, collect 20 μL, mix with 20 μL of cell stain (equal mixture of 5% crystal violet and 5% aqueous solution of chlorine fuchsine). The number of stratum corneum cells was counted with the Kelturk type). Converted from the area where the skin was in contact with the liquid, it was calculated as the number of stratum corneum cells per unit skin area, and was taken as the number of stratum corneum removal. This procedure was repeated three times, and the average value was calculated as the amount of stratum corneum removed.

(Iii) Case of containing scrub A cylindrical glass cup (3 cmφ in contact with skin, volume 30 mL) was attached to the inner side of the forearm and fixed with a band. Next, when the component (A) is contained in an amount of 5% by mass or more, 5 mL of a 20-fold diluted skin cleanser, or when the component (A) is contained in an amount of less than 5% by mass, the skin Pour 5 mL of cleaning agent into the cup so that it does not leak, and use a stick made of Teflon (registered trademark) or glass with a rounded tip to rub the skin and scrub inside the cup. The massage was performed for 1 minute. Subsequently, all the stirred liquid is collected in a glass tube with a volume of 10 mL, and is vibrated so that the liquid becomes uniform with a vibrator. Then, 1 mL of the liquid is collected and placed in a tube, and centrifuged (10,000 rotations, Centrifugal force (5,200 × g) was applied for 10 minutes. Collect 800 μL of the supernatant, discard it, and after stirring, collect 20 μL, mix with 20 μL of cell stain (equal mixture of 5% crystal violet and 5% aqueous solution of chlorine fuchsine). The number of stratum corneum cells was counted with the Kelturk type). Converted from the area where the skin was in contact with the liquid, it was calculated as the number of stratum corneum cells per unit skin area, and was taken as the number of stratum corneum removal. This procedure was repeated three times, and the average value was calculated as the amount of stratum corneum removed.

<Sensory evaluation>
[Smooth feeling]
Five professional panelists were allowed to take 1 g of each of the skin cleansing agents obtained in the Examples and Comparative Examples, diluted with water and foamed on their hands, and then they were actually washed as if they were washing their face. . Thereafter, the smooth feeling of the skin immediately after towel drying was subjected to sensory evaluation based on (I) three-stage evaluation criteria. The total of the scores was used as the evaluation result of the smooth feeling.
For Examples 4 and 8 and Comparative Example 5, using a pump former container (YF-9413 Yoshino Kogyo Co., Ltd.), each skin cleansing agent was pumped out twice to actually wash the face. The feeling of smooth skin immediately after towel drying was subjected to sensory evaluation based on (I) three-stage evaluation criteria. The total of the scores was used as the evaluation result of the smooth feeling.

[Sustained smoothness]
In the same manner as above, 5 expert panelists were allowed to actually wash their face with 1 g of each of the skin cleansing agents obtained in the examples and comparative examples. Based on the sensory evaluation. The total of the scores was used as the evaluation result of the sustainability of the smooth feeling.
In addition, about Example 4, 8 and the comparative example 5, similarly to the above, using a pump former container (YF-9413 Yoshino Kogyo Co., Ltd.), the face is actually washed, and the skin feels smooth 8 hours after the face wash. Were subjected to sensory evaluation based on (I) three-stage evaluation criteria. The total of the scores was used as the evaluation result of the sustainability of the smooth feeling.

[Foam performance]
(I) When content (mass%) of component (A)> 5 (mass%) Five professional panelists have actually used each of the skin cleansing agents obtained in Examples and Comparative Examples. With regard to foaming when foaming with (II), sensory evaluation was performed based on (II) four-stage evaluation criteria. The sum of the scores was used as the evaluation result of the foam performance.

(Ii) In the case of 0.1 (mass%) ≦ component (A) content (mass%) ≦ 5 (mass%) 5 panelists were given the skin cleansing agents obtained in the examples and comparative examples. Using a pump former container (YF-9413 Yoshino Kogyo Co., Ltd.), extrude each skin cleanser twice as much as the pump and actually use it in the same way as washing your face. Sensory evaluation was performed based on the grade evaluation criteria. The sum of the scores was used as the evaluation result of the foam performance.

(I) Three-level evaluation criteria 2; skin is smooth 1; skin is slightly smooth 0; skin is not smooth

(II) 4-step evaluation standard 3; foaming is very good 2; foaming is slightly good 1; foaming is slightly bad 0; foaming is bad

<Measurement method of pH>
Each composition obtained in Examples and Comparative Examples was diluted 20-fold with ion-exchanged water to obtain a 5% by mass aqueous solution, and measured at 25 ° C. using a pH meter (manufactured by Horiba, Model No. F-22).

The symbols in the table indicate the following, respectively.
* 1 Glycerin fatty acid ester: Monoglycerin capric acid ester Product name: Sunsoft 760H
Manufacturer: Taiyo Chemical Co., Ltd. * 2 Alkyl glucoside: Alkyl (8-16) polyglucoside Product name: AG-10LK
Manufacturer: Kao Corporation * 3 Scrub: Material: Low-density polyethylene Product name: Flow beads CL-5007
Manufacturer: Sumitomo Seika Co., Ltd.

  The stratum corneum removal amount obtained from each of the above examples and comparative examples was evaluated in three stages, and in the triangular chart with the mass ratios of components (A), (B), and (C) in FIG. The evaluation results were plotted. In FIG. 1, the mass ratio of components (A), (B), and (C) is when the total amount of components (A), (B), and (C) is 20 mass%, and the remaining amount is water. The value of

The symbols in FIG.
◎; stratum corneum removal amount (× 10,000 cells / cm ² ) is 1.5 or more ○: stratum corneum removal amount (× 10,000 cells / cm ² ) is 0.8 or more and less than 1.5 ●; stratum corneum removal amount (× 10,000 cells / cm ² ) is less than 0.8

  From FIG. 1, the stratum corneum removal amount is 0.8 or more and 0.82 ≧ (A) in the range of 0.92 ≧ (A) / ((A) + (B) + (C)) ≧ 0.68. /((A)+(B)+(C))≧0.68, (B) / ((A) + (B) + (C)) ≧ 0.1 (mass ratio), (C) / ( It was found that the stratum corneum removal amount was 1.5 or more in the range of (A) + (B) + (C)) ≧ 0.07.

  Comparative Example 4 using the scrub agent had more stratum corneum removal than Comparative Example 1 using no scrub agent. In addition, it was found that each example had a larger amount of stratum corneum removal than Comparative Example 4, and a sufficient stratum corneum removal effect was obtained.

<Shape observation of stratum corneum>
Take 1.0 g of the skin cleanser obtained in Example 3 and Comparative Example 4, dilute with water and foam, massage the inner part of the forearm for 30 seconds, clean it, and then wash it with a cylindrical glass cup. (Contact part with skin was 3 cmφ, volume 30 mL) and fixed with a band. Next, pour 5 mL of water into the cup so that it does not leak, and use a stick made of Teflon (registered trademark) or glass with a round tip to prevent the liquid and liquid from spilling. The massage was carried out for 1 minute with the strength of rubbing. Collect all of the liquid in a glass tube with a volume of 10 mL and vibrate the liquid uniformly with a vibrator. Then, collect 1 mL of the liquid, put it in a tube, and centrifuge (10,000 rotations, centrifugal force 5,200 × g) was carried out for 10 minutes. Collect 800 μL of the supernatant, discard it, and after stirring, collect 20 μL, mix with 20 μL of cell staining solution (equal mixture of 5% crystal violet and 5% chlorine fuchsin solution), and place on a slide glass. The shape of the stratum corneum cells was observed with an optical microscope.

  As a result, when the cleaning agent of Example 3 was used, the horny layer cells existed one by one, whereas when the cleaning agent of Comparative Example 4 was used, the horny layer cells gathered. It was confirmed that it was present as a lump.

Claims (5)

The following components (A) to (D):
(A) C12-C22 fatty acid or salt thereof 0.25% by mass or more and 25% by mass or less,
(B) Glyceryl ether 2-ethylhexyl 0.04% by mass to 10% by mass,
(C) (C-1) a higher alcohol having a hydrocarbon group having 8 to 16 carbon atoms and / or (C-2) a monoglycerin fatty acid ester having a hydrocarbon group having 8 to 16 carbon atoms 0.02% by mass or more 5 mass% or less,
(D) contains water,
0.92 ≧ (A) / ((A) + (B) + (C)) ≧ 0.68 (mass ratio)
A is, 5 pH of like when diluted with water becomes mass% 7 to 12 Ri range der of (25 ° C.), a clear solution Der Ru skin cleansing composition.   Furthermore, the skin cleansing composition of Claim 1 which contains 1 to 12 mass% of alkyl glucoside which has a C8-C16 hydrocarbon group as a component (E).   The skin cleanser composition according to claim 1 or 2, wherein 0.82≥ (A) / ((A) + (B) + (C)) ≥0.68 (mass ratio).   The skin cleansing composition according to any one of claims 1 to 3, wherein (B) / ((A) + (B) + (C)) ≧ 0.1 (mass ratio).   Furthermore, it is (C) / ((A) + (B) + (C))> = 0.07 (mass ratio), The skin cleansing composition as described in any one of Claims 1 thru | or 4.

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