KR20050058762A - Cleansing composition - Google Patents

Abstract

The present invention relates to a cleansing composition having a high temperature stability and an improved cleaning action, comprising a high-carbon-fatty fatty acid soap having a relatively high melting point as a base material, and includes an ionic synthetic surfactant as an auxiliary base material, and has excellent high temperature stability. However, the present invention provides a cream or paste-like cleansing composition that does not generate skin troubles due to excessive degreasing and exhibits rich and fine foaming properties and keeps the skin soft and moist.

Description

Cleansing Composition {CLEANSING COMPOSITION}

The present invention relates to a cleansing composition having a high temperature stability and an improved cleaning action, and more particularly, excellent in high temperature stability, can form rich and fine bubbles, and clean without causing skin irritation due to excessive degreasing. The present invention relates to a cream or paste-like cleansing composition having high temperature stability and improved cleaning action.

In general, cleansing agents are general cosmetics used for cleanliness of the skin.It removes various wastes such as sweat, sebum, dust, and aging keratin, make-up residues and other contaminants on the skin surface to keep the skin condition moist and healthy. Say what you do.

Conventionally used cleansing agents are classified according to the cleaning ingredients used, and general fatty acid soaps using alkali salts of higher fatty acids, synthetic surfactant soaps using synthetic surfactants, and general fatty acid and synthetic surfactants are used. It can be summarized as three types of complex soaps that are mixed and used as base materials or auxiliary materials.

The fatty acid soap is a sodium, potassium or triethanol amine salt of a fatty acid having 8 to 18 carbon atoms, the composition is a fatty acid melts at a temperature of 45 ℃ or more, a double layer of an aqueous soap solution and free fatty acid is formed again Even lowering the temperature has the disadvantage that the original formulation can not be completely restored.

In order to solve the shortcomings of the conventional cleansing composition which is inferior in high temperature stability, an excessive amount of fatty acid stearic acid (Stearic acid) is used in excess, or a polymer or other formulation agent such as polyethylene glycol distearate, wax, etc. Is used as additive. However, when the stearic acid is used in an excessive amount, there is a strong detergency, but the foaming power is not only lowered, but also removes the sebum components attached to the skin as well as sebum components of the skin surface when the skin is dried. May cause irritation or temporary irritation to the skin.

In such a case, a nonionic surfactant such as polyethylene glycol dioleate or polyethylene glycol diisostearate may be used to prevent excessive sebum removal. (US Pat. No. 5,462,691) However, the nonionic interface used in the above method is used. Although the skin sensation is removed by the active agent and the skin feels moist after use, clean rinse cannot be expected because the fresh rinsing property is poor.

In order to solve the problems in the prior art as described above, an object of the present invention is to form a rich and fine bubbles even when using an excessive amount of fatty acid with high melting point, and cleansing is performed without causing skin irritation due to excessive degreasing. It is to provide a cream or paste-like cleansing composition excellent in high temperature stability.

In order to achieve the above object, the present invention

a) 10.0 to 40.0% by weight of C8-C18 higher fatty acid soap;

b) 0.5 to 20% by weight amino acid based anionic surfactant;

c) 0.5 to 20.0 weight percent of ionic synthetic surfactant;

d) 10.0 to 40.0 wt% of polyhydric alcohols; And

e) remaining water

It provides a cleansing composition comprising a.

Hereinafter, the present invention will be described in detail.

The present invention relates to a cleansing composition comprising a salt of a higher fatty acid having a high melting point as a base material for high temperature stability, and including an ionic synthetic surfactant as an auxiliary material to improve cleaning action.

The higher fatty acid soap used as the main cleaning agent in the present invention is a soap-type anionic surfactant made by neutralizing by selecting one or more kinds of higher fatty acids having 8 to 18 carbon atoms and mixing them with an alkali neutralizing agent in an appropriate amount. Potassium hydroxide, triethanolamine, etc. can be used for the said alkali neutralizer, These can be used individually or in mixture. The higher fatty acid soap is preferably stearic acid having 18 carbon atoms. The content of the higher fatty acid soap is preferably used in 10.0 to 40.0% by weight based on the total composition, more preferably 20 to 35% by weight. If the content of the higher fatty acid soap is less than 10% by weight, there is a problem that the ability to form fine bubbles falls, and when the content of more than 40% by weight, there is a problem that the overall soft cream-type aqueous cleanser phase can not be maintained.

The amino acid-based anionic surfactants exhibit excellent cleansing power and strong protective action against the skin, and minimize skin irritation by the massage effect and softness caused by foam upon cleansing. As the amino acid-based anionic surfactant, both acidic amino acid series such as N-acyl glutamate and neutral amino acid series of acylglycinates may be used, but at least one selected from acylglycinates which are neutral series It is more preferable to use. Examples of the amino acid anionic surfactants include sodium cocoyl glutamate, sodium lauroyl glutamate, sodium myristoyl glutamate, potassium lauroyl glutamate, potassium myristoyl glutamate, potassium cocoyl glycinate, and sodium coco. It can select and use 1 or more types from the group which consists of an iglycinate. The content of the amino acid-based anionic surfactant is used in 0.5 to 20.0% by weight based on the total composition. If the content of the amino acid-based anionic surfactant is less than 0.5% by weight, there is a problem that the ability to relieve skin irritation is inferior, and if it exceeds 20% by weight, the rinsing property is inferior.

The ionic surfactant is used to make fine and rich coarse bubble formation of the high-fat fatty acid soap together with the amino acid anionic surfactant, prevents skin pulling after washing the face and keeps the skin condition moist. The ionic synthetic surfactants include anionic surfactants such as acyl methyl taurate, acyl sarcosylate, sodium cocoyl isethionate, sodium lauryl sulfate, sodium lauryl phosphate and sodium lauryl sulfonate, and coca There are amphoteric surfactants such as midopropylbetaine, and the like. Preferably, a mixture of anionic and amphoteric surfactants is used. The content of the ionic synthetic surfactant is preferably used in 0.5 to 20.0% by weight based on the total composition. If the content of the ionic synthetic surfactant is less than 0.5% by weight, there is a problem that the effect of making the bubbles fine and rich does not appear, and if the content of more than 20% by weight, there is a problem in that the rinsability to wash off.

In addition, in the present invention, the polyhydric alcohol is used in parallel for the purpose of effectively improving the low temperature stability and high temperature stability of the formulation and preventing curing of the cleansing composition. As the polyhydric alcohol, one or more selected from the group consisting of glycerin, propylene glycol, butylene glycol, water-soluble polyethylene glycol and sorbitol can be used. The content of the polyhydric alcohols is preferably used in 10.0 to 40.0% by weight based on the total composition. When the content of the polyhydric alcohols is less than 10% by weight, there is a problem that the stability at low temperature is lowered, and when the content of the polyhydric alcohols exceeds 40% by weight, there is a problem that can not give a refreshing feeling.

The cleansing composition of the present invention includes a residual amount of purified water, and may include fragrance and other stabilizers as necessary.

The method for producing the cleansing composition of the present invention is not particularly limited, and preferably, the amino acid anionic surfactant, the ionic synthetic surfactant, and the polyhydric alcohol are completely mixed by heating, dissolving and stirring the higher fatty acid soap. It can be prepared by stirring.

The cleansing composition of the present invention exhibits a creamy or paste form.

As described above, the cleansing composition of the present invention uses high-fat fatty acid soap with high melting point in excess and has excellent high temperature stability, and includes an ionic synthetic surfactant as an auxiliary base to improve cleaning power and exhibit fine and rich foaming properties. After moist feeling and excessive degreasing can be prevented.

Hereinafter, preferred examples are provided to help understanding of the present invention. However, the following examples are provided only to make the present invention easier, and the present invention is not limited to the examples.

Examples 1 to 3 and Comparative Example 1

To prepare a cream or paste-like cleansing composition of Examples 1 to 3 and Comparative Example 1 according to the prior art in the composition and content as shown in Table 1, and looked at the stability, initial foaming force, skin irritation, feeling and the like by temperature The feeling of use was determined by the panel response to the cleansing power and skin condition after use.

ingredient Example 1 Example 2 Example 3 Comparative Example 1 Mystic Acid 6 6 6 16 Stearic acid 20 20 20 10 Lauric Acid 3 3 3 3 Atylene Glycol Monostearate 2 2 2 2 Glyceryl Stearate & PIG-100 Stearate 3 3 3 3 Polyethylene Glycol 5 5 5 5 glycerin 20 20 20 10 Butylene Glycol 10 10 10 5 Sorbitol 2 2 2 0 Cocamidopropyl Betaine 5 5 5 0.5 Acylmethyl taurate 0 5 5 0 Acyl Glycinate 10 0 10 0 Potassium hydroxide A reasonable amount A reasonable amount A reasonable amount A reasonable amount EDTA-3Na 0.05 0.05 0.05 0.05 incense A reasonable amount A reasonable amount A reasonable amount A reasonable amount Purified water To 100 To 100 To 100 To 100

Experimental Example 1: Temperature Stability

The stability by temperature was expressed by evaluating the degree of phase maintenance on the five-point scale, such as 0 ℃, 40 ℃, 45 ℃ of each Example and Comparative Example on a five-point scale and the results are shown in Table 2.

According to the phase maintenance level of the cream-type aqueous cleansing, 5 points are excellent, 4 points if there is a slight change in hardness, and 3 points are changed if the hardness is maintained, 3 points are changed if the formulation is maintained, 2 points if there is a slight abnormality in the formulation, If there is severe abnormality in the formulation, it was marked as 1 point.

Temperature 0 ℃ 40 ℃ 45 ℃ Example 1 4 points 5 points 4 points Example 2 4 points 4 points 3 points Example 3 5 points 5 points 4 points Comparative Example 1 4 points 3 points 1 point

From the results of Table 2, it can be seen that the temperature stability at high temperature conditions in the compositions of Examples 1 to 3 of the present invention compared to Comparative Example 1.

Experimental Example 2 Bubble Force

In this experiment, in order to measure the bubbles, the samples of the Example and Comparative Example were diluted in purified water to make a sample (10 g of aqueous cleansing + 200 g of purified water), and then the sample was placed in a 1L measuring cylinder of the bubble tester. 60 bubbles were reciprocated at 60 rpm to form bubbles, and then the initial bubble formation capacity was measured by comparing the initial bubble formation capacity.

The results are shown in Table 3 below, and looking at this, it can be seen that the case of Examples 1 to 3 is superior to the initial bubble forming ability than the case of Comparative Example 1.

Example 1 Example 2 Example 3 Comparative Example 1 Bubble volume (ml) 820 790 840 730

Experimental Example 3: Skin Stimulation

After diluting each of the samples of Examples 1 to 3 and Comparative Example 1, a predetermined amount (approximately 0.2 g) of the sample prepared on the back of each healthy adult male and female was patched, and then the pin chamber was removed. After the passage of time, the skin condition was visually read and the results are shown in Table 5. Criteria are shown in Table 4 below.

Stimulus Reaction Criteria 0 - No symptoms One +- Have only a slight erythema reaction 2 + Clear erythema, with edema but without blisters 3 ++ Clear erythema, edema, blisters 4 +++ If you have a cannon

In addition, the skin irritation index was determined according to the following formula.

[Calculation 1]

Skin irritation index = Number of test subjects / total test subjects with irritability × response

division Example 1 Example 2 Example 3 Comparative Example 1 Stimulation index 0.08 0.12 0.08 0.22

As shown in Table 5, Examples 1 to 3 all can see that the skin irritation is significantly less than in Comparative Example 1, in particular Example 1 and using the amino acid-based anionic surfactant simultaneously with the synthetic surfactant Example 3 showed a more stable skin irritation index.

Experimental Example 4: Feeling

50 women aged 20 to 30 years who mainly used cream-type aqueous cleansing were evaluated for their feeling after using the cream-type aqueous cleansing of Examples and Comparative Examples. The feeling was measured by the sensory performance and the sensory evaluation on the skin condition after use, the results are shown in Table 6 below. The sensory evaluation was performed based on the criteria of very good (5 points), excellent (4 points), moderate (3 points), bad (2 points), very bad (1 point) and the rating was calculated according to the following equation. .

[Calculation 2]

Rating = (very good) × 5 + (good) × 3 + (normal) × + (bad) × (-3) + (very bad) × (-5) / rating

division Example 1 Example 2 Example 3 Comparative Example 1 Cleaning power 3.64 3.72 3.68 3.25 Skin feeling after use (moisture) 3.88 3.72 3.96 3.16 Overall satisfaction 3.66 3.56 3.80 3.18

From the results of Table 6, the results of the Example was found to be excellent in the cleaning power when using than the case of the comparative example, and showed excellent satisfaction even in the moist feeling of the skin after use, showing excellent results in the case of Example even in overall satisfaction It was.

The cream or paste-like cleansing composition according to the present invention exhibits rich and fine foaming properties while using an excessively high melting point of fatty acids, and is satisfactory in cleaning power and moist feeling after use, and in particular, it can prevent excessive degreasing and thus protects the skin. Very excellent. In addition, the temperature stability of the composition is excellent, it is possible to stably maintain the formulation at low and high temperature conditions.

Claims (7)

a) 10.0 to 40.0% by weight of C8-C18 higher fatty acid soap; b) 0.5 to 20% by weight amino acid based anionic surfactant; c) 0.5 to 20.0 weight percent of ionic synthetic surfactant; d) 10.0 to 40.0 wt% of polyhydric alcohols; And e) remaining water Cleansing composition comprising a. The cleansing composition of claim 1, wherein the higher fatty acid soap is an alkali neutralized of at least one higher fatty acid having 8 to 18 carbon atoms. The cleansing composition of claim 1, wherein the alkali neutralizer is selected from the group consisting of potassium hydroxide and triethanolamine. The method of claim 1, wherein the amino acid-based anionic surfactant is sodium cocoyl glutamate, sodium lauroyl glutamate, sodium myristoyl glutamate, potassium lauroyl glutamate, potassium myristoyl glutamate, potassium cocoyl glycinate, and Cleansing composition that is selected from the group consisting of sodium cocoyl glycinate. The method of claim 1, wherein the ionic synthetic surfactant is acylmethyl taurate, acyl sarcosinate, sodium cocoyl isionate, sodium lauryl sulfate, sodium lauryl phosphate, sodium lauryl sulfonate, and cocamido Cleansing composition is selected from the group consisting of propylbetaine. The cleansing composition of claim 1, wherein the polyhydric alcohol is selected from the group consisting of glycerin, propylene glycol, butylene glycol, water-soluble polyethylene glycol, and sorbitol. The cleansing composition according to any one of claims 1 to 6, wherein the composition is cream or paste.