SOLID CLEANSER COMPOSITION

Abstract

The present invention relates to a solid cleanser composition including starch, sodium cocoyl isethionate, glycerin, and a conditioning agent as active ingredients. The solid cleanser composition and the method for preparing the same can prevent side effects of the skin, such as skin itching and hair loss, since not including sulfate-based surfactants, and preservatives. In addition, the solid cleanser which includes sodium cocoyl isethionate, glycerin and natural plant extracts is not easily softened and does not crumble easily to provide excellent usability, and provides excellent foaming and cleaning ability.

Claims

1. A solid cleanser composition including starch, sodium cocoyl isethionate, glycerin, and a conditioning agent as active ingredients, containing 1 to 20% by weight of starch, 40 to 80% by weight of sodium cocoyl isethionate, 1 to 20% by weight of glycerin, and 1 to 50% by weight of the conditioning agent with respect to the total weight of the solid cleanser composition, wherein based on 100 parts by weight of houttuynia cordata extract, the conditioning agent includes 100 parts by weight of houttuynia cordata extract, 120 to 180 parts by weight of green tea extract, 120 to 180 parts by weight of chrysanthemum flower extract, 120 to 180 parts by weight of licorice root extract, 70 to 130 parts by weight of calamus root extract, 70 to 130 parts by weight angelica extract, 70 to 130 parts by weight of sophora root extract, 120 to 180 parts by weight of artemisia extract, and 120 to 180 parts by weight of rosemary leaf extract.

2. The solid cleanser composition according to claim 1, wherein the starch is at least one selected from groups consisting of corn starch, tapioca starch, potato starch, wheat starch, rice starch, banana starch, and sweet potato starch.

3. The solid cleanser composition according to claim 1, wherein the cleanser composition does not include sulfate-based surfactants, and chemical preservatives.

4. A method for preparing a solid cleanser including 1 to 20% by weight of starch, 40 to 80% by weight of sodium cocoyl isethionate, 1 to 20% by weight of glycerin, and 1 to 50% by weight of the conditioning agent with respect to the total weight of the solid cleanser composition, the method comprising the operations of: S1) mixing starch, sodium cocoyl isethionate, and glycerin; S2) mixing and kneading a conditioning agent, which includes 100 parts by weight of houttuynia cordata extract, 120 to 180 parts by weight of green tea extract, 120 to 180 parts by weight of chrysanthemum flower extract, 120 to 180 parts by weight of licorice root extract, 70 to 130 parts by weight of calamus root extract, 70 to 130 parts by weight angelica extract, 70 to 130 parts by weight of sophora root extract, 120 to 180 parts by weight of artemisia extract, and 120 to 180 parts by weight of rosemary leaf extract, in the mixture obtained above; S3) molding the dough obtained in operation S2 by hand or in a mold; and S4) drying the molded product at room temperature.

5. The method according to claim 4, wherein the starch is at least one selected from groups consisting of corn starch, tapioca starch, potato starch, wheat starch, rice starch, banana starch, and sweet potato starch.

6. The method according to claim 4, wherein the cleanser does not include sulfate-based surfactants, and chemical preservatives.

7. The method according to claim 4, wherein the operation of molding the dough obtained in operation S2 by hand or in a mold is performed at 25 to 35° C.

8. A solid cleanser prepared by the method according to claim 4.

Description

DETAILED DESCRIPTION

[0052] Hereinafter, the present invention will be described in detail with reference to preparation examples, embodiments and experimental examples.

[0053] However, the following preparation examples, embodiments and experimental Examples just illustrate the present invention in detail, and the contents of the present invention are not limited by the preparation examples, embodiments and experimental examples.

Preparation Example 1: Preparation of Solid Cleanser According to Embodiments and Comparative Examples

[0054] In order to compare effects according to weight ratios between the cleanser composition of the present invention (Example 1) and the ingredients of the cleanser composition by the following Table 1 showing the composition, compositions of comparative examples 1 to 5 were prepared.

[0055] In order to prepare a solid cleanser, starch, sodium cocoyl isethionate, and glycerin were mixed, plant extracts were mixed and kneaded to the above mixture, and then, the dough obtained was molded by hand or in a mold. Thereafter, the molded object was dried at room temperature.

[0056] Based on 100 parts by weight of houttuynia cordata extract, 100 parts by weight of houttuynia cordata extract, 150 parts by weight of green tea extract, 150 parts by weight of chrysanthemum flower extract, 150 parts by weight of licorice root extract, 100 parts by weight of calamus root extract, 100 parts by weight angelica extract, 100 parts by weight of sophora root extract, 150 parts by weight of artemisia extract, and 150 parts by weight of rosemary leaf extract were used.

TABLE-US-00001 Ingredient Embodiment Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 SCI 50 39 81 50 50 50 Starch 10 11 4 0.5 10 10 Glycerin 10 10 5 10 10 10 Plant extract 30 50 10 39.5 30.sup.1) 30.sup.2)

[0057] 1) Based on 100 parts by weight of houttuynia cordata extract, 100 parts by weight of houttuynia cordata extract, 110 parts by weight of green tea extract, 110 parts by weight of chrysanthemum flower extract, 150 parts by weight of licorice root extract, 100 parts by weight of calamus root extract, 100 parts by weight angelica extract, 100 parts by weight of sophora root extract, 150 parts by weight of artemisia extract, and 150 parts by weight of rosemary leaf extract were used.

[0058] 2) Based on 100 parts by weight of houttuynia cordata extract, 100 parts by weight of houttuynia cordata extract, 150 parts by weight of green tea extract, 150 parts by weight of chrysanthemum flower extract, 150 parts by weight of licorice root extract, 60 parts by weight of calamus root extract, 100 parts by weight angelica extract, 100 parts by weight of sophora root extract, 150 parts by weight of artemisia extract, and 150 parts by weight of rosemary leaf extract were used.

1) Experimental Example 1: Softness Test

[0059] The solid cleanser (embodiment) prepared by the method of the present invention and cleansers according to the comparative examples 1 to 3 were soaked in tap water, and then, changes in weight of the cleanser as time went by were measured to measure softness.

[0060] Weights (Wi) of the cleansers of the embodiment 1 and the comparative examples 1 to 3 were measured. Thereafter, pins were respectively put on the cleansers, and the cleansers were suspended by threads, and were soaked in tap water at 25° . The cleansers were taken out two hours later, and were dried at room temperature for about 15 minutes, and then, weights (Wf) of the cleansers were measured. Through a difference between the measured weights, softness was calculated as follows. The softness is indicated in Table 2.

[00001]$\text{Softness}\text{=}\text{Wi}-\text{Wf}$

TABLE-US-00002 Division Softness Embodiment 7.5 Comparative example 1 14.5 Comparative example 2 9.5 Comparative example 3 12.3

[0061] As a result, it was confirmed that the cleanser was softened easily in a case in which sodium cocoyl isethionate was less than 40% by weight (comparative example 1) or in a case in which starch was less than 1% by weight (comparative example 3), and that the cleanser crumbled easily even by weak power in a case in which sodium cocoyl isethionate exceeded 80% by weight.

2) Experimental Example 2: Foaming Ability Test

[0062] In order to confirm foaming ability of the solid cleanser (embodiment) prepared by the method according to the present invention and the cleansers according to comparative examples 1 to 3, a foaming ability test was performed. The solid cleanser according to the embodiment of the present invention and the cleansers according to the comparative examples 1 to 3 were inserted into a basin of 15 ℓ, and then, water ran down into the basin for a predetermined period of time. Thereafter, the volumes of generated foams were measured. The volumes are indicated in Table 2.

TABLE-US-00003 Time (Sec.) Embodiment Comparative Example 1 Comparative Example 2 Comparative Example 3 15 39 20 40 25 30 75 53 75 62 45 140 70 145 90 60 210 88 220 110 75 320 150 350 210 90 480 189 490 321

[0063] As a result, it was found that the foaming performance was significantly increased in the solid cleanser of the present invention (embodiment) prepared by including sodium cocoyl isethionate at a high proportion. For example, the maximum foam volume (480 mL) according to the embodiment of the present invention was about 250% higher than that (189 mL) of the comparative example 1 measured for the same period of time (90 seconds). Such a difference became greater as time passed.

[0064] On the other hand, even if sodium cocoyl isethionate was contained at a high ratio, it was confirmed that the foaming performance was rather lowered in a case in which starch was less than 1% (comparative example 3).

3) Experimental Example 3: Alleviation of Hair Loss and Alleviation of Itching

[0065] With respect to the solid cleanser (embodiment) prepared by the method according to the present invention and the cleansers according to comparative examples 4 and 5, tests on alleviation of hair loss and alleviation of itching were performed. Ten patients with scalp itching and ten patients with hair loss used the cleansers once a day. The results are illustrated in Table 4 below.

TABLE-US-00004 Division Test items Alleviation of hair loss Alleviation of itching Embodiment Good 9 9 Normal 1 1 Bad 0 0 Comparative Example 4 Good 8 6 Normal 2 3 Bad 0 1 Comparative Example 5 Good 6 8 Normal 2 2 Bad 2 0

[0066] As illustrated in Table 4, it was found that the solid shampoo composition including natural ingredients according to the present invention showed excellent effects in alleviation of scalp itching and alleviation of hair loss. The cleanser (comparative example 4) including green tea extract and chrysanthemum flower extract of natural plant extracts at a lower ratio was somewhat lower in alleviation of itching than the solid cleanser of the present invention. Moreover, the cleanser (comparative example 5) including calamus extract at a lower ratio was somewhat lower in alleviation of hair loss than the solid cleanser of the present invention.

4) Experimental Example 4: Reduction of Scalp Heat

[0067] With respect to the solid cleanser composition (embodiment) prepared by the method according to the present invention and the cleanser compositions according to comparative examples 4 and 5, a test on scalp heat reduction was performed. In detail, the compositions were treated to five people of 20 to 40 years of age for ten minutes, and then, the five people washed their heads and dried naturally for 20 minutes. Thereafter, temperature of the scalp on the forehead part was measured. The temperature of the scalp was measured using A-ONE SMART measuring device by the BOMTEC company. The results are illustrated in Table 5 below.

TABLE-US-00005 Division Embodiment Comparative Example 4 Comparative Example 5 Temperature reduction (Average) 1.9 1.0 0.3

[0068] As a result, it was found that scalp heat of average 1.9° C. was reduced in a case in which the composition of the present invention was treated to the scalp, in comparison with the scalp heat before treatment of the composition.

5) Experimental Example 5: Test on Protein Denaturation

[0069] The solid cleanser (embodiment) prepared by the method of the present invention and a commercially purchased solid shampoo (comparative example 6) of the company L were applied to egg whites, which are known to have a protein structure similar to that of hair, to confirm whether protein denaturation occurred or not. The solid cleanser was inserted into the egg whites. After five minutes, in a case in which the color was turned blurry, it was measured as protein denaturation. The results are illustrated in Table 6 below.

TABLE-US-00006 Division Embodiment Comparative Example 6 Protein denaturation No Yes

6) Experimental Example 6: Human Body Patch Test For Evaluating Safety

[0070] A human body patch test for evaluating safety of the solid cleanser (embodiment) of the present invention was performed. With respect to 33 adults, a diluted solution of 20 .Math.L which was ten times diluted than the solid cleanser (embodiment) of the present invention was loaded on a patch, and a patch test was performed in a closed state for 24 hours. Skin reactions after 30 minutes, 24 hours, and 48 hours from removal of the patch were observed. A visual evaluation of the test region was performed according to the criteria of International Contact Dermatitis Research Group (ICDRG). Two or more test subjects received the test, and a higher rank was selected in a case in which judgement results of the two test subjects were different from each other. After the visual evaluation, an average skin reactivity at each test region was calculated by using the following equation, and as illustrated in Table 7, results of the human body patch test were judged based on the skin reactivity.

[00002]$\begin{array}{l}\text{Average}\text{skin}\text{reactivity}\text{=}\\ \frac{\text{Sum}\text{of}\text{judgement}\text{scores}}{\text{Highest}\text{judgement}\text{score}\times \text{Number}\text{of}\text{evaluations}\text{after}\text{removing}\text{patch}\times \text{Number}\text{of}\text{test}\text{subjects}}\times 5\end{array}$

TABLE-US-00007 Skin reactivity Judgement result 0.00 ~ 0.75 Non-irritation 0.76 ~ 1.50 Very weak irritation 1.51 ~ 2.50 Slight irritation 2.51 ~ 4.00 Intermediate irritation 4.01 ~ 5.00 Strong irritation

[0071] As a result, since the skin reactivity to the solid cleanser of the present invention was 0.00, it was judged as non-irritation according to the criteria to judge the range from 0.00 to 0.75 as non-irritation.

ADVANTAGEOUS EFFECTS

[0072] The solid cleanser composition and the method for preparing the solid cleanser composition according to the present invention can prevent side effects of the skin, such as skin itching and hair loss, since not including sulfate-based surfactants, and preservatives. In addition, the solid cleanser which includes sodium cocoyl isethionate, glycerin and natural plant extracts is not easily softened and does not crumble easily to provide excellent usability, and provides excellent foaming and cleaning ability.