KR102383715B1 - Cosmetic composition having weak-acidity and low-viscosity with excellent suppressing sebum and stability - Google Patents

Abstract

The present invention relates to a weakly acidic and low-viscosity cosmetic composition which comprises: a thickener including a fermented extract of Sphingomonas; and an organic acid. The weakly acidic and low-viscosity cosmetic composition provided in the present invention has the effect of controlling sebum and dead skin while maintaining the pH balance of the skin and has the desired viscosity even at a low content of the thickener by using a fermented extract of Sphingomonas, a natural material, as the thickener, thereby having an excellent feeling of use and having effects of stability and moisturizing.

Description

Weakly acidic low-viscosity cosmetic composition with excellent sebum suppression and stability {COSMETIC COMPOSITION HAVING WEAK-ACIDITY AND LOW-VISCOSITY WITH EXCELLENT SUPPRESSING SEBUM AND STABILITY}

The present invention relates to a weakly acidic low-viscosity cosmetic composition, and more particularly, to a weakly acidic low-viscosity cosmetic composition having excellent sebum and keratin care while maintaining the pH balance of the skin.

The skin, which is the largest organ of the human body, has various physiological functions such as a function to protect various organs inside the skin from the outside, a barrier function to prevent the leakage of moisture and useful components from the inside, a temperature control function, an excretion function, and a breathing function It is a very important institution in charge of However, as the skin gets thinner, the skin barrier function deteriorates, and the skin's physiological function deteriorates, such as dry skin due to a rapid decrease in the moisture content of the skin. In addition, the highly reactive active oxygen and free radicals generated by the increase in the amount of ultraviolet rays, air pollution, and excessive fatigue and stress of modern people oxidize or denature biocomponents such as proteins, nucleic acids, and cell membrane lipids, thereby lowering the physiological function of the skin. It causes skin irritation to occur easily even by small external irritants. In addition, skin irritation phenomena such as wrinkles, blemishes, freckles, and pigmentation occur according to the aging of the skin.

In addition, the production of sebum in the skin plays a role in maintaining moisture in the skin and preventing the invasion of microorganisms, but excessive secretion of sebum causes skin shine or makeup, enlarged pores and aging, and promotes the formation of acne after puberty. also do Various substances have been developed to treat these skin diseases, but since they are substances developed for the purpose of treating symptoms or diseases such as acne itself rather than removing the root cause, the healing effect is insignificant and the preventive concept is not There is no situation, and there are problems in that side effects such as skin redness, skin hypersensitivity reaction, and photosensitivity reaction caused by synthetic drugs and recurrence occur frequently.

In this regard, research and development of cosmetics for skin moisturizing effect, cell regeneration effect, whitening effect, wrinkle improvement effect, and skin elasticity effect are being conducted using compositions such as AHA, BHA, and PHA, and skin irritation due to acidity is Various attempts are being made to minimize it and increase the effect.

Accordingly, the present inventor helps to suppress sebum while minimizing irritation to the skin through a cosmetic composition with a weak acidity similar to the pH of the skin, and uses a natural substance, Sphingomonas ferment extract as a thickener, even if the thickener is included in a low content The present invention has been achieved by developing a cosmetic composition that achieves the desired viscosity while having excellent stability by achieving the desired viscosity.

Korean Patent Publication No. 10-2026656

The present invention relates to a weakly acidic low-viscosity cosmetic composition comprising an organic acid and a thickener comprising a Sphingomonas fermented extract, and specifically, a weakly acidic low-viscosity cosmetic composition with excellent sebum and keratin care while maintaining the pH balance of the skin would like to provide

However, the technical problem to be achieved by the present invention is not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those of ordinary skill in the art from the following description.

According to one embodiment of the present invention, there is provided a weakly acidic low-viscosity cosmetic composition comprising a thickener and an organic acid comprising a Sphingomonas fermentation extract.

In the present invention, the Sphingomonas fermentation extract may be a weakly acidic low-viscosity cosmetic composition comprising 0.01 wt% to 0.5 wt% based on the total weight of the weakly acidic low-viscosity cosmetic composition.

In the present invention, the organic acid may be a weakly acidic low-viscosity cosmetic composition comprising at least one selected from the group consisting of AHA (α-hydroxy acid), BHA (β-hydroxy acid) and PHA (polyhydroxy acid).

In the present invention, the organic acid may be a weakly acidic low-viscosity cosmetic composition included in an amount of 0.01 wt% to 2 wt%, based on the total weight of the weakly acidic low-viscosity cosmetic composition.

In the present invention, the AHA is selected from the group consisting of citric acid, lactic acid, glycolic acid, malic acid, and tartaric acid. It may be a weakly acidic low-viscosity cosmetic composition comprising at least one.

In the present invention, the BHA may be a weakly acidic low-viscosity cosmetic composition comprising at least one selected from the group consisting of salicylic acid and betaine salicylate.

In the present invention, the PHA may be a weakly acidic low-viscosity cosmetic composition that is gluconic lactone.

In the present invention, the weakly acidic low-viscosity cosmetic composition may be a weakly acidic low-viscosity cosmetic composition further comprising a chelating agent in an amount of 0.01 wt% to 0.1 wt%, based on the total weight of the weakly acidic low-viscosity cosmetic composition.

In the present invention, the chelating agent may be a weakly acidic low-viscosity cosmetic composition comprising disodium EDTA.

In the present invention, the low-viscosity cosmetic composition may be a weakly acidic low-viscosity cosmetic composition, characterized in that it is slightly acidic with a pH of 3 to 5.

The weakly acidic, low-viscosity cosmetic composition provided by the present invention minimizes irritation to the skin through a weakly acidic cosmetic composition similar to the pH of the skin, and has excellent sebum suppression and keratin care functions, as well as a natural substance, Sphingomonas fermented extract. Even if it is used as a thickener and contains a low content of the thickener, it achieves the desired viscosity, thereby providing excellent stability and moisturizing effect.

Hereinafter, in order to explain in more detail, examples will be described in detail. However, the following examples are illustrative, and the scope of the present invention is not limited thereto.

According to one embodiment of the present invention, Sphingomonas relates to a weakly acidic low-viscosity cosmetic composition comprising an organic acid and a thickener comprising a fermentation extract.

The Sphingomonas are gram-negative bacteria of the family Sphingomonadaceae, and are a genus of anoxic rod-shaped bacteria. Specifically, defined as a group of aerobic bacteria, microorganisms that contain glycosphingolipids (GSLs), particularly ceramide, instead of lipopolysaccharide (LPS) in their cellular respiratory tract, and typically produce yellow and yellow colored colonies. am. By 2001, this phylum contained more than 20 species diverse in phylogenetic, ecological and physiological characteristics, and as a result, Sphingomonas were found to be Sphingomonas, Sphingobium, and nophosphogobium. (Novosphingobium), Sphingosinicella and Sphingopyxis were subdivided into, but this genus is commonly called Sphingomonas. Sphingomonas are widely distributed in nature, isolated from the root system of plants, from clinical specimens and from other sources, as well as from various terrestrial and swampy lands. The reason they can exist in such a diverse environment is because of their ability to not only metabolize various concentrations of carbon sources, but also survive in low concentrations of nutrients. In addition, many strains are isolated from an environment contaminated with toxic compounds and have the ability to use pollutants as nutrients, demonstrating the industrial applicability and activity of harmful substances. That is, due to their biodegradability and biosynthetic ability, Sphingomonas have been used in a wide range of industrial biotechnology applications, from the biological purification of environmental pollutants to the widespread use in food and other fields and the production of polymers, In the cosmetic field, Sphingomonas strain is known as a strain that produces Glycosphingolipid, a substance similar to ceramide, and is mainly used for useful functions such as skin barrier improvement.

In the present invention, the Sphingomonas fermentation extract is preferably cultured in a pre-prepared sterile incubator using a medium suitable for strain fermentation. The medium complies with aeration, agitation, pH, and temperature conditions suitable for the fermentation environment. After fermentation is complete, the culture result is harvested after the death of the strain, and the culture medium is harvested with ethanol, then blown off the ethanol and dried to recover the final powder, but if the Sphingomonas fermentation extraction method commonly used in the art It is not limited thereto.

As used herein, the term "extract" refers to an extract obtained by extraction treatment, a diluted or concentrated liquid of the extract, a dried product obtained by drying the extract, a prepared or purified product of the extract, or a mixture thereof, such as the extract itself and the extract Includes extracts of all formulations that can be formed using

The 'extract' is a concept that includes all of the general extracts and is used as a concept that includes a hot water extract and an ethanol extract. The 'extract' refers to an extraction using a polar solvent selected from lower alcohols having 1 to 4 carbon atoms or a mixed solvent thereof, preferably ethanol.

The Sphingomonas fermentation extract of the present invention may be included in 0.01 wt% to 0.5 wt%, 0.05 to 0.4 wt%, 0.1 to 0.4 wt%, based on the total weight of the weakly acidic low-viscosity cosmetic composition, and maintain the desired viscosity It may be a weakly acidic low-viscosity cosmetic composition that is most suitably included in an amount of 0.3% by weight, but is not limited thereto.

In the present invention, when the Sphingomonas ferment extract is included in an amount of less than 0.01% by weight based on the total weight of the weakly acidic low-viscosity cosmetic composition, it cannot function as a thickener, so that the formulation of the cosmetic composition is impossible, and it exceeds 0.5% by weight When it is included, there is a problem in that the viscosity is too high to form a viscosity of 200 to 5,000cps desired in the present invention.

The organic acid of the present invention may be a weakly acidic low-viscosity cosmetic composition comprising at least one selected from the group consisting of α-hydroxy acid (AHA), β-hydroxy acid (BHA) and polyhydroxy acid (PHA), but is limited thereto. doesn't happen

The organic acid of the present invention may be included in 0.01% to 2% by weight, 0.1 to 2% by weight, 0.2 to 1.5% by weight, based on the total weight of the weakly acidic low-viscosity cosmetic composition, and the desired pH value in the present invention In terms of maintenance, it may be a weakly acidic low-viscosity cosmetic composition that is most suitably included in an amount of 0.3 to 1% by weight, but is not limited thereto.

In the present invention, when the organic acid is included in an amount of less than 0.01% by weight based on the total weight of the weakly acidic low-viscosity cosmetic composition, the pH value of the cosmetic composition rises, and the pH balance of the skin cannot be maintained, and the function of sebum and keratin care cannot be performed, When included in excess of 2% by weight, there is a problem in that the pH value of the cosmetic composition is lowered, thereby giving strong irritation to the skin.

The AHA of the present invention is selected from the group consisting of citric acid, lactic acid, glycolic acid, malic acid, and tartaric acid. It may be a weakly acidic low-viscosity cosmetic composition comprising at least one, but is not limited thereto. In the present invention, the AHA may be included in an amount of 0.01 to 0.5% by weight, 0.1 to 0.4% by weight, or 0.2 to 0.3% by weight based on the total weight of the weakly acidic low-viscosity cosmetic composition, in terms of maintaining the desired pH and viscosity ranges Most suitably, 0.3% by weight may be used, but is not limited thereto.

The BHA of the present invention may be a weakly acidic low-viscosity cosmetic composition comprising at least one selected from the group consisting of salicylic acid and betaine salicylate, but is not limited thereto.

In the present invention, the BHA may be included in an amount of 0.01 to 0.5% by weight, 0.2 to 0.5% by weight, or 0.4 to 0.5% by weight based on the total weight of the weakly acidic low-viscosity cosmetic composition, and in terms of maintaining the desired pH and viscosity ranges Most suitably, 0.5% by weight may be used, but is not limited thereto.

The PHA of the present invention may be a weakly acidic low-viscosity cosmetic composition containing gluconic lactone, wherein the PHA is 0.01 to 2% by weight, 0.05 to 2% by weight based on the total weight of the weakly acidic low-viscosity cosmetic composition It may be included, and may be used in an economically efficient aspect while maintaining the desired pH and viscosity ranges, but may be most suitably used in 1 wt%, but is not limited thereto.

The weakly acidic low-viscosity cosmetic composition of the present invention may further include a chelating agent in an amount of 0.01 to 0.1% by weight, 0.01 to 0.08% by weight, 0.02 to 0.05% by weight, based on the total weight of the weakly acidic low-viscosity cosmetic composition, It may be a weakly acidic low-viscosity cosmetic composition containing 0.03% by weight most suitably in terms of maintaining the desired pH range, but is not limited thereto.

In the present invention, when the chelating agent is included in an amount of less than 0.01% by weight based on the total weight of the weakly acidic low-viscosity cosmetic composition, discoloration or discoloration occurs in the formulation of the cosmetic composition, and when it contains more than 0.1% by weight of the cosmetic composition There is a problem that the pH value is significantly increased, which is out of the range of weak acidity desired in the present invention.

The chelating agent of the present invention may be a weakly acidic low-viscosity cosmetic composition containing disodium EDTA.

In the present invention, the weakly acidic low-viscosity cosmetic composition may further include a humectant that enhances the effect of moisturizing and moisture with a stable viscosity even in weak acidity, and the humectant is glycerin, dipropylene glycol, methylpropanediol, propanediol, butyl It may be a weakly acidic low-viscosity cosmetic composition comprising at least one selected from the group consisting of renglycol and propylene glycol, and most suitably dipropylene glycol Calls may be used, but are not limited thereto.

In the present invention, the moisturizing agent may be included in an amount of 0.01 to 50% by weight, 1 to 40% by weight, or 5 to 20% by weight based on the total weight of the weakly acidic low-viscosity cosmetic composition, and to enhance the effect of a desired moisturizing and moisture feeling even in weak acidity It may be most suitably used in 10% by weight in terms of, but is not limited thereto.

In the present invention, the weakly acidic low-viscosity cosmetic composition may further include a neutralizing agent that enhances the feeling of use through a stable viscosity even in weak acidity.

In the present invention, the neutralizing agent may be a weakly acidic low-viscosity cosmetic composition comprising at least one selected from the group consisting of tromethamine and sodium citrate, 0.01 to 1% by weight based on the total weight of the weakly acidic low-viscosity cosmetic composition, It may be included in an amount of 0.01 to 0.5% by weight, and may be most preferably used in an amount of 0.3 to 0.5% by weight in terms of improving stability and feeling of use while maintaining the desired pH and viscosity ranges, but is not limited thereto.

The weakly acidic low-viscosity cosmetic composition of the present invention may have a viscosity of 200 to 5,000 cps, 250 to 4,750 cps, and 1,000 to 4,000 cps, and is most preferably 2,000 to 3,000 cps in terms of maintaining moisture and improving the feeling of use. It may be a weakly acidic low-viscosity cosmetic composition, but is not limited thereto.

The weakly acidic, low-viscosity cosmetic composition of the present invention may be slightly acidic at pH 3 to 5, pH 3.1 to 4.8, and pH 3.3 to 4.7, and is the most excellent in terms of maintaining the pH balance of the skin and excellent sebum and keratin care functions. Suitably, it may be a weakly acidic low-viscosity cosmetic composition having a pH of 3.8 to 4.5, but is not limited thereto.

The weakly acidic low-viscosity cosmetic composition may be for maintaining the pH balance of the skin, suppressing sebum, exfoliating the skin, whitening and moisturizing the skin.

As used herein, the term “cosmetic composition” refers to an article used in the human body to clean and beautify the human body to add attractiveness, to brighten the appearance, or to maintain or promote health of skin and hair.

The skin includes all skin parts of the body including the face, hands, arms, legs, feet, chest, belly, back, buttocks, and scalp.

The weakly acidic low-viscosity cosmetic composition contains any one or more selected from the group consisting of a solubilizer, a thickener, a preservative, a stabilizer, a solubilizer, a surfactant, a carrier, and an incense burner, within which the object of the present invention is not impaired. It may also be a cosmetic composition, and other ingredients and functional ingredients that are formulated in conventional cosmetics may be additionally blended.

The type of the cosmetic composition is not particularly limited, but suitably skin lotion, skin softener, skin toner, astringent, lotion, milk lotion, moisture lotion, nourishing lotion, massage cream, nourishing cream, moisture cream, hand cream, foundation, It can be selected from the group consisting of essence, nutritional essence, pack, mask pack, soap, cleansing foam, cleansing lotion, cleansing cream, body lotion and body cleanser, and is composed of a pharmaceutical composition for external application for skin, quasi-drugs, antibacterial or moisture supply. It may be any one selected from the group.

The external preparation for skin may be a cream, gel, ointment, skin emulsifier, skin suspension, transdermal patch, drug-containing bandage, lotion, or a combination thereof. The external preparation for skin is a component used in external preparations for skin such as cosmetics or pharmaceuticals, for example, an aqueous component, an oily component, a powder component, alcohol, a moisturizer, a thickener, an ultraviolet absorber, a whitening agent, a preservative, an antioxidant, a surfactant, a fragrance , colorant, various skin nutrients, or a combination thereof may be appropriately formulated as needed. The external preparation for skin includes metal-blocking agents such as disodium edetate, trisodium edetate, sodium citrate, sodium polyphosphate, sodium metaphosphate, and gluconic acid, caffeine, tannin, belapamil, licorice extract, glablidine, and kaline. Fruit hot water extracts, various herbal medicines, tocopherol acetate, glitylittic acid, tranexamic acid and derivatives or salts thereof, vitamin C, magnesium ascorbate phosphate, ascorbic acid glucoside, arbutin, kojic acid, glucose, fructose, Sugars, such as trehalose, etc. can be mix|blended suitably.

Hereinafter, the present invention will be described in detail with reference to the following examples. However, the following examples are only illustrative of the present invention, and the content of the present invention is not limited by the following examples.

Example

Experimental Example 1: Efficacy evaluation according to the mixing ratio

ingredient Example 1 Example 2 Example 3 Example 4 Example 5 Sphingomonas Fermented Extract 0.3 0.05 0.5 0.3 0.3 organic acid Glycolic Acid 0.3 0.3 0.3 - - Salicylic Acid - - - 0.5 - gluconolactone - - - - One Disodium EDTA 0.03 0.03 0.03 0.03 0.03 tromethamine 0.2 0.2 0.2 0.4 0.4 sodium citrate 0.1 0.1 0.1 0.1 0.1 dipropylene glycol 10 10 10 10 10

As shown in Table 1, a weakly acidic low-viscosity cosmetic composition was prepared with the mixing ratio of Examples 1 to 5 and the remainder purified water, and pH, viscosity, stability and sensory evaluation of the formulation were performed, and are shown in Table 2 below.

Specifically, the weakly acidic low-viscosity cosmetic composition prepared in the composition of Table 1 was filled in a 100 g vial or stick container, and an experiment was performed to check whether pH and viscosity were formed. The pH was measured using a pH meter, and the viscosity 　 was aged for about a day, and then the spindle No. 3 and a spin speed of 12 rpm.

In addition, the stability evaluation of the formulation was made by visual observation, and the sensory evaluation was applied to the skin of 20 men and women (age distribution 19-35 years old), and the presence or absence of irritation was investigated after about 15 minutes.

division Example 1 Example 2 Example 3 Example 4 Example 5 pH 4.4 4.46 4.44 3.9 3.84 Viscosity (cps) 2,800 250 4,740 2,500 2,500 Formulation stability stable stable stable stable stable sensory evaluation no irritation no irritation no irritation no irritation no irritation

As shown in Table 2, it was confirmed that all of Examples 1 to 5 did not irritate the skin with weak acidity of pH 3 to 5, viscosity of 200 to 5,000 cps, and stable formulation.

Specifically, Examples 1 to 3 are cases in which the content of the Sphingomonas fermented extract is formulated differently, and it can be confirmed that the viscosity of the cosmetic composition increases as the content ratio of the Sphingomonas fermented extract increases, suitably in Example 1 In the case of a mixing ratio of , it was found that the stability of the formulation was the best with a pH of 4.4 and a viscosity of 2,800 cps.

Examples 4 to 5 are cases in which the types of organic acids according to the present invention are mixed differently, and regardless of the type of organic acids, the content ratio of the Sphingomonas fermentation extract and the organic acid is the mixing ratio of the present invention, the desired pH and viscosity are maintained knew what to do

Therefore, when the Sphingomonas ferment extract and organic acid are included in the blending ratio of Examples 1 to 5 according to the present invention, it exhibits weak acidity of pH 3 to 5, which is a pH similar to that of the skin, so as to maintain the pH balance of the skin and sebum without irritation to the skin It is possible to take care of keratin and keratin, and while using fermented extract of Sphingomonas, a natural substance, as a thickener, it maintains the desired viscosity and moisture even with a small amount without side effects, so it can be usefully used as a weakly acidic low-viscosity cosmetic composition. was able to confirm

Experimental Example 2: Efficacy evaluation according to the thickener

1-1. Efficacy evaluation according to the type of thickener

thickener Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Sphingomonas Fermented Extract 0.3 - - - - xanthan gum - 0.3 - - - Hydroxyethyl Cellulose - - 0.3 - - Cellulose Gum 0.3 - Carbomer 0.3

As shown in Table 3, the cosmetic composition was prepared by mixing at the mixing ratio of Comparative Examples 1 to 4, and the content ratio of the thickener excluding the kind of thickener and the organic acid, chelating agent, moisturizing agent and neutralizing agent were the mixing ratio of Example 1. was prepared in the same way as

In addition, pH, viscosity, stability and sensory evaluation of the formulation were performed in the same manner as in Experimental Example 1, and are shown in Table 4 below.

division Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 pH 4.4 4.88 4.69 4.69 3.96 Viscosity (cps) 2,800 150 26 9 3 Formulation stability stable precipitation precipitation precipitation loss of viscosity sensory evaluation no irritation no irritation no irritation no irritation no irritation

As shown in Table 4, Comparative Examples 1 to 4 using a thickener other than the Sphingomonas fermentation extract maintained weak acidity of pH 3 to 5, but it was confirmed that the viscosity was remarkably low at 200 cps or less.

Specifically, in Comparative Example 1 including xantam gum, Comparative Example 2 including hydroxyethyl cellulose, and Comparative Example 3 including cellulose gum, the pH value was similar to 4 or more compared to Examples 1 to 5, but the viscosity was significantly It was confirmed that the precipitation phenomenon occurred.

In addition, in the case of Comparative Example 4 including carbomer, the viscosity was remarkably low, making it impossible to use immersion in a mask, etc., the formulation was not formed and collapsed, and there was an evaluation result that the moisturizing power was insufficient.

Therefore, as can be seen in Tables 3 to 4, when a thickener other than the thickener according to the present invention is used in the same amount, the viscosity is remarkably low and precipitation occurs, or it is impossible to form as a formulation of a cosmetic composition could see that

1-2. Efficacy evaluation according to the content of different kinds of thickeners

thickener Example 1 Comparative Example 5 Comparative Example 6 Comparative Example 7 Comparative Example 8 Sphingomonas Fermented Extract 0.3 - - - - xanthan gum - One - - - Hydroxyethyl Cellulose - - One - - Cellulose Gum - - - 1.2 - Carbomer - - - - 0.8

As shown in Table 5, the cosmetic composition was prepared by mixing at the mixing ratio of Comparative Examples 5 to 8, and the organic acid, chelating agent, moisturizing agent, and neutralizing agent were prepared in the same manner as in Example 1 except for the type and content of the thickener. did

In addition, pH, viscosity, formulation stability and sensory evaluation were performed in the same manner as in Experimental Example 1, and are shown in Table 6 below.

division Example 1 Comparative Example 5 Comparative Example 6 Comparative Example 7 Comparative Example 8 pH 4.4 4.54 4.54 4.6 3.56 Viscosity (cps) 2,800 2,820 3,450 3,000 1,860 Formulation stability stable stable precipitation precipitation loss of viscosity sensory evaluation no irritation no irritation no irritation no irritation no irritation

As shown in Table 6, Comparative Examples 5 to 8 including a high content of other thickeners for the same viscosity (200 to 5,000 cps) as in the present invention maintain weak acidity of pH 3 to 5, but in Comparative Examples 6 to 8 In this case, it was confirmed that precipitation or collapse of the formulation occurred.

Specifically, Comparative Example 5 is a case where 1% by weight of xantam gum is mixed, and it can be confirmed that the pH and viscosity are similar to those of Example 1, and the stability and irritation sensory evaluation of the formulation are also similar, but it is sticky compared to Example 1. There was this very serious problem, and it can be seen that the desired pH and viscosity appear when at least three times the content ratio of the thickener of Example 1 is mixed.

Comparative Example 6 was a case of mixing 1% by weight of hydroxyethyl cellulose, and compared to Example 1, the pH and viscosity were similar, but it was confirmed that the precipitation phenomenon occurred, and the thickener content ratio of Example 1 was It can be seen that three times or more were mixed.

Comparative Example 7 is a case where 1.2% by weight of cellulose gum is mixed, and compared to Example 1, the pH and viscosity are similar, but it was confirmed that the precipitation phenomenon occurred, and 4 times the thickener content ratio of Example 1 was mixed. it can be seen that

Comparative Example 8 is a case in which 0.8% by weight of carbomer is mixed. Compared to Example 1, the pH and viscosity are similar, but it was confirmed that the viscosity of the formulation collapsed, and it was 2.5 times the thickener content ratio of Example 1. It turns out that the above was mixed.

Therefore, as can be seen in Tables 3 to 4, in order to exhibit a level of viscosity similar to that of 2,800 cps that appears when 0.3 wt% of the Sphingomonas ferment extract according to Example 1 is mixed, a different kind of thickener is used in Examples It was confirmed that 2.5 to 4 times or more should be mixed as compared with 1. In addition, when using a high content of thickeners such as carbomer and xanthan gum, there was a problem that stickiness was felt. .

Accordingly, it was confirmed that, when the thickener according to the content ratio of the present invention is used, there is a critical significance in that it is possible to prepare a stable cosmetic composition having a desired viscosity even with a small content.

Experimental Example 3: Efficacy evaluation according to organic acids

organic acid Example 1 Comparative Example 9 Comparative Example 10 Comparative Example 11 Comparative Example 12 Comparative Example 13 Glycolic Acid 0.3 3 - - - Salicylic Acid - - 5 - - - gluconolactone - - - 10 - - hyaluronic acid - - - - 0.3 - Ascorbic Acid - - - - - 0.3

As shown in Table 7, the cosmetic composition was prepared by mixing at the mixing ratio of Comparative Examples 9 to 13, and the thickening agent, chelating agent, moisturizing agent and neutralizing agent were prepared in the same way as in Example 1 except for the type or content of organic acid. did

In addition, pH, viscosity, formulation stability and sensory evaluation were performed in the same manner as in Experimental Example 1, and are shown in Table 8 below.

division Example 1 Comparative Example 9 Comparative Example 10 Comparative Example 11 Comparative Example 12 Comparative Example 13 pH 4.4 2.58 2.63 2.42 7.75 6.37 Viscosity (cps) 2,800 2,670 2,960 2,500 3,540 2,570 Formulation stability stable discoloration, odor precipitation loss of viscosity entanglement discoloration, odor sensory evaluation no irritation with irritation with irritation with irritation no irritation with irritation

As shown in Table 8, Comparative Examples 9 to 11 outside the organic acid content range of the present invention have similar viscosity ranges as compared to Example 1, but are acidic outside the desired pH value range, and irritate the skin There were evaluations of this feeling. In addition, when an organic acid other than the organic acid of the present invention is included, the pH value is slightly alkaline outside the weak acidity range, and the viscosity rises or is difficult to solubilize, making it difficult to formulate as a low-viscosity cosmetic composition.

Specifically, Comparative Example 9 contained 3% by weight of glycolic acid, and discoloration and discoloration occurred.

Comparative Example 10 contained 5% by weight of salicylic acid, and precipitation and separation occurred, and it was evaluated that it was acidic outside the range of the desired pH value, and irritation to the skin was felt.

In Comparative Example 11, 10% by weight of gluconolactone was included, and there was an evaluation that the viscosity was broken, the pH was acidic out of the range of the desired pH value, and irritation to the skin was felt. Comparative Example 12 contains 0.3% by weight of hyaluronic acid, which is a different type of organic acid from the present invention, and as compared to Example 1, the viscosity is slightly increased, and the pH value is remarkably increased, and the formulation is alkaline. There was a phenomenon in which the inside of the

Comparative Example 13 is a case containing 0.3% by weight of ascorbic acid, which is a different type of organic acid from the present invention, and has a similar viscosity as in Example 1, but the pH value is out of the range of weak acidity and shows weak alkalinity and discoloration and odor phenomenon occurred, and as a result of sensory evaluation, it was evaluated that irritation was felt on the skin.

Accordingly, when the organic acid is applied according to the mixing ratio of the present invention, it has a critical meaning that it is possible to care for sebum and dead skin cells without irritation to the skin while maintaining the pH balance of the skin with a weak acidity of pH 3 to 5, which is a pH value similar to that of the skin. could

Experimental Example 4: Efficacy evaluation according to the chelating agent

chelating agent Example 1 Comparative Example 14 Comparative Example 15 Comparative Example 16 Comparative Example 17 Disodium EDTA 0.03 0.005 0.3 - - Sodium Phytate - - 0.03 - Trisodium Ethylenediamine Disuccinate - - - 0.03

As shown in Table 9, the cosmetic composition was prepared by mixing at the mixing ratio of Comparative Examples 14 to 17, and the organic acid, thickener, moisturizer and neutralizer except for the type or content of the chelating agent were prepared in the same way as in Example 1 did

In addition, pH, viscosity, formulation stability and sensory evaluation were performed in the same manner as in Experimental Example 1, and are shown in Table 10 below.

division Example 1 Comparative Example 14 Comparative Example 15 Comparative Example 16 Comparative Example 17 pH 4.4 5.2 7.43 5.2 5.6 Viscosity (cps) 2,800 2,485 2,500 2,500 2,400 Formulation stability stable discoloration, odor stable stable stable sensory evaluation no irritation no irritation no irritation no irritation no irritation

As shown in Table 10, in the case of Comparative Examples 14 and 15 outside the chelate content range of the present invention, the viscosity range was similar to that of Example 1, but it was confirmed that the pH value range was out of the range, and different from the present invention In Comparative Examples 16 and 17 containing a kind of chelate, it was confirmed that the pH value was somewhat higher than in Example 1.

Specifically, Comparative Example 14 contains 0.005% by weight of disodium EDTA, and although the pH and viscosity maintain the desired ranges of the present invention, discoloration and discoloration occurred.

Comparative Example 15 was a case containing 0.3% by weight of disodium EDTA, and compared to Example 1, the viscosity range was similar, but the pH value was remarkably increased and it was confirmed that the alkalinity was observed.

Comparative Example 16 contained 0.03% by weight of sodium phytate as a chelating agent different from that of the present invention, and it was confirmed that it showed neutrality outside the weakly acidic range of the present invention.

Comparative Example 17 was a case in which 0.03% by weight of trisodium ethylenediamine disuccinate was included as a chelating agent different from that of the present invention, and it was confirmed that it was neutral outside the weakly acidic range of the present invention.

Accordingly, it was confirmed that, when the chelating agent according to the content ratio of the present invention is used, there is a critical significance in being able to prepare a stable cosmetic composition having a desired pH and viscosity.

As the specific parts of the present invention have been described in detail above, for those of ordinary skill in the art, these specific techniques are only preferred embodiments, and it is clear that the scope of the present invention is not limited thereto. Accordingly, the substantial scope of the present invention will be defined by the appended claims and their equivalents.

Claims (11)

Sphingomonas ( Sphingomonas ) It contains 0.01% to 0.5% by weight of a thickener containing a fermentation extract and an organic acid, wherein the organic acid is AHA (α-hydroxy acid), BHA (β-hydroxy acid) and PHA (polyhydroxy acid) A weakly acidic low-viscosity cosmetic composition comprising at least one selected from the group consisting of. delete delete According to claim 1,
The organic acid is a weakly acidic low-viscosity cosmetic composition comprising 0.01 wt% to 2 wt%, based on the total weight of the weakly acidic low-viscosity cosmetic composition. According to claim 1,
The AHA is at least one selected from the group consisting of citric acid, lactic acid, glycolic acid, malic acid, and tartaric acid. A weakly acidic low-viscosity cosmetic composition comprising a. According to claim 1,
The BHA is a weakly acidic low-viscosity cosmetic composition comprising at least one selected from the group consisting of salicylic acid and betaine salicylate. According to claim 1,
The PHA is a weakly acidic low-viscosity cosmetic composition of gluconic lactone. According to claim 1,
The weakly acidic low-viscosity cosmetic composition further comprises a chelating agent in an amount of 0.01 wt% to 0.1 wt%, based on the total weight of the weakly acidic low-viscosity cosmetic composition. 9. The method of claim 8,
The chelating agent is a weakly acidic low-viscosity cosmetic composition comprising disodium EDTA. According to claim 1,
The weakly acidic low-viscosity cosmetic composition is a weakly acidic low-viscosity cosmetic composition, characterized in that it has a viscosity of 200 to 5,000cps. According to claim 1,
The weakly acidic low-viscosity cosmetic composition is a weakly acidic low-viscosity cosmetic composition, characterized in that it is slightly acidic with a pH of 3 to 5.