WO2018038472A1 - Cosmetic composition, and method for supplying useful substances to skin - Google Patents

Abstract

The present invention relates to: a cosmetic composition for supplying, to the skin, useful substances, such as an electrolyte and moisturizing factors, lost from cleansing, the cosmetic composition comprising 50-75 wt% of an electrolyte, 15-30 wt% of an organic acid and 5-15 wt% of a saccharide and to be applied to moist skin; and a method for supplying useful substances to the skin.

Description

How to supply useful ingredients to cosmetic composition and skin

The present invention relates to a cosmetic composition for supplying the skin with the useful ingredient lost by washing and a method of supplying the useful ingredient to the skin.

Skin is an organ that covers the outside of the body and is divided into three layers: epidermis, dermis and subcutaneous fat. These skins act as a barrier to protect the body against humidity and temperature changes, ultraviolet radiation, and other physical or chemical external stimuli. In particular, the epidermis has the function of preventing water evaporation. In order to maintain a constant moisture of the skin, the skin is formed of a sebaceous film consisting of sebum secreted by sebaceous glands and moisture from the sweat glands. These sebaceous membranes play an important role in preventing evaporation of water in the body or in the skin. However, when the sebaceous film is excessively formed or when the chemicals such as dust or color cosmetics cover the surface of the skin for a long time, the oil / water balance of the skin may be broken, and the skin may be colored or inflammation such as acne may be caused. Therefore, there is a need to cleanly remove contaminants such as sebum, sweat, dust, chemicals, and the like.

In general, in order to completely remove the contaminants accumulated on the skin, a cleaning agent having an excellent cleaning effect is used. The cleaning agent is mainly composed of a surfactant, an emulsifier, a perfume, and the like. The surfactant contains a hydrophilic functional group having affinity with water and a lipophilic functional group having an affinity with the oil component in one molecule so as to adsorb on the interface to mix the oil component and the aqueous component well, and to remove contaminants accumulated in the skin. Allow to wash off. However, when a detergent containing a surfactant is used, too much of the useful components of the skin and natural moisturizing factor (NMF) are removed too much, which lowers the acidity (pH) and osmotic pressure of the skin, and not only makes the skin dry but also causes a small irritation. Sensitization can cause itching, itching, and inflammation. In order to recover such damaged skin, the skin, essences, lotions and other basic cosmetics can be supplied to the skin with lost oil. As an example of such basic cosmetics, Korean Patent Publication No. 2010-0015042 discloses a cosmetic composition containing seaweed fibers as an active ingredient for moisturizing the skin. However, the basic cosmetics can supply some of the oil to the skin, but the osmolarity of the skin is inevitably kept low due to insufficient supply of the electrolyte. In addition, if this condition persists, the homeostasis of the skin is broken down, which makes the skin more sensitive and loses the ability to defend against foreign substances. Therefore, a lot of research and development is still required in order to supply sufficient components such as oily water and moisturizing factor lost by washing to the skin sufficiently.

In order to solve the above problems, it is an object of the present invention to provide a cosmetic composition and a method for supplying useful ingredients to the skin to maintain a healthy skin by supplying the electrolyte, organic acids and saccharides lost after washing.

One embodiment of the present invention provides a cosmetic composition comprising 50 to 75% by weight of electrolyte, 15 to 30% by weight of organic acid and 5 to 15% by weight of saccharides, and is applied to wet skin.

In addition, one example of the present invention comprises the steps of (a) cleaning the skin surface; (b) applying a cosmetic composition comprising 50 to 75% by weight of the electrolyte, 15 to 30% by weight of the organic acid and 5 to 15% by weight of the sugar on the wet skin surface after washing; And (c) wiping the cosmetic composition after application, providing a method for supplying useful components to the skin.

The cosmetic composition according to an embodiment of the present invention provides a moisturizing and soothing effect by supplying useful ingredients such as electrolytes, organic acids, and sugars lost after washing to the skin, and restores the skin to its original state. In addition, the cosmetic composition is applied to the skin and then wiped off, thereby preventing dehydration of the skin that may occur when applied for a long time to maintain a healthy skin condition.

Hereinafter will be described in more detail the method of supplying a cosmetic composition and a useful ingredient to the skin according to an embodiment of the present invention. However, these descriptions are provided by way of example only to assist in understanding the present invention, and the scope of the present invention is not limited by these exemplary descriptions.

Cosmetic composition

One embodiment of the present invention provides a cosmetic composition comprising 50 to 75% by weight of electrolyte, 15 to 30% by weight of organic acid and 5 to 15% by weight of saccharides, and is applied to wet skin.

Skin has more than 70% moisture, and 30% is composed of amino acids, sugars, lipids, minerals and enzymes. Minerals make up less than 5% of the skin, but play the most important role in maintaining physiological activities such as skin cell growth and regeneration, intracellular enzyme action, osmotic pressure control. Therefore, the skin should be supplied with an appropriate amount of minerals, which can be supplied to the electrolyte and the organic acid by the cosmetic composition according to an embodiment of the present invention.

The electrolyte includes calcium (Ca), phosphorus (P), potassium (K), sodium (Na), chlorine (Cl), magnesium (Mg), iron (Fe), iodine (I), copper (Cu), Any one or more kinds of ions constituting cells including zinc (Zn), cobalt (Co), manganese (Mn) and the like can be used without limitation. Preferably, at least one selected from the group consisting of sodium, chlorine, calcium, potassium, and zinc, which can easily control the osmolarity of the skin, may be used. Such an electrolyte may include one or more selected from the group consisting of sodium chloride, calcium chloride, potassium chloride and sodium bicarbonate. The electrolyte helps to maintain a constant osmolarity of the cell, in particular sodium plays an important role in controlling the osmolarity. If the osmolarity is low due to lack of intracellular electrolyte (hypotonic), dehydration may occur or skin aging may be promoted, and if the osmolarity is increased due to the excessive amount of intracellular electrolyte, the intracellular water is also present in a large amount. Swelling can continue. Therefore, cells must be supplied with an appropriate amount of electrolyte. Cosmetic composition according to an embodiment of the present invention, in the total electrolyte, sodium chloride 70 to 90% by weight; 1-5% by weight of calcium chloride; 1 to 10 weight percent potassium chloride; And 5 to 10% by weight sodium bicarbonate. Here, sodium bicarbonate not only supplies sodium to the cells as an electrolyte, but also can easily adjust the acidity of the skin as a pH buffer.

The organic acid may be a carboxylic acid such as lactic acid, citric acid, acetic acid, acetic acid, tartaric acid, palmitic acid or oxalic acid. ; Ascorbic acid; Anything that is not toxic to cells such as uric acid can be used without limitation. Preferably carboxylic acid may be used to help skin moisturizing and acidity control while controlling the physiological activity of the cells. These organic acids are sodium lactate (NaC ₃ H ₅ O ₃ ), zinc acetate, Zn (O ₂ CCH ₃ ) ₂ ) and zinc pyrrolidone-carboxylic acid, C ₁₀ H ₁₂ N ₂ O ₆ Zn) may include one or more selected from the group consisting of. Preferably sodium lactate and zinc acetate, or may comprise sodium lactate and zinc pyrrolidone carboxylate. The organic acid includes an electrolyte such as sodium and zinc, so that the osmolarity of the cell can also be controlled. Cosmetic composition according to an embodiment of the present invention, in the total organic acid, sodium lactate 70 to 99.99% by weight; And 0.0001 to 0.1 wt% of zinc acetate or zinc pyrrolidonecarboxylic acid.

The sugars have a moisturizing effect on the skin and may be supplied to the cell's energy source to help cell growth and regeneration. As the saccharides, monosaccharides and / or disaccharides may be used so that the cells can be readily absorbed by the skin, and the cells can be quickly used. Such sugars are easily available and have excellent moisturizing effects such as glucose, fructose, fructose, mannose and galactose, such as monosaccharides (C ₆ H ₁₂ O ₆ ); And disaccharides (C ₁₂ H ₂₂ O ₁₁ ), such as sucrose, lactose, maltose, and the like. It may preferably comprise glucose, which is the basic energy source of the cell.

Cosmetic composition according to an embodiment of the present invention comprises 50 to 75% by weight of the electrolyte, 15 to 30% by weight of the organic acid and 5 to 15% by weight of sugars, based on the total weight, in addition to 0.1 to 0.1 derived natural materials useful for the skin 15 wt% more.

The natural derived material is to separate only the active ingredient from the natural product, an extract of the natural product or a fermented form of the fermented extract. In particular, naturally derived substances can be obtained from plants that are known to have no side effects or toxicity. Such plants include mistletoe, gamguk, centella, gamguk, chamomile, ginkgo biloba, ginseng, ginseng, mint, green tea, and tea tree leaves. The plant may be extracted by a conventional plant extraction method, preferably using water, an organic solvent or a mixed solvent thereof. For example, ethanol, methanol, glycerin, butylene glycol, and propylene glycol may be used as the organic solvent, and a solvent in which the organic solvent and water are properly mixed may be used. The extraction method using the extraction solvent may be a method such as hot water extraction, organic solvent extraction, for example, at 5 to 40 ℃ while putting the dried or the pulverized product of the plants in the extraction solvent and stirring as needed Extraction may be performed for 1 to 15 days or by heating at 40 to 100 ° C. for 4 to 20 hours. In addition, the amount of the solvent used for the extraction may be 5 to 20 times the extraction raw material, based on the weight ratio.

In addition, the cosmetic composition according to an embodiment of the present invention may further include an additive usable in the cosmetic composition in addition to the electrolyte, organic acid, sugar. Such additives include moisturizers, emulsifiers, ultraviolet absorbers, preservatives, bactericides, antioxidants, organic and inorganic pigments, flavoring agents, cooling agents, limiting agents and the like. The additives can be easily selected by those skilled in the art within a range that does not impair the object and effect of the present invention, the content may be 0.0001 to 5% by weight based on the total weight of the cosmetic composition.

The general cosmetic composition does not contain a pH adjuster to adjust the acidity, the pH is different depending on each component contained in the cosmetic composition, and is neutral (pH 7) by the purified water mainly used as the water of the cosmetic composition. Normal skin has a pH of 5 to 6, and the sebaceous film is formed on the surface of the skin, so that even when using a cosmetic composition different from the pH of the skin, the skin naturally returns to its original pH. However, when the sebum film is excessively removed or the sebum film is not properly formed, when using a cosmetic composition different from the pH of the skin, the homeostasis of the skin may be broken due to the increased acidity, and the skin may be sensitive to small irritation.

On the other hand, the cosmetic composition according to an embodiment of the present invention exhibits weak acidity, including an organic acid, preferably may have a pH of less than 2 to 7, more preferably 5 to 6 pH. When using the cosmetic composition having a pH similar to that of the skin, the skin acidity is kept constant so that the protective function of the skin can be properly performed.

In addition, the cosmetic composition according to an embodiment of the present invention comprises an electrolyte such as sodium chloride, calcium chloride, potassium chloride, sodium bicarbonate, it is possible to maintain an osmolality, such as healthy skin. Osmolarity of the cosmetic composition may be preferably 250 to 320 mOsm / kgH ₂ O, more preferably 280 to 300 mOsm / kgH ₂ O. When maintaining the range of the osmotic pressure concentration to maintain a constant moisture content in the skin, the skin is moist and elastic, it can prevent the occurrence of wrinkles.

Cosmetic compositions according to one embodiment of the present invention may be formulated containing a conventionally acceptable medium or base, the cosmetic composition may be provided in any formulation suitable for topical application. Examples include emulsions obtained by dispersing an oil phase in a solution, an aqueous phase, emulsions obtained by dispersing an aqueous phase in an oil phase, suspensions, microemulsions, microcapsules, microgranules or ionic (liposomes) and nonionic vesicle dispersants, solids, gels. , Powders, pastes, foams or aerosol compositions. More specifically, it may be provided in the form of a cream, skin, essence, lotion, powder, ointment, spray or cone stick.

As such, the cosmetic composition according to an embodiment of the present invention including an electrolyte, an organic acid, and a saccharide is usable in a state in which water remains on the skin after washing or bathing. You can always keep your skin moist and healthy while maintaining homeostasis such as osmolality. In addition, due to the discharge of a large amount of sweat can give sufficient moisture and soothing effect to tired skin.

<How to supply useful ingredients to skin>

The cosmetic composition according to an embodiment of the present invention supplies the useful components insufficient to the skin to adjust the acidity and osmolarity of the skin, and to maintain the homeostasis of the skin. The cosmetic composition includes a large amount of an electrolyte, and when applied to the skin, moisture in the composition of the cosmetic may be evaporated by body temperature, thereby increasing the existing osmotic concentration and acidity. As a result, intracellular moisture may migrate out of the cell, leading to dehydration. In order to compensate for this problem, it is important to wipe off the cosmetic composition immediately after application to the skin.

The method for supplying useful ingredients to the skin according to one embodiment of the present invention includes, for example, (a) cleaning the surface of the skin; (b) applying a cosmetic composition comprising 50 to 75% by weight of the electrolyte, 15 to 30% by weight of the organic acid and 5 to 15% by weight of the sugar on the wet skin surface after washing; And (c) wiping off the cosmetic composition after application.

In the step (a) it removes contaminants such as chemicals by dust, sweat, sebum, color cosmetics attached to the skin surface. In this case, washing agents such as soaps or cleansing foams, cleansing lotions, cleansing creams, cleansing oils, cleansing tissues, etc., which are commonly used for washing, may be used without limitation.

In the step (b) is applied to the cosmetic composition according to an embodiment of the present invention in a state in which water (moisture) remains on the skin surface after washing. The remaining water on the skin after washing is enough to remove only part of the face or body by pressing lightly with a towel or toilet paper to prevent water from flowing down. Preferably, 20 to 80% of the moisture may remain based on the moisture present in the skin after washing. When the cosmetic composition is applied to wet skin, moisture contained in the cosmetic composition may be prevented from rapidly evaporating due to body temperature or external environment, and the osmolarity and acidity of the cosmetic composition applied due to moisture evaporation may be rapidly increased. Elevation can also be prevented. On the other hand, since the skin is removed after the sebaceous film, which is a protective layer, the skin may lose moisture when left for a long time. Therefore, the cosmetic composition is quickly applied. The cosmetic composition helps to restore a healthy skin condition by soothing irritated skin while supplying useful skin lost by washing, including electrolytes, organic acids and sugars, to the skin as useful components of the skin.

In step (c), the cosmetic composition is applied to the skin and then wiped off. The cosmetic composition is applied enough to cover the entire face or body, when the composition is in the form of a spray can be applied directly to the face or body by spraying directly on the face or body or wet enough in a cosmetic toilet, liquid form You can apply it on your face or body by applying it directly with your hand or moisturizing it enough. In the skin to which the cosmetic composition is applied, water remaining after washing and water contained in the cosmetic composition may be evaporated by body temperature, and thus, electrolytes and organic acids remaining after absorption are present. When such electrolytes and organic acids remain on the surface of the skin for a long time, the moisture may move out of the skin to cause dehydration of the skin. Therefore, the cosmetic composition is applied for 5 minutes to prevent the cosmetic composition from remaining on the skin for a long time. Wipe it away. In this case, the cosmetic composition may be wiped off immediately after being applied to the skin, or after gently tapping by hand to absorb. When wiping the cosmetic composition may be used cosmetic towels or towels such as cotton, toilet paper in order to minimize the irritation of the skin, or after lightly rinsed with water to remove the water remaining on the skin with a cosmetic toilet paper or towel.

As such, when using the cosmetic composition according to an embodiment of the present invention, it is possible to maintain homeostasis such as pH and osmolarity of the skin while supplying useful components lost by washing to the skin, thereby keeping the skin always moist and healthy. Can be.

Hereinafter, the present invention will be described in detail with reference to Examples, but the following Examples are merely illustrative of one embodiment of the present invention, and the scope of the present invention is not limited by the following Examples.

[Examples 1 and 2] Preparation of Cosmetic Composition

The cosmetic compositions of Examples 1 and 2 were prepared by dissolving the components shown in Table 1 in 1 L of pure water (distilled water) (unit: g).

ingredient	Example 1	Example 2
Sodium chloride	5.7	5.7
Calcium chloride	0.2	0.2
Potassium chloride	0.3	0.3
Sodium bicarbonate	0.84	0.84
Sodium lactate	2.24	2.24
Zinc acetate	0.0006	-
Pyrrolidone Carboxylic Acid Zinc	-	0.001
glucose	0.9	0.9

The cosmetic compositions of Examples 1 and 2 were prepared at an osmotic pressure of 285 mOsm / kgH ₂ O, pH 5.5.

[ Experimental Example  1] Skin condition improvement effect

In order to confirm the skin condition improvement effect by the cosmetic composition of Example 2, 12 healthy women aged 25 to 45 years were selected as the test subjects and evaluated.

The test subjects were wiped off immediately after washing the cosmetic composition of Example 2 with a spray sufficiently on the face at a temperature of 24 to 26 ° C. and a humidity of 75% after cleansing. Subjects were asked to fill out a questionnaire and subjective efficacy evaluation was conducted. The results of the questionnaire survey of the cosmetic composition immediately before use of the basic product are shown in Table 2 below.

	Number of respondents
	Very bad	A little bad	usually	Little good	Very good
Skin texture	-	-	4	6	2
Exfoliation	-	-	6	5	One
Pore shrinkage	-	-	10	One	One
Moisturizing	-	-	2	3	7
Water and moisture balance	-	-	4	5	3
Skin tone	-	-	6	5	One
Irritation	-	-	6	3	3

As shown in Table 2, the test subjects do not feel much irritating about the cosmetic composition of Example 2, immediately after using the cosmetic composition, the skin texture, exfoliation, oil and moisture balance, skin tone was improved, especially moisturizing It was confirmed that this felt very improved.

In addition, the results of the questionnaire survey using the basic product and / or makeup product after use of the cosmetic composition are shown in Table 3 below.

	Number of respondents
	Very bad	A little bad	usually	Little good	Very good
Skin texture	-	-	4	3	5
Exfoliation	-	-	6	6	-
Pore shrinkage	-	-	8	3	One
Moisturizing	-	-	3	5	4
Water and moisture balance	-	-	5	4	3
Skin tone	-	-	7	3	2
Irritation	-	-	6	3	3

As shown in Table 3, the test subjects also felt that the skin texture, exfoliation, oil and moisture balance, and skin tone of the face were improved when using the cosmetic composition of Example 2 and then using the basic product and the makeup product. It was confirmed that it felt very improved.

In addition, the survey results of the overall satisfaction of the test subjects using the cosmetic composition is shown in Table 4 below.

	Number of respondents
	Very bad	A little bad	usually	Little good	Very good
satisfaction	-	-	3	6	3

As shown in Table 4, the test subjects were found to be generally satisfied with the cosmetic composition of Example 2.

[ Experimental Example  2] wrinkle improvement

In order to confirm the wrinkle improvement effect by the cosmetic composition of Example 2, two healthy women aged 25 to 45 years were selected as the test subjects and evaluated.

The test subjects were wiped off immediately after washing the cosmetic composition of Example 2 with a spray sufficiently on the left or right side of the face at a temperature of 24 to 26 ° C. and a humidity of 75% after washing the face. The cosmetic composition was not applied. The facial wrinkles of the subjects were analyzed by image measurement using a multi-facial inspection camera system (Facial analysis system, Janus), and the results are shown in Table 5 below.

	Number of wrinkles (pcs)
	Example 2	Comparative Example 1
Subject 1	3	11
Subject 2	9	16

As shown in Table 5, the test subjects were found to reduce facial wrinkles using the cosmetic composition of Example 2.

Overall, the cosmetic composition according to an embodiment of the present invention provides not only sufficient moisture to the skin by providing useful components such as electrolytes, organic acids and sugars to the skin from which the protective film is removed by washing the face, but also removing skin texture, skin tone, and exfoliation. It is also effective for improvement, and it is confirmed that the overall skin improvement effect is excellent.

Claims (9)

1. A cosmetic composition comprising 50 to 75% by weight of an electrolyte, 15 to 30% by weight of an organic acid and 5 to 15% by weight of a saccharide and applied to wet skin.
2. The method of claim 1,

   Wherein the electrolyte is a cosmetic composition that is applied to the skin with water that comprises one or more selected from the group consisting of sodium chloride, calcium chloride, potassium chloride and sodium bicarbonate.
3. The method of claim 1,

   Wherein the organic acid is a cosmetic composition applied to the skin with water that comprises at least one selected from the group consisting of sodium lactate, zinc acetate and zinc pyrrolidone carboxylic acid.
4. The method of claim 1,

   The saccharide is a cosmetic composition that is applied to the skin of the water containing glucose.
5. The method of claim 1,

   Cosmetic composition that is applied to the skin with moisture that further comprises a natural derivative.
6. The method of claim 1,

   Cosmetic composition to be applied to the skin with an osmolarity (osmolarity) of 250 to 320 mOsm / kgH ₂ O.
7. The method of claim 1,

   Cosmetic composition to be applied to the skin with water of more than pH 2, less than pH 7.
8. (a) cleaning the skin surface;

   (b) applying a cosmetic composition comprising 50 to 75% by weight of the electrolyte, 15 to 30% by weight of the organic acid and 5 to 15% by weight of the sugar on the wet skin surface after washing; And

   (c) wiping the cosmetic composition after application

   Comprising, the method of supplying useful ingredients to the skin.
9. The method of claim 8,

   A method for supplying skin with electrolytes, organic acids and sugars lost by washing.