KR960012606B1 - Cosmetics for uv interception of stereometry state and its preparation - Google Patents

Abstract

The oil cosmetics for UV interception is that which scattering the oil containing UV interceptor into alcohol by using dispersing agent e.g. silica as a spherical form of 0.1-20mm diameter. It is prepared by adding one or more 1-20wt.% UV interceptor to oil, dispersing by adding 0.01-1.0 wt.% dispersing agent e.g. silica, adding it to ethanol solution with stirring to obtain the final product. The obtd. oil cosmetics has a feeling of cooling by improving the faults of oil cosmetics e.g. the feeling of sticky.

Description

Quadruple sunscreen oil cosmetic and its manufacturing method

The present invention relates to a sunscreen oil cosmetic for dispersing oil containing a sunscreen agent in an aqueous solution of alcohol with a particle size of 0.1-20 mm in diameter using powder, and a manufacturing method thereof.

In general, UV blocking products are used to protect the skin by preventing skin erythema and pigmentation caused by ultraviolet rays among the sun rays reaching the earth. It blocks only UVB (290 ~ 320nm) that causes erythema among ultraviolet rays. There are sunscreen products that block both UVA (320-400nm) as well as tanning products and UVB. These sun protection products often show sun protection factor (SPF) values that indicate sun protection. In the sunscreen cosmetics can be divided into two types of raw materials used to give a sunscreen effect.

One of them is an organic molecule type UV absorber that absorbs ultraviolet rays contained in sunlight and releases it by relaxing this energy in the raw molecule. The other is physically reflecting ultraviolet rays reaching the skin, There are sunscreens in the form of inorganic powders that scatter. Currently, organic molecular UV absorbers that can be used in cosmetics are regulated by the law (Bossau Announcement No. 90-29, 90. 3. 28., designation of cosmetic raw materials and the limit of blending of special ingredients) in consideration of skin stability.

The types of sunscreen products that are mainly sold on the market include oil-based products or oil-based products such as creams and lotions.

In the case of emulsified products, the use of inorganic powder in addition to the organic molecular type ultraviolet absorber has the advantage of enhancing the blocking effect of ultraviolet rays, so the current type of products mainly for the sunscreen products are predominantly.

However, a hydrophilic emulsified product has a disadvantage in that it is easily washed away with sweat or water. In the case of a lipophilic emulsified product, the water resistance is good but the spreadability is poor and sticky compared to the hydrophilic emulsified product. And in order to make a stable emulsified product, a considerable amount of surfactant (emulsifier) must be used, which may cause skin irritation.

Oil products are usually manufactured by dissolving sunscreen agents in liquid oily substances such as mineral oils such as liquid paraffin and vegetable oils such as olive oil, and adding flavorings, colorants and various oil-soluble additives thereto. These products are used as sun tanning or sunscreen products that cover a large area of the body. The advantage of oil products is that they can be easily applied to large areas and are not easily washed by sweat or water. However, there are also disadvantages of use such as stickiness or grease of oil. In general, there are various ways to improve the usability of the oil, but the representative ones are the method of making an emulsified product as described above, and adding a volatile substance compatible with alcohol or oil to the oil. However, this method did not yield satisfactory sunscreen oil products.

Therefore, the present inventors have devised a method of dispersing oil in an aqueous alcohol solution while studying a product that can satisfy both the advantages of the oil product and the advantages of the emulsified product.

In more detail, the purpose of the present invention is to provide a new type of cosmetics and a manufacturing method of making the same by dispersing oil containing an sunscreen agent in an aqueous alcohol solution without using an existing organic surfactant and using powder instead. will be.

That is, the powder was used in the presence of spherical oil in the aqueous solution of the oil to improve the bad feeling of the oil product, improve the spreadability during use and to give the skin a refreshing feeling by using the evaporation of alcohol. In addition, since the powder is used without the surfactant, the irritation to the skin can be reduced, and the physical scattering effect of the ultraviolet light due to the powder itself can be expected to some extent.

At this time, by selecting the appropriate powder and by adjusting the ratio of alcohol and water, the powder may be adsorbed at the interface between the oil and the aqueous alcohol solution to form a quadrature of a substantially constant size (about 0.1 to 20 mm). Since the oil droplet dispersed in the aqueous alcohol solution is not large in the interfacial tension between the oil and the aqueous alcohol solution, the oil droplet is easily broken into fine particles in the aqueous alcohol solution by gently shaking, and when it is left again, the powder is adsorbed to the interface. Reconstruct a quadrature of constant size, such as That is, in the present invention, by making a quadrature sunscreen oil product, not only can significantly increase the water resistance compared to a hydrophilic emulsified product, but also reduces the stickiness of the conventional sunscreen oil product and also provides a feeling of refreshing to the skin. Could improve.

In addition, these products have an unusual appearance beauty by allowing the oil to be present in a quadrature of constant size. In addition, there is an advantage that can be used with a moisturizer or a water-soluble bioactive material that was difficult to use in existing oil products.

Referring to the manufacturing method of the present invention will be described. First, among sun-soluble UV absorbers that can be used in cosmetics such as butylmethoxydibenzoylmethane, octylmethoxycinnamate, octyldimethyltaba, oxybenzone, etc., sunscreens are selected according to the desired SPF value of the final product and liquid paraffin, tri ( 1 to 20% by weight in dissolving oils such as caprylic and caprylic acid) glycerin, squalane and olive oil. After mixing fragrances, oil-soluble pigments, oil-soluble bioactive substances, and fat-soluble vitamins, the interface between oil and ethanol aqueous solution to be used in powders such as titanium dioxide, talc, mica, aluminum silicate, calcium silicate, silica, and mica titanium Choose 1 ~ 4 kinds of powders that can be adsorbed best to and disperse them in oil. In this case, the type and amount of powder have a great influence on the shape, transparency, and size of the quadrature that the final product will have, so determine the size of the desired quadrature and use it within the range of about 0.01 to 1.0% by weight.

In addition, since the ratio of ethanol and water plays an important role in ethanol aqueous solution, it is generally advantageous for the quadrature formation to adjust the ratio almost equal to the specific gravity of the complex oil phase. Water-soluble dyes, water-soluble bioactive substances, humectants, etc. are added to the ethanol aqueous solution as needed, and in addition, colloidal substances such as aluminum hydroxide gel, sodium chloride, magnesium chloride, calcium chloride, etc. are used to control the shape and size of the particles. Ionic substances such as magnesium sulfate may also be added. These interface aids are different depending on the composition of the oil and the amount of use, but it is effective to use in the range of about 0.01 ~ 3.0% by weight. When the ethanol aqueous solution layer of the oil layer is prepared in this way, an oil layer is added to the ethanol aqueous solution layer and stirred and mixed. Then, when it is left for a certain time, an oil droplet of about 0.1 to 20 mm in diameter and preferably about 1 to 5 mm in diameter is formed. The size and shape of these oil droplets can be controlled by the type of oil used, the ratio of the oil to the aqueous alcohol solution and the amount of powder used.

The product (A) of the present invention prepared as described above and the normal sunscreen oil product (B) were tested on 30 women aged 20 to 40, and the following results were obtained.

TABLE 1

Basic prescription of sunscreen cosmetics used in the test

TABLE 2

Evaluation result on appearance and usability

As described above, it was found that the product of the present invention is unusual and beautiful in appearance compared to the general UV protection product, and also excellent in the feeling of use after use as well as the feeling on the skin during use.

Specific embodiments of the present invention are as follows.

Example 1

Method of preparation: Octylmethoxycinnamate, a sunscreen, is added to tri (capryl-caprylic acid) glycerin, followed by adding an appropriate amount of oil-soluble pigment and flavoring agent. To this, powdered titanium dioxide is added and well dispersed. Meanwhile, aluminum chloride and aluminum hydroxide gel (1% aqueous solution) were added to the purified water, mixed well, and ethanol (95%) was slowly added thereto. When an aqueous ethanol solution is prepared, slowly stir it and slowly add the prepared oily raw materials and stir and then leave.

Example 2

Method of Preparation: Add octylmethoxycinnamate, octyldimethylpava, butylmethoxydibenzoylmethane as sunscreen to liquid paraffin and macadamianet oil, and add an appropriate amount of fragrance thereto. Add talc and mica titanium and disperse well. Meanwhile, glycerin, magnesium sulfate, and aluminum hydroxide gel (1% aqueous solution) are added to the purified water and mixed well, and then ethanol (95%) is slowly added thereto. Stir it slowly and leave to stand.

Example 3

Preparation Method: Add octylmethoxycinnamate and octyldimethylpava to liquid paraffin, and then add an appropriate amount of oil-soluble pigment and flavoring agent. Add talc and guanine pearl to it and disperse well. Meanwhile, calcium chloride and aluminum hydroxide gel (1% aqueous solution) are added to the purified water, mixed well, and ethanol (95%) is slowly added thereto. When the ethanol aqueous solution is prepared, while slowly stirring, the previously prepared oily raw material is added at a very slow speed and left.

Example 4

Method of preparation: Tri (capryl-caprylic acid) glycerin, cetyloctanoate, olive oil and jojoba oil are added to the liquid paraffin, and octylmethoxycinnamate and oxybenzone are added thereto. Add bill palmitate. Then add talc and mica and disperse well. Panthenol, calcium chloride, sodium chloride, and aluminum hydroxide gel (1% aqueous solution) are added to the purified water, mixed well, and ethanol (95%) is slowly added thereto. Oil is added to this ethanol aqueous solution, and the mixture is stirred slowly and left to stand.

Example 5

Preparation method: Squalane, tri (capryl-capric acid) glycerin, castor oil, macadamianet oil, olive oil, jojoba oil, rose hip oil, tocopherol acetate, octylmethoxycinnamate, octyldimethylpaba, in liquid paraffin Butylmethoxydibenzoylmethane and oxybenzone are added and the fragrance is added to it. Calcium silicate and mica titanium are added to disperse well. Meanwhile, propylene glycol, magnesium chloride, and aluminum hydroxide gel (1% aqueous solution) are added to the purified water, mixed well, and ethanol (95%) is slowly added thereto. The oily raw material prepared above was added to the aqueous ethanol solution at a very slow rate, stirred and left to stand.

Claims (8)

A sunscreen oil cosmetic comprising an oil containing sunscreen dispersed in a sphere having a diameter of 0.1-20mm using powder or powder and an ionic substance in an aqueous alcohol solution. The sunscreen oil cosmetic according to claim 1, wherein the sunscreen agent contains 1 to 20% by weight of one or more kinds of oil. The oil cosmetic for sunscreen according to claim 1, wherein the aqueous alcohol solution is used in an amount of 10 to 80% by weight. The oil cosmetic for sunscreen of claim 1, wherein inorganic powders such as titanium dioxide, talc, mica, aluminum silicate, calcium silicate, silica, mica titanium, and organic powders such as guanine pearl are used. The oil cosmetic for sunscreen according to claim 1 or 4, wherein the powder is used in an amount of 0.01 to 1.0% by weight or more. The oil cosmetic of claim 1, wherein the ionic substance is an aqueous aluminum hydroxide gel solution, sodium chloride, magnesium chloride, calcium chloride, magnesium sulfate, or the like. The oil cosmetic for sunscreen according to claim 1 or 6, wherein the ionic substance uses 0.01 to 3.0% of one or more kinds. 1 to 20% by weight of the sunscreen is added to the oil and 0.01 to 1.0% by weight of powder to disperse and then added to the ethanol aqueous solution, the method of producing a sunscreen oil cosmetics, characterized in that the stirring.