KR101511253B1 - Composition comprising pure vitamin c for whitening - Google Patents

Abstract

The present invention relates to a whitening cosmetic composition containing pure vitamin C. More specifically, the cosmetic composition of the present invention contains vitamin C tablets and lotion, which are prepared by preparing purified vitamin C having poor long-term storage stability And can be usefully used as a whitening cosmetic composition which exhibits an effect of dissolving foam in a transparent state by improving the storage stability and by improving the problem that the foamed tablets are added to the skin lotion to form precipitates that have already been generated.

Pure vitamin C, whitening, foaming agent, lotion

Description

COMPOSITION COMPRISING PURE VITAMIN C FOR WHITENING COMPOSITION COMPRISING PURE VITAMIN C [0002]

The present invention relates to a whitening cosmetic composition containing pure vitamin C tablet and lotion.

      In addition to a drug called foamed tablets, it refers to soluble tablets containing sodium hydrogencarbonate and organic acids, which dissolve in water while generating carbon dioxide. In the case of the foaming sold in the market, there is a phenomenon such that the insoluble excipient is not transparently dissolved when added to water and cloudy, and the precipitate sinks when stored. This is the most drunk drink, but it is not a problem of cloudiness, but when applied to cosmetics, it is visually fatal and has inconvenience to use. Also, since the content of sodium bicarbonate is 50 to 70% by weight in the case of the commercially available vitamin C foam, the content of vitamin C is not more than 30 to 50% by weight at the maximum. In the case of ordinary tablets containing a large amount of vitamin C of 70 to 90% by weight, it has no foaming effect when added to water and general lotion, and is almost insoluble and unusable.

       In general, pure vitamin C (L-ascorbic acid) is used in a very small amount in cosmetic formulations because it is difficult to maintain long-term storage stability when dissolved in water. In most cases, It is used in formulations containing the disadvantage that the feeling of use is heavy or the feeling of oil is felt.

 The present inventors stably developed a foam preparation containing a large amount of pure vitamin C in order to give a foaming effect for the first time. However, the present inventors have developed a foam preparation containing a large amount of pure vitamin C, But it was not suitable for use as cosmetics such as sinking precipitates when stored. In case of foaming, it is necessary to prepare only water-soluble agents such as sugar to melt transparently when added to cosmetic lotion, which causes the stability of foaming stability which is very unstable to moisture to become more unstable.

Therefore, there is a demand for a cosmetic composition containing pure vitamin C tablets in which the occurrence of precipitates is small, and which is foamed and dissolved in a transparent state.

Therefore, the present inventors designed sodium hypochlorite, which gives foaming effect when added to water, to the cosmetic lotion so as to give foaming effect even when general tablets other than foaming tablets are added. In the case of tablets, the content of pure vitamin C could be increased to 70 ~ 95 wt% by removing sodium bicarbonate.

Accordingly, an object of the present invention is to provide a cosmetic composition which has a foaming effect by adding purified tablets containing pure vitamin C to cosmetic lotion, and which does not generate precipitates when stored transparently.

Another object of the present invention is to provide a cosmetic composition for whitening.

In order to accomplish the above object, the present invention provides a whitening cosmetic composition containing pure vitamin C tablet and lotion.

The vitamin C tablet of the present invention is prepared by adding 0.5 to 95 parts by weight, preferably 1 to 95 parts by weight, of arbutin to 0.5 to 10 parts by weight, preferably 1 to 10 parts by weight, of pure vitamin C (L-ascorbic acid) 0.5 to 10 parts by weight, preferably 1 to 10 parts by weight, of polyethylene glycol 6000;

The cosmetic lotion preferably comprises 0.5 to 10 parts by weight, desirably 1 to 8 parts by weight of sodium bicarbonate, 5 to 20 parts by weight, preferably 10 to 20 parts by weight of moisturizer, and 0.5 to 8 parts by weight of ethanol, May comprise 1 to 8 parts by weight of water and a balance of water.

The pure vitamin C may have a purity of 90 to 100%, preferably a purity of 99 to 100%.

The polyethylene glycol 6000 has the structural formula H (OCH ₂ CH ₂ ) nOH, n is from 158 to 204, and the molecular weight (Mw) is from 7,000 to 9,000.

The pure vitamin C acts on stain and freckles to exhibit a whitening effect. It is preferable that the pure vitamin C is contained in the above-mentioned content range for the purpose of enhancing the whitening effect.

 The arbutin acts as an excipient for enhancing a whitening effect and dissolving in water, and is preferably contained in the above-mentioned content range in order to exhibit an appropriate whitening effect and solubility enhancing effect.

The polyethylene glycol 6000 acts as a lubricant when tablet is tableted and serves to increase the tableting speed. It is preferable that the polyethylene glycol 6000 is contained in the above content range to exhibit the tableting speed increasing effect.

The sodium bicarbonate is preferably contained in the above-mentioned content range in order to exhibit a foaming effect when the tablet is added to the skin lotion, to increase the melting speed of the tablet, and to control the pH of the product.

Therefore, the present invention is designed so that sodium bicarbonate which gives foaming effect when added to foamed water is added to cosmetic lotion to give foaming effect even when general tablets other than foamed tablets are added. In the case of tablets, the content of pure vitamin C could be increased to 80 ~ 95 wt% by removing sodium bicarbonate, and the stability could be secured by using only water - soluble materials so that it was transparent when it was melted in the lotion and no precipitate was formed.

The humectant may be at least one selected from the group consisting of polyols, sugars, methylglucose-20 and beta-glucan.

The polyols may be at least one selected from the group consisting of glycerin, butylene glycol and dipropylene glycol, and the saccharides may be at least one selected from the group consisting of trehalose, xylitol, erythritol and sorbitol, preferably glycerin, Trehalose, xylitol, erythritol, sorbitol, methylglucose-20 and beta-glucan may be used alone or in combination.

The ethanol is used as a dissolving agent when an antiseptic is added, thereby increasing the foaming rate.

The cosmetic composition of the present invention may contain various additives such as coloring matters, preservatives, bactericides, metal ion chelating agents, various cosmetic additives, and the like within the range not impairing the object of the present invention.

It is preferable that the cosmetic composition of the present invention contains 4.5 to 6 parts by weight of purified vitamin C tablets and cosmetic lotion for the whole composition. That is, the content of the extract is preferably at least the above-mentioned minimum value so as to attain the minimum skin whitening effect, and the content of the extract is preferably not more than the maximum value in consideration of the deterioration of use feeling due to the excessive addition and the applicability to various formulations . At this time, it is preferable that the content of the extract is appropriately adjusted within the above range according to the content of the components contained in the formulation or cosmetic composition.

The cosmetic composition of the present invention can be used for external ointment for skin, basic cosmetics, makeup cosmetics, and body cosmetics. Examples of the basic cosmetics include essences, lotions, creams, gels, toners, packs, massage creams, milks, and the like; Examples of the makeup cosmetics include a foundation, a makeup base, and the like; Body cosmetics include soaps, liquid cleansers, bath salts, sunscreen creams, sun oils, and the like.

In order to improve the physical properties of the composition, a perfume, a colorant, a bactericide, an antioxidant, an antiseptic, a moisturizer, a thickening agent, an inorganic salt, a synthetic polymer material and the like may be further added.

The cosmetic composition of the present invention contains vitamin C tablets and cosmetic lotion, and it has been found that pure vitamin C, which has poor long-term storage stability, is prepared in purified form to improve storage stability, and a foamed tablet is added to the skin lotion to form a precipitate And thus the composition can be advantageously used as a whitening cosmetic composition that exhibits an effect of being transparently dissolved by foaming.

Hereinafter, the present invention will be described in detail with reference to Examples and Experimental Examples. However, the following Examples and Experimental Examples are merely illustrative of the present invention, and the present invention is not limited to the following Examples and Experimental Examples.

Example  1. Preparation of tablets

The tablets of the present invention were mixed using the Hensel mixer (manufactured by Mizuho Industrial) with the composition described in the following Table 1, and then tableted using a tablet machine (Dott. Bonapace & C) Was used as a sample in the following experimental example.

Example  2. Production of lotion

In the cosmetic lotion of the present invention, the compositions shown in Table 2 below were mixed and discharged at room temperature using a dispenser at a rotational speed of 1000 RPM to obtain 7 ml of lotion, which was used as a sample in the following experimental example

Example  3. Mixing tablets and lotions Cosmetics  Preparation of composition

0.45 g of the tablet prepared in Example 1 was added to 7 ml of the cosmetic lotion prepared in Example 2 to prepare a cosmetic composition, which was used as a sample in the following experimental example (hereinafter referred to as "JH1").

Comparative Example  1. Preparation of Tablets Containing Sodium Bicarbonate

The composition of Comparative Example 1 was obtained in the same manner as in Example 1 except that sodium bicarbonate was added in the compositions shown in the following Table 1 to obtain 0.45 g of tablets and used as a comparative sample in the following experimental examples.

Comparative Example  2. Preparation of lotion without sodium bicarbonate

The composition of Comparative Example 2 was obtained in the same manner as in Example 2 except that sodium bicarbonate was not added in the compositions shown in the following Table 2 to obtain 7 ml of lotion and used as a comparative sample in the following experimental examples.

Comparative Example  3. Preparation of mixed composition of tablet and sodium bicarbonate-free lotion

The tablets of Example 1 were added to the cosmetic lotion of Comparative Example 2 to prepare a composition, which was used as a sample in the following experimental examples (hereinafter referred to as "JH2").

Comparative Example  4. Preparation of mixed composition of sodium bicarbonate-free tablet and lotion

The tablets of Comparative Example 1 were added to the cosmetic lotion of Example 2 to prepare a composition, which was used as a sample in the following experimental examples (hereinafter referred to as "JH3").

Comparative Example 5. Preparation of a mixed composition of sodium bicarbonate-added tablet and sodium bicarbonate-free lotion

The tablet of Comparative Example 1 was added to the cosmetic lotion of Comparative Example 2 to prepare a composition, which was used as a sample in the following Experimental Example (hereinafter referred to as 'JH4').

Manufacture of tablets Component (unit: parts by weight) Example 1 Comparative Example 1 Sodium bicarbonate 0.00 50.00 Citric acid 0.00 5.00 Ascorbic acid 92.00 30.00 Arbutin 1.00 1.00 PI-150 7.00 12.00 Insoluble stabilizer 0.00 2.00

Manufacture of lotion Component (unit: parts by weight) Example 2 Comparative Example 2 Sodium bicarbonate 5.00 0.00 Tree sodium 0.02 0.02 Methylparaben 0.20 0.20 glycerin 5.00 5.00 Sorbitol 3.00 3.00 Beta Glucan 5.00 5.00 Methylglucose-20 5.00 5.00 ethanol 5.00 5.00 water To 100 To 100

Experimental Example  1. Measurement of foaming effect, transparency and precipitation

In order to measure the foaming effect, the transparency and the settling phenomenon of the compositions prepared in the above Examples and Comparative Examples, experiments were carried out through visual observation, and the results are shown in Tables 3 and 4 below.

number sample Foam effect Whether it is transparent Precipitation phenomenon One The JH-1 of Example 3 Foaming and dissolving Transparency none 2 The JH-2 of Comparative Example 3 Foaming and non-melting - - 3 The JH-3 of Comparative Example 4 Foaming and dissolving opacity Sedimentation 4 JH-4 of Comparative Example 5 Foaming and dissolving opacity Sedimentation

sample Observation period Observation temperature 25 ℃ 0 ℃ 45 ° C 50 ℃ Example 1 1 month Good Good Good Good Comparative Example 1 1 month Good Good Good Good Example 2 1 month Good Good Good Good Comparative Example 2 1 month Good Good Good Good

As a result of the experiment, it was confirmed that the composition of Example 3 exhibited foaming effect, dissolves transparently, and had no precipitation phenomenon, as shown in Tables 3 and 4 above. In general, sodium bicarbonate, which is a main component of foam, can be absorbed in the air even if it is accompanied with an organic acid component in an anhydrous condition. Therefore, an insoluble stabilizer is used to prevent such reaction. However, such an insoluble stabilizer causes sedimentation when mixed with the lotion and reacted.

The cosmetic composition of the present invention (Example 3 above) contains a large amount of pure vitamin C (L-ascorbic acid), which is very poor in storage stability, and not only improves long-term stability in tablet form, And successfully integrated the existing pharmaceutical technology into cosmetics.

Claims (6)

A cosmetic composition for whitening comprising vitamin C tablet and lotion, The vitamin C tablet contains 70 to 95 parts by weight of pure vitamin C (L-ascorbic acid), 0.5 to 10 parts by weight of arbutin, and 0.5 to 10 parts by weight of polyethylene glycol 6000 based on 100 parts by weight of the total composition ; Wherein the cosmetic composition comprises 0.5 to 10 parts by weight of sodium bicarbonate, 5 to 20 parts by weight of a moisturizer, 0.5 to 8 parts by weight of ethanol, and the balance water, based on 100 parts by weight of the total composition. delete The method according to claim 1,       Wherein the pure vitamin C has a purity of 90 to 100%. The method according to claim 1, Wherein the moisturizing agent is at least one moisturizing agent selected from the group consisting of polyols, saccharides, methylglucose-20, and beta-glucan. 5. The cosmetic composition according to claim 4, wherein the polyol is at least one selected from the group consisting of glycerin, butylene glycol and dipropylene glycol, and the saccharide is at least one cosmetic selected from the group consisting of trehalose, xylitol, erythritol and sorbitol Composition. The method according to claim 1, Wherein the cosmetic composition is in the form of a toner, an essence, a lotion, a cream, a gel, a pack, a massage cream, an emulsion, a foundation, a makeup base, a soap, a liquid cleanser, a bath agent, a sunscreen cream or a sun oil.