JP2005041808A - Cosmetic - Google Patents

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Publication number
JP2005041808A
JP2005041808A JP2003202342A JP2003202342A JP2005041808A JP 2005041808 A JP2005041808 A JP 2005041808A JP 2003202342 A JP2003202342 A JP 2003202342A JP 2003202342 A JP2003202342 A JP 2003202342A JP 2005041808 A JP2005041808 A JP 2005041808A
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JP
Japan
Prior art keywords
ascorbic acid
cosmetic
acid phosphate
magnesium salt
precipitation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2003202342A
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Japanese (ja)
Inventor
Sadanori Saka
貞徳 坂
Yoichi Yashiro
洋一 八代
Kunihiro Miyamoto
國寛 宮本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nonogawa Shoji Ltd
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Nonogawa Shoji Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to JP2003202342A priority Critical patent/JP2005041808A/en
Publication of JP2005041808A publication Critical patent/JP2005041808A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To prepare a magnesium L-ascorbate phosphate-containing cosmetic which prevents the precipitation of magnesium L-ascorbate phosphate and has enhanced daily stability. <P>SOLUTION: This cosmetic is characterized by containing the magnesium L-ascorbate phosphate and potassium citrate, preferably in a compounding ratio of 1/1 to 2/1. The cosmetic can especially prevent the precipitation of the magnesium L-ascorbate phosphate, and can further improve stickiness. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【産業上の利用分野】本発明は化粧料、さらに詳しくはL−アスコルビン酸リン酸エステルマグネシウム塩を安定に配合してなる化粧料に関する。
【0002】
【従来の技術】L−アスコルビン酸リン酸エステルマグネシウム塩は水溶性のビタミンC誘導体であり、美白化粧料に汎用されている。しかし、該化合物を化粧水に配合すると、経日的に溶解性が低下し沈澱が生じる傾向があり、安定な組成物が得られにくいなどの問題があった。そこで、該化合物を安定に化粧料に配合する検討がなされており、例えば、非イオン性界面活性剤と電解質を必須成分とする安定化(特許文献1)、オキシ酸または水溶性高分子による安定化(特許文献2)、カルボキシル基と水酸基の比が1の有機アルカリ金属塩による方法(特許文献3)などが開示されている。さらに特定の範囲のHLBの非イオン性界面活性剤と有機酸のナトリウム塩で安定化する方法(特許文献4)も開示されている。しかしながら、充分に問題が解決されておらず、その解決が望まれている。
【0003】
【特許文献1】
特開昭63−243014号公報
【特許文献2】
特開平5−339123号公報
【特許文献3】
特開平5−331020号公報
【特許文献4】
特開平7−277940号公報
【0004】
【発明が解決しようとする課題】本発明の目的はL−アスコルビン酸リン酸エステルマグネシウム塩を配合する化粧料において、L−アスコルビン酸リン酸エステル塩の沈澱を防止し、経日安定性に優れた化粧料を提供するものである。
【0005】
【課題を解決するための手段】本発明者等は、上記課題を達成するために鋭意検討した結果、L−アスコルビン酸リン酸エステルマグネシウム塩を含有する化粧料において、クエン酸カリウムを配合すれば、経日におけるL−アスコルビン酸リン酸エステルマグネシウム塩の沈澱を防止することを見出だし、本発明を完成するに至った。さらに、特定の配合比率の範囲内ではベースのべたつきも緩和できることを発見した。
【0006】すなわち、本発明はL−アスコルビン酸リン酸エステルマグネシウム塩およびクエン酸カリウムを配合し、L−アスコルビン酸リン酸エステルマグネシウム塩の沈澱を防止し、さらにべたつきを改善できる化粧料を提供するものである。
【0007】
【本発明の実施の形態】本発明に用いるL−アスコルビン酸リン酸エステルマグネシウム塩は、美白剤、にきび跡改善剤として汎用されており、商業的に入手することができ、その配合量は特に限定するものではないが組成物全量に基づいて0.1〜10重量%であり、好ましくは3〜8重量%、特に3〜6重量%が好ましい。
【0008】本発明に用いるクエン酸カリウムの配合量は特に限定されないが、好ましくはL−アスコルビン酸リン酸エステルマグネシウムとクエン酸カリウムの配合比率が1/1〜2/1の範囲である。1/1以上の場合、べたつきが改善できない場合があり、2/1以下では安定性が不十分の場合があるからである。
【0009】本発明の化粧料の剤型は特に限定されないが、例えば化粧水、美容液、乳液、クリーム、ジェルなどに利用でき、発明の効果を妨げない範囲で、公知のキサンタンガム、ヒドロキシメチルセルロースなどの増粘剤、界面活性剤、油分、防腐剤、色素、保湿剤、キレート剤、紫外線吸収剤、薬効剤、着香剤等を適宜配合することができる。
【0010】
【実施例】以下に、実施例をあげ、本発明を詳細に説明するが、本発明はこれら実施例に限定されるものではない。また、実施例中の[%]は[重量%]を示す。表1に示す実施例1〜7、および比較例1〜5を常法により製造して、評価した。評価方法を示す。
【0011】(評価方法1)経日安定性
調製した実施例(および比較例)を透明ガラス瓶に分取し、室温、40℃並びに3ヶ月放置した後、沈澱を観察し、次の判定基準より評価した。
<判定基準>
−:沈澱を認めない。
±:沈澱を認める。
+:著しい沈澱を認める。
表1に結果を示す。 表1から実施例は比較例に比べて、室温、40℃、3ヶ月後でL−アスコルビン酸リン酸エステルマグネシウム塩の沈澱が抑制されていると認められた。
【0012】
(評価方法2)べたつき感
専門評価パネル10名による実使用テストをおこなった。得られた化粧料を肌に塗布した際の「べたつき感のなさ」について下記基準にて5段階評価し、さらにその平均点から判定した。
[評価]
5点:非常に良好。
4点:良好。
3点:普通。
2点:やや不良。
1点:非常に不良。
[評価]
◎:平均点4.5点以上
○:平均点3.5点以上4.5点未満
△:平均点2.5点以上3.5点未満
×:平均点2.5点未満
【0013】
【表1】

Figure 2005041808
【0014】
実施例8 化粧水
Figure 2005041808
(1)〜(8)を混合して均一に溶解し化粧水を得た。
【0015】
実施例9 美容液
Figure 2005041808
(1)〜(8)を混合して均一に溶解し化粧水を得た。
【0016】
実施例10 乳液
Figure 2005041808
A(1)〜(5)を均一に混合溶解する。
B(6)〜(9)を均一に混合溶解する。
C BにAを加え均一に混合溶解して、乳液を得る。
【0017】
実施例11 クリーム
Figure 2005041808
A (1)〜(7)を75℃に加熱溶解する。
B (8)〜(13)を75℃に加熱溶解する。
C AにBを加えて乳化する。
D Cを35℃まで冷却してクリームを得る。
実施例8〜11は、いずれも室温、40℃、3ヶ月後においてもL−アスコルビン酸リン酸エステルマグネシウム塩の沈澱は認められなかった。
【0018】
【発明の効果】本発明によれば、L−アスコルビン酸リン酸エステルマグネシウム塩含有の化粧料においてクエン酸カリウムを配合するとL−アスコルビン酸リン酸エステルマグネシウム塩の沈澱が著しく防止され、特に、L−アスコルビン酸リン酸エステルマグネシウム塩およびクエン酸カリウムの配合比率が1/1〜2/1の範囲にはべたつきが気にならないという効果もある。[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cosmetic, and more particularly to a cosmetic comprising a stable blend of L-ascorbic acid phosphate magnesium salt.
[0002]
2. Description of the Related Art L-ascorbic acid phosphate magnesium salt is a water-soluble vitamin C derivative and is widely used in whitening cosmetics. However, when the compound is added to a lotion, there is a problem that the solubility tends to decrease with time and precipitation tends to occur, and it is difficult to obtain a stable composition. Therefore, studies have been made to stably blend the compound into cosmetics, for example, stabilization using a nonionic surfactant and an electrolyte as essential components (Patent Document 1), stabilization with an oxyacid or a water-soluble polymer. (Patent Document 2), a method using an organic alkali metal salt having a ratio of carboxyl group to hydroxyl group of 1 (Patent Document 3), and the like are disclosed. Furthermore, a method of stabilizing with a specific range of HLB nonionic surfactant and sodium salt of organic acid (Patent Document 4) is also disclosed. However, the problem has not been solved sufficiently, and a solution is desired.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 63-243014 [Patent Document 2]
JP-A-5-339123 [Patent Document 3]
Japanese Patent Laid-Open No. 5-331020 [Patent Document 4]
Japanese Patent Laid-Open No. 7-277940
SUMMARY OF THE INVENTION An object of the present invention is to prevent precipitation of L-ascorbic acid phosphate ester and to have excellent daily stability in cosmetics containing L-ascorbic acid phosphate magnesium salt. Provide cosmetics.
[0005]
Means for Solving the Problems As a result of intensive investigations to achieve the above-mentioned problems, the present inventors have found that cosmetics containing L-ascorbic acid phosphate magnesium salt can be formulated with potassium citrate. The inventors have found that the precipitation of L-ascorbic acid phosphate magnesium salt over time has been prevented, and the present invention has been completed. Furthermore, it was discovered that the stickiness of the base can be alleviated within a specific blend ratio.
That is, the present invention provides a cosmetic which contains L-ascorbic acid phosphate magnesium salt and potassium citrate, prevents precipitation of L-ascorbic acid phosphate magnesium salt, and can further improve stickiness. Is.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION L-ascorbic acid phosphate magnesium salt used in the present invention is widely used as a whitening agent and acne scar improving agent, and can be obtained commercially, and its blending amount is particularly Although it does not limit, it is 0.1 to 10 weight% based on the whole composition, Preferably it is 3 to 8 weight%, Especially 3 to 6 weight% is preferable.
The blending amount of potassium citrate used in the present invention is not particularly limited, but the blending ratio of L-ascorbic acid magnesium phosphate and potassium citrate is preferably in the range of 1/1 to 2/1. This is because if the ratio is 1/1 or more, stickiness may not be improved, and if it is 2/1 or less, the stability may be insufficient.
The dosage form of the cosmetics of the present invention is not particularly limited, but can be used for, for example, skin lotions, cosmetic liquids, emulsions, creams, gels, and the like. Thickeners, surfactants, oils, preservatives, pigments, humectants, chelating agents, ultraviolet absorbers, medicinal agents, flavoring agents, and the like can be appropriately blended.
[0010]
EXAMPLES The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples. Moreover, [%] in the examples indicates [% by weight]. Examples 1 to 7 and Comparative Examples 1 to 5 shown in Table 1 were produced by a conventional method and evaluated. The evaluation method is shown.
(Evaluation Method 1) Examples (and Comparative Examples) prepared with stability over time were taken in a transparent glass bottle, allowed to stand at room temperature, 40 ° C. and 3 months, and then observed for precipitation. evaluated.
<Criteria>
-: No precipitation is observed.
±: Precipitation is observed.
+: Remarkable precipitation is observed.
Table 1 shows the results. From Table 1, it was recognized that precipitation of the L-ascorbic acid phosphate magnesium salt was suppressed in the Examples after 3 months at room temperature and 40 ° C. as compared with Comparative Examples.
[0012]
(Evaluation Method 2) An actual use test was conducted by 10 sticky feeling professional evaluation panels. The “non-stickiness” when the obtained cosmetic was applied to the skin was evaluated in five levels according to the following criteria, and further judged from the average score.
[Evaluation]
5 points: Very good.
4 points: Good.
3 points: Normal.
2 points: Somewhat bad.
1 point: Very bad.
[Evaluation]
◎: Average point 4.5 points or more ○: Average point 3.5 points or more and less than 4.5 points △: Average point 2.5 points or more and less than 3.5 points ×: Average point less than 2.5 points
[Table 1]
Figure 2005041808
[0014]
Example 8 Lotion
Figure 2005041808
(1) to (8) were mixed and dissolved uniformly to obtain a skin lotion.
[0015]
Example 9 serum
Figure 2005041808
(1) to (8) were mixed and dissolved uniformly to obtain a skin lotion.
[0016]
Example 10 Latex
Figure 2005041808
A (1) to (5) are mixed and dissolved uniformly.
B (6) to (9) are mixed and dissolved uniformly.
Add A to CB and mix and dissolve uniformly to obtain an emulsion.
[0017]
Example 11 Cream
Figure 2005041808
A (1) to (7) are heated and dissolved at 75 ° C.
B (8) to (13) are heated and dissolved at 75 ° C.
B is added to CA and emulsified.
Cool the DC to 35 ° C. to obtain a cream.
In all of Examples 8 to 11, precipitation of L-ascorbic acid phosphate magnesium salt was not observed even after 3 months at room temperature and 40 ° C.
[0018]
According to the present invention, when potassium citrate is blended in a cosmetic containing L-ascorbic acid phosphate magnesium salt, precipitation of L-ascorbic acid phosphate magnesium salt is remarkably prevented. -There is also an effect that stickiness is not worrisome when the blending ratio of ascorbic acid phosphate magnesium salt and potassium citrate is in the range of 1/1 to 2/1.

Claims (5)

L−アスコルビン酸リン酸エステルマグネシウム塩およびクエン酸カリウムを含有することを特徴とする化粧料。A cosmetic comprising L-ascorbic acid phosphate magnesium salt and potassium citrate. L−アスコルビン酸リン酸エステルマグネシウム塩とクエン酸カリウムの配合比が1/1〜2/1の範囲内である請求項1の化粧料。The cosmetic according to claim 1, wherein the blending ratio of L-ascorbic acid phosphate magnesium salt and potassium citrate is within a range of 1/1 to 2/1. L−アスコルビン酸リン酸エステルマグネシウム塩の含有量が1〜10重量%である請求項1または請求項2に記載の化粧料。The cosmetic according to claim 1 or 2, wherein the content of L-ascorbic acid phosphate magnesium salt is 1 to 10% by weight. L−アスコルビン酸リン酸エステルマグネシウム塩の含有量が3〜8重量%である請求項1乃至請求項3に記載の化粧料。The cosmetic according to any one of claims 1 to 3, wherein the content of L-ascorbic acid phosphate magnesium salt is 3 to 8% by weight. L−アスコルビン酸リン酸エステルマグネシウム塩の含有量が3〜6重量%である請求項1乃至請求項4に記載の化粧料。The cosmetic according to any one of claims 1 to 4, wherein the content of L-ascorbic acid phosphate magnesium salt is 3 to 6% by weight.
JP2003202342A 2003-07-28 2003-07-28 Cosmetic Pending JP2005041808A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007055943A (en) * 2005-08-25 2007-03-08 Kyoei Kagaku Kogyo Kk Ascorbic acid 2-phosphate magnesium composition and cosmetic containing the same
JP2018162233A (en) * 2017-03-27 2018-10-18 株式会社シーボン Cosmetic

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007055943A (en) * 2005-08-25 2007-03-08 Kyoei Kagaku Kogyo Kk Ascorbic acid 2-phosphate magnesium composition and cosmetic containing the same
JP2018162233A (en) * 2017-03-27 2018-10-18 株式会社シーボン Cosmetic

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