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liquid cosmetics
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A cosmetic and quality technology, applied in cosmetics, cosmetic preparations, cosmetic preparations, etc., can solve the problems of insufficient softness, poor stability, and lack of characteristics, and achieve a non-sticky and soft feeling of use. , the effect of maintaining stability
Active Publication Date: 2016-02-24
SHISEIDO CO LTD
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[0006] In the above-mentioned cosmetics described in Patent Documents 1 and 2, it was confirmed that long-term stability and vibration stability were improved by blending a predetermined amount of branched saturated fatty acid, especially isostearic acid, which is liquid at normal temperature, into the oil component. However, for example, Sometimes the stability is poor when frozen or at high temperature, and the softness of the usability is not enough
In addition, the skin external preparation described in Patent Document 3 has not been evaluated for stability when frozen or at high temperature, and softness in use feeling. In the case of the formulation (Comparative Example 5), the desired characteristics cannot be obtained, and the scope of the formulation is limited.
Method used
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Embodiment 1～11 and comparative example 1～8
[0049] Liquid cosmetics (lotions) were prepared according to the formulations shown in Tables 1 to 4 below, and their properties were evaluated in accordance with the following evaluation methods and evaluation criteria. These results are shown together in the table|surface.
[0050] [evaluation method of usability]
[0051] 10 professional judges actually used each sample of the Example and the comparative example, and evaluated usability (non-stickiness and tenderness). According to the following scoring standards, each panelist performed sensory evaluation in 5 stages, and judged from the total score according to the following evaluation standards.
[0052] [Grading]
[0053] 5 points: very good
[0054] 4 points: excellent
[0055] 3: normal
[0056] 2: Poor
[0057] 1: Very poor
[0058] [evaluation standard]
[0059] ◎: The total score is more than 40 points
[0060] ○: The total score is 30 to 39 points
[0061] △: The total score is 20 to 29 points
[0062] ...
Embodiment 12～13 and comparative example 9
[0083] Liquid cosmetics were prepared according to the formulations shown in Table 5 below in which a salt-type drug (4-methoxysalicylic acid potassium salt) was blended, and the same evaluation as above was performed. The results are recorded in Table 5 together.
[0084] [table 5]
[0085]
[0086] From the results shown in Table 5, it can be known that Examples 12 and 13, which are blended in such a way that isostearyl alcohol accounts for more than 60% by mass of the oil, can stably blend potassium 4-methoxysalicylate as a salt-type medicament, The soft feeling of use was also maintained; however, in Comparative Example 9, in which the compounded amount of isostearyl alcohol was less than the specified amount, the usability was deteriorated, and the stability during storage at high temperature was particularly reduced.
Embodiment 14
[0087] Example 14: Translucent lotion
[0088]
[0089]
[0090] Production method: Dissolve water-soluble components in water sequentially according to a conventional method to prepare an aqueous phase. The water insoluble ingredient is mixed with the amphiphilic ingredient and added to the aqueous phase.
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Abstract
Provided in particular is a transparent to semi-transparent liquid cosmetic material, wherein transparency (L value) is stably maintained and the liquid cosmetic material has a soft feeling of use with no stickiness even after being subjected to harsh conditions such as freezing or storage at high temperatures. Provided is a transparent to semi-transparent liquid cosmetic material which contains (a) 0.01 to 3 mass % of an oil component and (b) a hydrophilic surfactant selected from among a polyoxyethylene hardened castor oil and a polyoxyethylene phytosterol and which has an L value of 60 or higher, wherein isostearyl alcohol accounts for 60 mass % or more of the oil component (a). Furthermore, it is preferable to incorporate (c) a lipophilic surfactant selected from among polyglyceryl diisostearate, sorbitan sesquiisostearate and sorbitan sesquioleate in the cosmetic material.
Description
technical field [0001] The present invention relates to transparent to translucent liquid cosmetics. More specifically, it relates to a liquid cosmetic that has a non-sticky and soft feeling in use and is excellent in stability even under severe conditions such as freezing and high temperature. Background technique [0002] In recent years, cosmetics formulated by micronizing oils give the skin an excellent feel and exhibit high permeability to the skin, so they have the advantage of being able to widely realize the desired feeling of use and skin improvement effects. However, cosmetics having such a configuration have problems in terms of stability over time and ease of manufacture. [0003] Patent Document 1 discloses translucent to transparent liquid cosmetics in which oil is micronized, and it is described that by blending (a) 0.01 to 3% by weight of an oil that is liquid at room temperature and accounts for 1.0 to 80.0% by weight of branched chain saturated fatty acids...
Claims
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