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External use composition

A technology for external use composition and characteristics, applied in the field of external use composition, can solve problems such as inability to reduce sticky feeling, poor skin feeling and the like

Active Publication Date: 2005-05-18
SHISEIDO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the disadvantages of the above-mentioned external preparations for skin are that it is okay when no oily ingredients are added, but once oily ingredients are added, the stickiness cannot be reduced, and the skin feeling after use becomes worse.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0031] Examples 1-4, Comparative Examples 1-3

[0032] First, before disclosing each formulation example, the evaluation method adopted for the composition for external use of the present invention will be described.

[0033] The external composition as recorded in Table 1 prepared by the following method was used by 20 special test judges and the results were tested. The non-sticky feeling when applied, the tender feeling when applied, and the non-sticky feeling after use , Refreshing feeling after use, judged by the following evaluation criteria. The results are shown in Table 1.

[0034] (judging criteria)

[0035] ◎: Very good (more than 16 out of 20 people expressed good results for the judging items)

[0036] ○: Good (11-15 out of 20 people expressed good effects on the evaluation items)

[0037] △: Poor (6 to 10 out of 20 people expressed good effects on the judging items)

[0038] ×: Poor (less than 5 out of 20 people expressed good effect on the judging items) ...

Embodiment 1～3

[0041] After mixing and dissolving the ingredients of phase A (gelation part) at 85°C, and then cooling to room temperature, it was gelled (solidified). The obtained gel is thoroughly pulverized by a homomixer and then mixed with the pre-prepared B phase (emulsified part) to obtain a cosmetic product with whitening effect.

Embodiment 5

[0052] (Example 5) emulsion

[0053] Deployment ingredients Deployment amount (mass%)

[0054] A. Gel part

[0055] (1) Dipropylene glycol 5.0

[0056] (2) Glycerin 1.0

[0057] (3) Betaine 1.0

[0058] (4) Gellan gum 0.3

[0059] (5) L-Ascorbic acid 2-glucoside 2.0

[0060] (6) Methylparaben (preservative) 0.2

[0061] (7) Edetate (chelating agent) 0.1

[0062] (8) Potassium hydroxide 0.38

[0063] (9) Citric acid (buffer) 0.02

[0064] (10) Sodium citrate (buffer) 0.18

[0065] (11) Purified water 50.0

[0066] B. Emulsification part

[0067] (12) Alkyl modified carboxyvinyl polymer (PEMULEN TR-2) 0.1

[0068] (13)Squalane 1.0

[0069] (14) Cetyl 2-ethylhexanoate 2.0

[0070] (15) Decamethylcyclopentasiloxane 1.0

[0071] (16) Purified water balance

[0072] [Preparation]

[0073] Add humectants, gellan gum, preservatives and chelating agents to partially purified water and heat to 85°C, then add ascorbic acid derivatives, potassium hydroxide and buffers tha...

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PUM

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Abstract

Provided is an external composition, which can eliminate the sticky feeling peculiar to salt medicines while adding L-ascorbic acid or its derivatives, and has a supple and refreshing skin feeling when used. The present invention comprises (a) thickening polysaccharides selected from any one or two or more substances selected from gellan gum, alginic acid, pectin, and carrageenan, (b) L-ascorbic acid or its derivatives , (c) alkyl-modified carboxyvinyl polymer and (d) oil components are blended together to achieve.

Description

technical field [0001] The present invention relates to compositions for external use having excellent usability. More specifically, it relates to a composition for external use that adds L-ascorbic acid or its derivatives while having less of the sticky feeling unique to salt pharmaceutical preparations, and has a moist and refreshing feeling when used. Background technique [0002] Important factors for judging the quality of external skin products and cosmetic products (hereinafter collectively referred to as "compositions for external use") include the actual effect on the skin and the skin feel when used. As we all know, L-ascorbic acid and its derivatives can achieve a good whitening effect when they penetrate into the skin, but the disadvantage is that because they are salt agents, if they are added to external compositions, they will feel sticky when used , making the skin feel worse during use. Moisturizers and thickeners are added to many external compositions, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K47/44
Inventor 樋渡幸三
Owner SHISEIDO CO LTD
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