External preparation for skin

A technology for external preparations and skin, which is applied in the field of improving external preparations for skin, and can solve problems such as increased costs and complicated procedures

Inactive Publication Date: 2008-04-23
SHISEIDO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] However, the above-mentioned technique requires a pulverization process for preparation of microgels, so there are problems in that the process is complicated and the cost increases.
Moreover, due to the lack of stability such as dehydration (water separation), it needs to be used in combination with other tackifiers

Method used

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  • External preparation for skin

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Embodiment

[0062] Hereinafter, the present invention will be described in more detail with reference to specific examples, but the present invention is not limited thereto. Unless otherwise specified, the blending amount is % by mass.

[0063] (1) Xanthan Gum / Guaiac Gum / Salt Type Medicinal Mixing System

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Abstract

The invention provides an external preparation for skin capable of providing sufficient viscosity by a simple operation and excellent in feelings upon use in a salt type agent formulation system. The external preparation for skin is obtained by formulating a salt type agent with xanthan gum and guar gum. It is preferable for the external preparation that the weight ratio of the xanthan gum to the guar gum is (10:90) to (90:10), further (20:80) to (80:20). The external preparation for skin is excellent in viscosity stability at high temperature when the weight ratio is particularly (50:50) to (20:80). The salt type agent is preferably an ascorbic acid-based and / or alkoxysalicylic acid-based bleaching agent.

Description

[0001] This application is a divisional application of the Chinese application of the parent application 200410086936.7 (application date is October 20, 2004) and the invention title is "external skin preparation". technical field [0002] The invention relates to an external preparation for improving skin, in particular to improving the viscosification, use feeling, high-temperature stability and the like of a salt-type medicament mixing system. Background technique [0003] In the field of external preparations for skin, thickeners are commonly used in order to improve usability, stability, and the like. For example, carboxyvinyl polymers have high viscosity-increasing properties, are tender when applied to the skin, are easy to disperse, are not sticky, and have a good sense of use, so they are widely used in the viscosity-increasing aspect of the base of skin care preparations. [0004] However, it is well known that carboxyvinyl polymers have low salt resistance, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K47/36A61K47/22A61K47/12A61K47/02A61K8/73A61K8/67A61K8/365A61P17/00A61Q19/00A61K8/30A61K8/00A61K8/19A61K8/20A61K8/33A61K8/96
Inventor 佐仓彻中村忠司
Owner SHISEIDO CO LTD
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