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Whitening agent for topical application, and process for whitening skin

A technology of topical application and whitening agent, which is applied in the directions of skin care preparations, pharmaceutical formulations, cosmetic preparations, etc., can solve the problems of no public whitening cosmetics, etc., and achieve the effect of enhanced properties and high whitening effect.

Inactive Publication Date: 2015-11-11
LOREAL SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this patent document does not disclose whitening cosmetics

Method used

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  • Whitening agent for topical application, and process for whitening skin
  • Whitening agent for topical application, and process for whitening skin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 and comparative example 1

[0137] The topical formulations of Example 1 and Comparative Example 1 consisting of the components shown in Table 1 were prepared according to the following method.

[0138] [Table 1]

[0139] Table 1

[0140]

[0141]

[0142] PEG / PPG / polytetramethylene glycol-8 / 5 / 3 glycerin (polyoxybutylene polyoxyethylene polyoxypropylene glycerin): WILBRIDES-753 (NOF company)

[0143] (1) Ascorbyl glucoside was added to part of the water of phase B, and the mixture was stirred until the mixture was made homogeneous, and thus the ascorbyl glucoside was dissolved in the water.

[0144] (2) Sodium citrate and citric acid were dissolved in the remaining water, and then the solution was added to the aqueous solution of ascorbyl glucoside obtained in step (1). Subsequently, potassium hydroxide was added thereto, and then the mixture was stirred until the mixture was made uniform.

[0145] (3) Combine the components in Phase A, heat to 75°C, and stir until the mixture is homogeneous, th...

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Abstract

The invention provides a partially applied whitening agent such as whitening cosmetics, wherein skin permeability with fine whitening components is exhibited, a large number of or multiple kinds of whitening components can quickly permeate corneous layer, and high whitening effect can be exhibited. At least one oxyalkylene derivative represented by the following formula (I) is applied with combinations of water-soluble whitening components, wherein Z represents residues obtained from compounds having 3 to 9 hydroxide radicals by removing hydroxide radicals; AO represents oxyalkylene group having 3 to 4 carbon atoms; EO represents oxyethylene group; BO represents oxyalkylene group having 4 carbon atoms; a represents 3 to 9; l, m and n respectively represent the average addition mole number of AO, EO and BO, and l is greater than or equal to 1 and less than or equal to 50, m is greater than or equal to 1 and less than or equal to 50, and n is greater than or equal to 0.5 and less than or equal to 5; the weight ratio (AO / EO) of AO to EO is 1 / 5 to 5 / 1; and AO and EO can be added irregularly or added in blocking manner. [formula I] Z-{O(AO)1(EO)m-(BO)Nh}a (I).

Description

[0001] The application date of this application is June 22, 2009, the title of the invention is "topically applied whitening agent, skin penetration enhancer for water-soluble whitening active components, and method for whitening skin", and the application number is A divisional application of the invention patent application of 200910151352.6. [technical field] [0002] The present invention relates to topical whitening agents such as cosmetics, skin penetration enhancers for water-soluble whitening active ingredients, and methods for skin lightening, wherein the penetration of water-soluble whitening active ingredients into the skin is improved ability. [Background technique] [0003] WO2006 / 038724 describes an oxyalkylene derivative represented by the following formula (I) as a humectant having excellent texture and moisturizing properties and capable of retaining moisture even after the article is washed. [0004] [chemical formula 1] [0005] Z-{O(AO) l (EO) m -(BO)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61K8/86A61K8/67A61Q19/02
CPCA61Q19/02A61K8/18A61K8/39A61K8/67A61K8/86
Inventor 神保和子
Owner LOREAL SA
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