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Method for evaluating cosmetic effects of cosmetic product on skin

A technology for beauty products and skin, applied in the fields of application, spectrum generation, spectrum generation using refraction elements, etc., can solve problems such as research on hyperspectral imaging methods

Active Publication Date: 2016-02-10
LOREAL SA
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, hyperspectral imaging methods have not been investigated in the cosmetic field so far

Method used

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  • Method for evaluating cosmetic effects of cosmetic product on skin
  • Method for evaluating cosmetic effects of cosmetic product on skin
  • Method for evaluating cosmetic effects of cosmetic product on skin

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Embodiment Construction

[0071] After intensive research, the present inventors found that it is possible to provide a method for evaluating the cosmetic effects of cosmetic products on the skin with high precision and accuracy, and it is possible to provide new indicators directly linked to customer perception.

[0072] The method according to the present invention can provide accurate analysis results by considering spectral angle and spectral length in relation to skin tone, so that accurate information on the uniformity of skin color and the effect of whitening cosmetic products can be obtained. This approach can achieve an increase in data quality such that consumer perception can be precisely understood due to parameters derived from spectral angle and spectral length.

[0073] Furthermore, the method according to the invention has the advantageous effect that the devices used in the method according to the invention provide fast data acquisition times, lower data-fluctuations during this time co...

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Abstract

The present invention relates to a method for evaluating the cosmetic effects of a cosmetic product on the skin by determining multi-dimensional vectors from the diffuse reflection spectrum at the surfaces of the reference and the object skin before and after the application, and comparing any indices of relative spectral lengths of the object skin, spectral angles and an entropy after the application of the cosmetic product to the indices before the application of the cosmetic product. The method according to the present invention can evaluate the cosmetic effects of a cosmetic product on the skin with high precision and accuracy, and provide new indices directly linked to customer perception.

Description

technical field [0001] The present invention relates to a method for evaluating the cosmetic effect of a cosmetic product on the skin. Background technique [0002] Recently, several methods for measuring the cosmetic effect of cosmetic products have been developed. For example, JP-A-2007-307084 discloses a method for evaluating a whitening effect by measuring an increase in whitening degree of skin color due to skin color change caused by enhanced blood circulation. In this method, the whitening effect is determined by the increase rate of the average hemoglobin content. [0003] JP-A-2008-245666 discloses a method for evaluating skin pigmentation including a step of obtaining a color image of a color chart for adjusting white balance by using a video camera. The method is based on providing RGB information for color images and conventional color parameters that do not teach the uniformity of pigmentation and skin color. [0004] However, consumer perception is very comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/00G01N21/25
CPCA61B5/0077A61B5/441G01J3/0208G01J3/14G01J3/2803G01J3/2823G01N21/31G01N21/474
Inventor 户塚广乃金银淑D.巴蒂塞C.哈德朱宗田孝之永冈隆
Owner LOREAL SA
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