Skin Glow Improver Polarized Reflectance Evaluation
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Solution Overview
Problem
There is no method available for objectively evaluating skin glow, and existing methods for improving skin glow are ineffective in enhancing specular reflectance, which is a key component of skin glow.
Innovation Solution
A method involving the measurement of polarized reflectance to determine diffuse and specular reflectance, combined with the application of a skin glow improver containing an alkaline metal salt of alkoxysalicylic acid and trimethylglycine to reduce surface roughness of horny layer cells, thereby enhancing specular reflectance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensory evaluation by beauty technician is used to assess skin translucency, then evaluation can be conducted, but evaluation accuracy is low and variations between evaluations cannot be completely eliminated
Solution Approach 1:
The patent replaces the mechanical sensory evaluation system (beauty technician visual assessment) with an optical measurement system using polarized light. The system irradiates polarized light to the skin surface and measures reflected light components to objectively determine translucency, eliminating human subjectivity and achieving consistent, quantifiable results through optical physics rather than human sensation.
2Measurement precision
If conventional skin whitening preparations are used, then skin whitening effect is achieved, but skin glow (specular reflectance) is not improved
Solution Approach 1:
The patent segments the skin appearance evaluation into two distinct components: translucency (diffuse reflectance) and glow (specular reflectance). By separating these properties and developing specific measurement methods and formulations for each, the invention addresses the limitation of conventional preparations that only target whitening (translucency) while neglecting the glow component, enabling targeted improvement of both aspects.
3Measurement precision
If polarized light measurement method is used to evaluate skin glow, then objective evaluation is achieved, but measurement system complexity increases
Solution Approach 1:
The patent employs optical physics principles using polarized light to objectively measure skin glow properties. By utilizing the interaction between polarized light and skin surface/scatterers, the system quantifies specular and diffuse reflectance components separately, providing objective, repeatable measurements that replace subjective visual assessment while maintaining practical measurability through standard optical instrumentation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method allows for objective evaluation of skin glow and improves specular reflectance, enhancing the appearance of skin by increasing both diffuse and specular reflectance, thus addressing the limitations of existing methods.
Implementation Method 1
measuring a first reflectance by irradiating polarized light to the surface of skin followed by receiving reflected light polarized in a direction parallel to the direction of polarization of the irradiated polarized light, and measuring a second reflectance by applying the polarized light to the surface of the skin followed by receiving reflected light in a direction perpendicular to the direction of polarization
Implementation Method 2
measuring a first reflectance by irradiating polarized light to the surface of skin followed by receiving reflected light
Data Source
AI summary
Provided are an evaluation method for objectively evaluating the glow of the skin, a skin glow improver, and a method for examining skin glow improvers. This method for evaluating the glow of the skin comprises assessing the specular reflectance and diffuse reflectance of skin after polarized light is applied to the surface of the skin, and determining that glow is present in the skin when prescribed conditions are satisfied. A skin glow improver is provided by combining an alkali metal salt of alkoxysalicylic acid and trimethylglycine. This method for examining skin glow improvers makes it possible, using a significant decrease in surface roughness as an indicator, to examine samples capable of improving the specular reflectance of the skin.