Inverse Opal Cosmetics for Radiance Without Grey Tones
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Solution Overview
Problem
Existing cosmetic compositions fail to provide effective skin enlightenment without causing opacity, grayish tones, or dulling, especially on darker skin tones, and lack immediate and persistent color modulation.
Innovation Solution
Development of three-dimensionally ordered macroporous inorganic structures with spherical pores coated by a hydrophobic component, which maintain reflectance and color intensity in hydrophilic environments, used in cosmetic compositions to enhance skin radiance and uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If inverse opals are used in cosmetic compositions to provide optical enlightenment, then skin radiance is improved, but color intensity and saturation decrease dramatically causing brownish or greyish shades
Solution Approach 1:
The patent applies parameter changes by modifying the refractive index of the inverse opal structure through compositional adjustments. By controlling the inorganic material composition (e.g., silica content, metal oxide additives) and pore size distribution, the optical properties are tuned to maintain high color saturation and intensity while providing skin enlightenment effect, thus resolving the contradiction between radiance and color intensity.
2Illumination intensity
If white diffusing pigments are used to provide immediate skin enlightenment, then skin opacity and covering power are improved, but natural appearance and transparency are lost creating greyish color effect
Solution Approach 1:
The patent applies local quality by creating a hierarchical pore structure within the inverse opal where different regions have different functions. The outer surface maintains optical clarity for natural appearance, while internal pore structures provide light scattering for enlightenment effect. This localized functional differentiation allows simultaneous achievement of skin brightness and natural transparency without greyish tones.
Solution Approach 2:
The patent uses composite materials by combining inorganic frameworks (silica, metal oxides) with organic templates and hydrophobic coatings. This composite structure provides both the optical scattering needed for enlightenment and the surface properties needed for natural appearance, resolving the contradiction between covering power and natural transparency.
3Ease of manufacture
If bleaching agents are used to lighten skin by modifying melanocyte activity, then pigmentation is reduced, but the effect appears only slowly requiring several days of prolonged use
Solution Approach 1:
The patent replaces the biological mechanism (chemical modification of melanocytes) with a physical mechanism (optical reflection and scattering from inverse opal structures). This substitution provides immediate visual enlightenment effect without requiring prolonged biological action, thus resolving the time delay contradiction while maintaining pigmentation reduction capability.
4Ease of manufacture
If bleaching agents such as hydroquinone are used to lighten skin, then pigmentation is reduced, but cytotoxicity and skin irritation occur
Solution Approach 1:
The patent converts the harmful chemical action of bleaching agents into a beneficial physical optical effect. Instead of using cytotoxic chemicals to reduce pigmentation, the inverse opal structures provide optical enlightenment through light scattering and reflection. This transforms a harmful chemical process into a safe physical process, eliminating cytotoxicity and skin irritation while maintaining the pigmentation reduction effect.
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
The solution provides intense, immediate, and persistent skin enlightenment with natural appearance, reducing pigmentation defects and maintaining color vibrancy across various skin tones without opacification.
Implementation Method 1
Ordered Macroporous inorganic structures providing particular reflectance properties are known. They are generally known as inverse opals.
Implementation Method 2
the surface of said pores being coated by an absorber agent of the visible wavelength spectrum, said particles being coated with at least one hydrophobic component
Data Source
AI summary
The present invention relates to an inorganic material comprising particles of three-dimensional ordered macroporous structure comprising spherical pores,said pores having an average pore diameter ranging from 50 nm to 10 μm,the pore diameter varying by no greater than 20%,the surface of said pores being coated by an absorber agent of the visible wavelength spectrum,said particles having an average largest dimension ranging from 1 to 50 μm, and whereinsaid particles are coated with at least a hydrophobic component.The invention further relates to a process for preparing said inorganic material.