Composite UV Filter Stabilizing Cosmetic Actives
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Solution Overview
Problem
Cosmetic and pharmaceutical formulations are prone to degradation due to light, heat, and oxidation, particularly affecting active compounds like dyes, antioxidants, and vitamins, which are not adequately protected by existing UV filters.
Innovation Solution
A composition comprising butyl-methoxy-dibenzoylmethane, ethyl-hexyl-salicylate, and benzo triazolyl dodecyl p-cresol, which acts as a broad-spectrum UV filter and photostabilizer, effectively stabilizing these compounds against UV radiation, heat, and oxidation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional UV filters (benzophenone family, cinnamate, dibenzoylmethane, salicylate) are used to protect against UV radiation, then UV protection is provided, but the formulations still experience degradation of active compounds due to insufficient broad-spectrum protection and endocrine disruption concerns
Solution Approach 1:
The patent employs a composite UV filter system combining three specific compounds: butyl-methoxy-dibenzoylmethane (Compound A), ethyl-hexyl-salicylate (Compound B), and benzo triazolyl dodecyl p-cresol (Compound C). This composite approach provides broad-spectrum UV protection across UV-A, UV-B, and UV-C ranges while enhancing stability of active compounds through synergistic effects. The combination resolves the contradiction by achieving superior protection effectiveness without compromising the stability of cosmetic actives.
Solution Approach 2:
The stabilizing composition performs multiple functions simultaneously: it acts as a broad-spectrum UV filter, a photostabilizer for colorants, and an antioxidant protecting various active compounds (vitamins, fragrance molecules, colorants) from degradation. This multi-functionality allows a single composition to address multiple degradation pathways, improving protection effectiveness while preventing active compound degradation.
2Device complexity
If a single UV filter is used in a formulation, then the formulation remains simple, but sufficient effective protection of color and other actives against UV rays is not guaranteed
Solution Approach 1:
The patent employs a composite UV filter system combining three specific compounds: butyl-methoxy-dibenzoylmethane (Compound A), ethyl-hexyl-salicylate (Compound B), and benzo triazolyl dodecyl p-cresol (Compound C). This composite approach provides broad-spectrum UV protection across UV-A, UV-B, and UV-C ranges while enhancing stability of active compounds through synergistic effects. The combination resolves the contradiction by achieving superior protection effectiveness without compromising the stability of cosmetic actives.
Solution Approach 2:
The UV protection function is segmented into three specialized components, each targeting specific UV ranges and providing distinct protective mechanisms: Compound A for UV-A, Compound B for UV-B, and Compound C for broad-spectrum including UV-C. This segmentation allows each compound to optimize its specific function while the combination achieves comprehensive protection, improving reliability without excessive complexity.
3Object-affected harmful factors
If existing UV filters are used to protect against light, then UV protection is provided, but heat and oxidation degradation of active compounds is not adequately addressed
Solution Approach 1:
The stabilizing composition performs multiple functions simultaneously: it acts as a broad-spectrum UV filter, a photostabilizer for colorants, and an antioxidant protecting various active compounds (vitamins, fragrance molecules, colorants) from degradation. This multi-functionality allows a single composition to address multiple degradation pathways, improving protection effectiveness while preventing active compound degradation.
Solution Approach 2:
The patent employs a composite UV filter system combining three specific compounds: butyl-methoxy-dibenzoylmethane (Compound A), ethyl-hexyl-salicylate (Compound B), and benzo triazolyl dodecyl p-cresol (Compound C). This composite approach provides broad-spectrum UV protection across UV-A, UV-B, and UV-C ranges while enhancing stability of active compounds through synergistic effects. The combination resolves the contradiction by achieving superior protection effectiveness without compromising the stability of cosmetic actives.
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 composition significantly reduces the degradation of active compounds in formulations, maintaining their color and efficacy over time, even under exposure to light and heat, without causing crystallization or color changes.
Implementation Method 1
Compound A is useful as an ultraviolet filter against UV-A radiation
Implementation Method 2
Compound B is useful as an ultraviolet filter against UV-B radiation
Implementation Method 3
Compound C is a photostabilizing agent that filters ultraviolet radiation over a broad wavelength band from 200 to 370 nanometers
Implementation Method 4
The composition significantly reduces the degradation of active compounds in formulations, maintaining their color and efficacy over time, even under exposure to light and heat
Data Source
AI summary
The invention relates to a composition comprising: (A) a compound A of the following formula (I), (B) a compound B of the following formula (II), and (C) a compound C, the compound C being benzotriazolyl dodecyl p-cresol, to a formulation, in particular a cosmetic, dermocosmetic or pharmaceutical formulation, comprising same, and to the uses of the composition for slowing down degradation caused by light and/or heat and/or the oxidation of at least one active compound chosen from dyes, odorous molecules, vitamins, antioxidants and mixtures thereof.