Microporous SPF Booster Composition for Safer High-Protection Sunscreen
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Solution Overview
Problem
Existing sunscreen formulations face challenges in reducing the quantity of UV filters while maintaining high sun protection efficacy, as high concentrations compromise aesthetics and pose safety and environmental risks, and traditional SPF boosters like silica and titanium oxide are toxic.
Innovation Solution
Incorporating microporous particles with a specific particle size distribution (PSD) as SPF boosters, characterized by a unique ratio of particle fractions, which act as physical mixtures with UV filters to enhance UVB and UVA protection without absorption or encapsulation, ensuring a safe and effective boost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high concentration of UV filters is used, then sun protection efficacy is improved, but safety and environmental risks increase
Solution Approach 1:
The patent introduces an intermediary substance (SPF booster) that mediates between the UV filter and the skin/environment. This booster enhances the protective effect without requiring high concentrations of potentially harmful UV filters, thus resolving the contradiction between efficacy and safety.
Solution Approach 2:
The patent creates a composite system combining UV filters with SPF boosters. This composite approach allows the UV filter to provide base protection while the booster enhances efficacy, enabling reduced UV filter concentration that maintains safety and environmental compatibility.
2Reliability
If high concentration of UV filters is used, then sun protection efficacy is improved, but cosmetic appeal deteriorates
Solution Approach 1:
The SPF booster acts as an intermediary that amplifies the protective effect, allowing reduced UV filter concentration. This reduction in filter concentration minimizes cosmetic defects such as white cast and greasiness, thereby maintaining aesthetic appeal while preserving efficacy.
Solution Approach 2:
The patent changes the concentration parameter of UV filters by using the SPF booster to enhance protection at lower concentrations. This parameter change maintains cosmetic appeal by reducing the amount of visible and aesthetically problematic UV filter material.
3Reliability
If traditional SPF boosters like silica and titanium oxide are used, then SPF boost effect is achieved, but toxicity to human and environment occurs
Solution Approach 1:
The patent employs organic SPF boosters that are biodegradable and environmentally friendly, replacing persistent inorganic boosters like silica and titanium oxide. These organic compounds provide the necessary SPF boost effect while decomposing naturally, eliminating long-term environmental toxicity.
Solution Approach 2:
The patent discards the use of toxic inorganic SPF boosters and recovers by using biodegradable organic alternatives. This substitution maintains the functional benefit (SPF boost) while eliminating the harmful toxicity associated with traditional inorganic boosters.
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 SPF boosters achieve a 20% increase in UVB protection and at least 10% increase in UVA protection, maintaining cosmetic appeal and safety, and are suitable for various cosmetic products.
Implementation Method 1
particles characterized by specific dimensions which overlap the range of the UV light (i.e. about 200-400 nm), in order to exploit the UV scattering mechanism
Implementation Method 2
The inorganic UV filters interact with UV light by two mechanisms: absorption and reflection/scattering
Data Source
AI summary
The present invention relates to a sunscreen formulation with SPF booster based on microporous particles having a specific particle size distribution (PSD).