Rinse-off Mousse with Gas-Generating Foam for Benzoyl Peroxide Stability
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Solution Overview
Problem
Current rinse-off topical cleaning products for acne treatment, particularly those containing benzoyl peroxide, face challenges due to instability, skin irritation, and compatibility issues with foaming surfactants, leading to suboptimal tolerance and effectiveness.
Innovation Solution
A self-foaming composition with minimal or no foaming surfactants, utilizing a combination of intermediate compositions containing a gas-generating agent and an acid/base reaction to create a stable, non-irritating foam for topical application, ensuring benzoyl peroxide stability and improved skin tolerance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If foaming surfactants are used to create foam in cleaning products, then the user perceives better cleaning effectiveness, but skin irritation increases and tolerance decreases
Solution Approach 1:
The invention extracts and removes foaming surfactants from the composition entirely, replacing them with a gas-generating system that creates foam through chemical reaction (acid + carbonate/bicarbonate → CO2 gas). This eliminates the harmful foaming agents while maintaining the beneficial foam structure for user perception of effectiveness.
Solution Approach 2:
The invention changes the fundamental mechanism of foam generation from surfactant-based physical foaming to chemistry-based gas generation. By transforming the foam creation mechanism from surface-active agent stabilization to in-situ gas production, the patent eliminates irritation while preserving foam volume and stability.
2Reliability
If benzoyl peroxide is included in topical formulations, then acne treatment effectiveness is improved, but stability and compatibility with other ingredients deteriorate
Solution Approach 1:
The invention extracts benzoyl peroxide from the formulation and replaces it with alternative active ingredients (salicylic acid, glycolic acid, lactic acid, or their combinations). This substitution maintains acne treatment effectiveness while eliminating BPO's instability and cross-reactivity issues with surfactants and other formulation ingredients.
Solution Approach 2:
The invention uses composite acid formulations (combining salicylic acid with glycolic acid, lactic acid, or both) to achieve synergistic acne treatment effects. This composite approach provides comparable or enhanced effectiveness without the stability problems of benzoyl peroxide.
3Quantity of substance
If a high content of foaming surfactants is used to generate volume and foam, then user expectation of effectiveness is met, but skin tolerance and mildness deteriorate
Solution Approach 1:
The invention removes foaming surfactants entirely from the formulation and replaces them with a gas-generating system using acids and carbonates/bicarbonates. This chemical foam generation produces sufficient foam volume to meet user expectations without the skin irritation caused by traditional surfactants.
Solution Approach 2:
The invention introduces gas-generating agents (carbonate or bicarbonate particles) as intermediaries that react with acids to produce CO2 gas in-situ. This mediator system creates foam volume without requiring harmful foaming surfactants, bridging the gap between user expectations and skin tolerance.
4Ease of operation
If conventional foaming formulations are used, then ease of application is improved, but compatibility with active principles and stability deteriorate
Solution Approach 1:
The invention extracts conventional foaming surfactant systems and replaces them with a gas-generating chemistry system. This new formulation approach maintains ease of application through foam delivery while achieving broad compatibility with various active ingredients (acids, enzymes, antioxidants) that are incompatible with traditional surfactants.
Solution Approach 2:
The invention fundamentally changes the formulation parameters by eliminating surfactants and using gas-generating chemistry instead. This parameter transformation enables compatibility with a wider range of active principles while maintaining the desirable foam-based application characteristics.
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 a stable, well-tolerated, and effective foam for acne treatment, avoiding the use of propellant gases and mechanical systems, while maintaining the therapeutic efficacy of benzoyl peroxide, thus enhancing user satisfaction and skin compatibility.
Implementation Method 1
the effectiveness of benzoyl peroxide is related to its decomposition when it is brought into contact with the skin
Implementation Method 2
it is the oxidizing properties of the free radicals produced during this decomposition which result in the desired effect
Implementation Method 3
utilizing a combination of intermediate compositions containing a gas-generating agent and an acid/base reaction to create a stable, non-irritating foam
Data Source
AI summary
A composition is described for a topical application, in the form of a rinse-off mousse, including no or only a small quantity of foaming surfactants. The composition can include a medium that is cosmetically or pharmaceutically compatible with a topical application, and benzoyl peroxide. The composition can also include at least one intermediate composition, at least one gas-generating agent, at least one agent activating the at least one gas-generating agent, and benzoyl peroxide. A kit or a single container with a plurality of compartments including this composition is also described.