BPO Wash Emulsion Stability and Foaming via Mild Surfactants
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Solution Overview
Problem
Current benzoyl peroxide (BPO) wash compositions for acne treatment face challenges with instability, irritation, and poor foaming properties due to incompatibility with surfactants, leading to adverse events like dry skin and reduced effectiveness.
Innovation Solution
A topical wash composition incorporating benzoyl peroxide (BPO) with specific mild surfactants, Zinc gluconate, Dipotassium glycyrrhizate, and non-ionic emulsifiers, such as sugar ester derivatives and polyglycerol esters, to create a stable and non-irritating emulsion-based wash with improved foaming properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If benzoyl peroxide is formulated with conventional surfactants to create wash composition, then cleansing and foaming properties are improved, but chemical stability of BPO deteriorates due to incompatibility reactions
Solution Approach 1:
The patent changes the chemical parameters of the surfactant system by selecting specific mild surfactants (amphoteric surfactants like cocamidopropyl hydroxysultaine, or non-ionic surfactants like decyl glucoside) that are compatible with BPO. This parameter change resolves the contradiction by finding surfactant types that provide adequate cleansing and foaming while maintaining BPO stability during storage.
Solution Approach 2:
The patent introduces compatible surfactants as intermediary substances that mediate between the need for cleansing/foaming and the need for BPO stability. These surfactants act as compatible intermediaries that do not trigger decomposition reactions with BPO, unlike conventional surfactants.
2Reliability
If high concentration of BPO is used to improve acne treatment effectiveness, then therapeutic effect is improved, but skin irritation and adverse events worsen
Solution Approach 1:
The patent optimizes the BPO concentration parameter to a specific range (2-10%) that balances therapeutic effectiveness with skin tolerance. This parameter optimization resolves the contradiction by identifying the optimal concentration window where BPO remains effective for acne treatment while minimizing irritant effects.
Solution Approach 2:
The patent creates a composite formulation combining BPO with mild compatible surfactants and other skin-friendly ingredients. This composite approach allows the use of effective BPO concentrations while the compatible surfactant system mitigates skin irritation and improves overall tolerability.
3Object-affected harmful factors
If emulsion-based wash is formulated to improve skin tolerance and reduce dryness, then skin compatibility is improved, but foaming properties worsen compared to conventional washes
Solution Approach 1:
The patent develops a composite emulsion formulation that combines emollient ingredients with mild surfactants capable of producing acceptable foam. This composite material approach resolves the contradiction by creating a formulation that leverages the skin-protective properties of emulsions while incorporating surfactant components that maintain adequate foaming performance.
Solution Approach 2:
The patent selects mild surfactants that perform multiple functions: they provide foaming and cleansing properties while also being compatible with BPO and contributing to skin tolerance. This multi-functionality resolves the contradiction by having the surfactant system simultaneously address foaming requirements and skin compatibility.
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 achieves chemical and physical stability of BPO, reduces skin irritation, and maintains effective foaming properties, enhancing patient compliance and treatment outcomes for acne.
Implementation Method 1
The effectiveness of the BPO is linked to its decomposition when it is brought into contact with the skin. It is the oxidizing properties of the free radicals produced during this decomposition which produces the desired effect.
Implementation Method 2
It is the oxidizing properties of the free radicals produced during this decomposition which produces the desired effect.
Implementation Method 3
BPO is a chemical compound that is unstable and that reacts with a large array of raw materials especially surfactants and oils. This inherent instability makes BPO difficult to formulate in finished products, especially wash compositions that contain surfactants for the benefit of their cleansing and foaming properties.
Data Source
AI summary
A topical dermatological/pharmaceutical composition is described that includes BPO wherein the composition is a wash composition with desirable tolerance, stability and foaming properties. The composition can include: a) benzoyl peroxide (BPO); b) at least one anionic and/or non-ionic surfactant, selected from zinc coceth sulfate; sodium cocoyl isethionate, sodium lauroyl isethionate, C14-C16 α-olefinsulfonates, preferably its sodium salt and decyl glucoside; c) zinc gluconate; d) dipotassium glycyrrhizate; e) an oily phase; f) an aqueous phase; and g) at least one non-ionic emulsifier from the family of sugar ester derivatives, and/or polyglycerol esters and/or gemini surfactants. The composition is preferably in the form of an oil in water emulsion. Also described, is the use of such composition for the treatment of dermatological disorders, and in particular in the treatment of acne.