Chemical Peel Composition Stabilization Using Saturated Non-Ionic Emulsifiers
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Solution Overview
Problem
Existing deep chemical peels, such as those using phenol, croton oil, and Septisol®, suffer from rapid phase separation, leading to uneven application and increased irritancy due to the need for constant agitation, which can result in inconsistent treatment outcomes and safety risks.
Innovation Solution
Incorporating a saturated non-ionic ethoxylated fatty acid ester, like PEG-80 sorbitan laurate, as an alternative emulsifier to stabilize the composition, maintaining homogeneity for extended periods and preventing phase separation, thereby ensuring uniform application and reduced irritancy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional emulsifiers like Septisol are used in deep chemical peels, then the composition can be formulated with phenol and croton oil, but rapid phase separation occurs leading to uneven application and increased irritancy
Solution Approach 1:
The patent changes the chemical parameters of the emulsifier by selecting saturated non-ionic ethoxylated fatty acid esters with specific molecular structures (ethylene oxide chains of 2-20 units). This parameter change in the emulsifier's chemical composition fundamentally alters the composition's stability profile, preventing phase separation and reducing skin irritancy without sacrificing the active ingredients' efficacy.
Solution Approach 2:
The saturated non-ionic ethoxylated fatty acid ester acts as an intermediary substance between the hydrophilic phenol and the hydrophobic croton oil. This mediator creates a stable emulsion system where the emulsifier molecules position themselves at the interface between phases, with their hydrophilic ethoxylated heads facing the aqueous phase and hydrophobic tails facing the oil phase, thereby preventing phase separation and reducing the need for agitation.
2Stability of the object's composition
If constant agitation is applied to maintain homogeneity of chemical peel composition, then phase separation is prevented, but application consistency deteriorates and safety risks increase
Solution Approach 1:
The stabilized composition exhibits self-maintaining homogeneity properties. The saturated non-ionic ethoxylated fatty acid ester creates a thermodynamically stable emulsion that resists phase separation under normal storage and application conditions. The composition essentially serves itself by maintaining homogeneity without external agitation, allowing practitioners to apply the peel consistently without the need for continuous mixing or stirring.
3Ease of manufacture
If traditional emulsifiers are used in chemical peels, then the formulation can proceed, but phase separation leads to uneven treatment outcomes
Solution Approach 1:
The patent modifies the formulation parameters by specifying saturated non-ionic ethoxylated fatty acid esters with particular chain lengths and ethylene oxide unit counts (2-20 units). These precise parameter specifications ensure that the emulsifier provides adequate stabilization while maintaining the ability to formulate with traditional active ingredients like phenol and croton oil, achieving both manufacturing feasibility and treatment uniformity.
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 use of saturated non-ionic ethoxylated fatty acid esters in chemical peels and skin cleansers provides enhanced stability and homogeneity, resulting in more predictable and consistent treatment outcomes, reducing the need for constant agitation and minimizing the risk of uneven application and adverse reactions.
Implementation Method 1
Incorporating a saturated non-ionic ethoxylated fatty acid ester, like PEG-80 sorbitan laurate, as an alternative emulsifier to stabilize the composition, maintaining homogeneity for extended periods and preventing phase separation
Data Source
AI summary
A composition is provided, wherein the composition includes an aqueous solvent, phenol, croton oil, and at least one saturated non-ionic ethoxylated fatty acid ester, and wherein the composition has a rate of separation of less than or equal to 0.5 mm/s. Another composition is also provided, wherein the composition includes an aqueous solvent, benzyl alcohol, ethylhexylglycerin, and at least one saturated non-ionic ethoxylated fatty acid ester. The compositions may be incorporated in to methods for treating skin conditions and cleansing skin, respectively.