Anhydrous Deodorant Composition for Stable High Powder Suspension
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Solution Overview
Problem
Natural deodorant compositions are unstable due to oil and wax structure separation, and structurant systems are not robust enough to support solid formulations with high powder suspensions, leading to unpleasant sensory experiences and potential skin irritation.
Innovation Solution
A personal care composition comprising a first mineral compound (clay mineral), a second mineral compound (oxide mineral), an inorganic salt, and a powdered hygroscopic material, along with plant-based oil or wax, in a specific ratio, forming a stable anhydrous solid product.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If natural deodorant compositions use oil and wax bases, then they provide pleasant sensory experience and are free of astringent metal salts, but they exhibit structure separation and lack stability
Solution Approach 1:
The patent introduces a complex structurant system comprising multiple components: a cationic polymer, an anionic polymer, a non-ionic polymer, and a metal salt. This intermediary system mediates between the oil/wax base and the mineral powders, preventing structure separation while maintaining stability. The complex interactst with both the hydrophobic oil/wax and the hydrophilic mineral surfaces, creating a stable emulsion that prevents phase separation.
Solution Approach 2:
The patent employs a composite structurant system combining multiple polymer types (cationic, anionic, non-ionic) with metal salts to create a robust network that stabilizes the oil/wax/mineral powder mixture. This composite approach creates synergistic effects where the combination of materials provides superior stability compared to single-component systems, preventing both oil/wax separation and mineral powder aggregation.
2Reliability
If the formulation uses high powder suspension, then it provides effective deodorancy, but the structurant system is not robust enough to support stability
Solution Approach 1:
The patent optimizes multiple parameters of the structurant system including the molecular weight distribution of polymers, the ratio of cationic to anionic components, the metal salt concentration, and processing conditions. By carefully controlling these parameters, the formulation achieves high powder suspension (40-70% by weight) while maintaining structural integrity at elevated temperatures through enhanced intermolecular interactions and a three-dimensional network structure.
Solution Approach 2:
The patent creates local quality variations within the formulation by ensuring uniform distribution of mineral powders throughout the oil/wax matrix through the structurant system. The complex provides localized stabilization at the interface between oil/wax and mineral particles, preventing aggregation while maintaining overall homogeneity. This local quality control enables high powder content without compromising stability.
3Reliability
If aluminum or zirconium salt is used as antiperspirant active, then it provides effective malodor protection, but it causes fabric discoloration and is perceived as harsh or irritating
Solution Approach 1:
The patent extracts and removes the harmful astringent metal salts (aluminum or zirconium) from the formulation while retaining the beneficial malodor protection function through alternative natural ingredients. The formulation replaces conventional astringent metals with mineral-based actives and natural compounds that provide deodorancy without the harmful effects of fabric discoloration and skin irritation.
Solution Approach 2:
The patent converts the potential harm of metal salt irritation into benefit by using naturally derived mineral compounds that provide similar protective functions without the harmful effects. The mineral powders and natural oils work synergistically to provide malodor protection while being gentler on skin and clothing, transforming a harmful formulation approach into a beneficial natural alternative.
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 provides enhanced stability, a pleasant sensory experience, and effective deodorancy without astringent metal salts, while maintaining structural integrity at elevated temperatures.
Implementation Method 1
a powdered hygroscopic material
Implementation Method 2
a first mineral compound that is a clay mineral; a second mineral compound that is an oxide mineral
Data Source
AI summary
Disclosed herein is a personal care composition. In particular, disclosed herein is an anhydrous personal care composition comprising a first mineral compound that is a clay mineral; a second mineral compound that is an oxide mineral; an inorganic salt; a powdered hygroscopic material; and an oil, wax, or mixture thereof. The disclosed personal care composition is especially useful as an efficacious, natural deodorant alternative that is unexpectedly stable, is free of astringent metal salts, and provides a pleasant consumer use experience upon topical application.