Ascorbic Acid Composition Stability via Anhydrous Formulation
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Solution Overview
Problem
Current vitamin C compositions are unstable and have difficulty delivering pharmacologic doses percutaneously, leading to ineffective concentrations, rapid degradation, and limited shelf life, which complicates the treatment of skin conditions like striae gravidarum, radiation dermatitis, and other collagen-related issues.
Innovation Solution
A stable ascorbic acid composition is formulated with a hygroscopic compound like glycerin, potentially combined with silicone-based polymers and other additives, which maintains stability for extended periods and facilitates effective percutaneous absorption by preventing oxidation and degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vitamin C is formulated in conventional aqueous solutions, then it provides antioxidant and collagen synthesis benefits, but it rapidly oxidizes and degrades upon exposure to air, light, and heat, resulting in minimal shelf life and rapid loss of efficacy
Solution Approach 1:
The patent formulates vitamin C in anhydrous conditions using inert or low-water-activity bases such as fatty acids, esters, or waxes. This creates an inert environment that prevents oxidation by excluding water and oxygen, thereby maintaining stability and extending shelf life without requiring complex preservative systems
Solution Approach 2:
The patent changes the physical and chemical parameters of the formulation by using anhydrous vehicles instead of aqueous solutions. This parameter change from water-based to oil-based or waxy matrices fundamentally alters the oxidation kinetics, preventing the rapid degradation that occurs in conventional aqueous formulations
2Quantity of substance
If conventional topical vitamin C solutions are applied to deliver pharmacologic doses percutaneously, then they may achieve some absorption, but they suffer from low absorption rate over time and rapid degradation before penetration, limiting effective delivery to dermal fibroblasts
Solution Approach 1:
The patent uses anhydrous vehicles such as fatty acids, esters, or waxes as intermediaries to facilitate percutaneous absorption. These substances act as penetration enhancers that help deliver vitamin C through the stratum corneum while maintaining stability, thereby improving both absorption efficiency and effective dose delivery to target tissues
3Duration of action of stationary object
If stabilized topical vitamin C compositions are formulated using known methods, then they extend shelf life slightly, but they still begin to rapidly oxidize after about one month and require complex stabilization systems with multiple additives
Solution Approach 1:
The patent extracts water from the formulation system entirely, using anhydrous vehicles instead of aqueous solutions. This removal of water eliminates the primary medium for oxidation reactions, achieving stabilization without requiring complex systems of antioxidants, chelators, or pH buffers that characterize conventional stabilized formulations
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 remains stable for at least one month and up to a year, maintaining high ascorbic acid purity, and effectively stimulates collagen synthesis, addressing the limitations of existing formulations by providing a sustained and effective treatment for various skin conditions.
Implementation Method 1
As a strong electron donor or reducing agent, vitamin C sequentially donates two electrons from the double bond between carbons two and three. With the loss of these electrons, vitamin C is oxidized and another compound is reduced. Accordingly, vitamin C is commonly known as an antioxidant.
Implementation Method 2
Ascorbic acid has been found to be an essential cofactor in the hydroxylation of proline and lysine to form hydroxyproline and hydroxylysine, amino acids necessary for the function of collagen.
Data Source
AI summary
A formulation for a stable ascorbic acid composition which, in a simplified form, is comprised of ascorbic acid in solution with a hygroscopic compound (i.e., a substance with the ability to attract water molecules from the surrounding environment through either absorption or adsorption). Also disclosed herein are methods for the production of such compounds and methods of using such compounds in the prevention, inhibition and treatment of striae gravidarum, radiation dermatitis, rhytids, lentigoes, dyschromia, sun-damage induced hyperpigmentation, cellulite, scars and purpura, among other skin diseases or conditions.