10-Hydroxystearic Acid Cosmetic Composition for Skin Barrier and Anti-Aging
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Solution Overview
Problem
Current hydroxy fatty acids, such as those disclosed in EP1931329, face challenges in commercial production and formulation as effective anti-aging cosmetic ingredients due to limited cosmetic effects and difficulties in establishing soluble product forms for human skin application.
Innovation Solution
The use of 10-hydroxystearic acid, its salts, or esters, in combination with retinoids, as a topical composition for human skin to address anti-aging, skin tone homogeneity, pore size reduction, photo-protection, and skin barrier improvement, leveraging their multiple modes of action and ease of industrial-scale production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hydroxy fatty acids are used as cosmetic ingredients, then anti-aging effects are achieved, but limited cosmetic effect and formulation difficulties occur
Solution Approach 1:
The patent changes the chemical parameter by specifically selecting 10-hydroxystearic acid with its unique hydroxyl group position at carbon 10, which provides optimal balance between skin penetration, solubility, and cosmetic efficacy. This specific structural parameter resolution solves the formulation difficulties while maintaining reliable anti-aging effects
Solution Approach 2:
The patent creates composite cosmetic formulations by combining 10-hydroxystearic acid with retinoids and other cosmetic ingredients, leveraging synergistic effects to enhance anti-aging performance while improving overall formulation stability and ease of manufacture
2Adaptability or versatility
If multiple hydroxy fatty acids are synthesized, then various cosmetic effects are achieved, but industrial-scale production becomes difficult
Solution Approach 1:
The patent extracts and focuses on a single specific compound (10-hydroxystearic acid) from the broader class of hydroxy fatty acids, eliminating the complexity of producing multiple variants while maintaining versatile cosmetic effects through this one optimized molecule
Solution Approach 2:
The patent demonstrates that 10-hydroxystearic acid possesses multiple cosmetic functions including anti-aging, skin tone improvement, pore size reduction, photo-protection, and skin barrier enhancement, making it a universal ingredient that replaces the need for multiple different hydroxy fatty acids in formulations
3Reliability
If hydroxy fatty acids are applied to skin, then anti-aging effects are achieved, but solubility issues in cosmetic products occur
Solution Approach 1:
The patent utilizes the specific physical-chemical parameters of 10-hydroxystearic acid, particularly its solubility characteristics in different pH ranges and its ability to form stable complexes with retinoids, to achieve both anti-aging efficacy and improved solubility in cosmetic formulations
Solution Approach 2:
The patent employs solubility-enhancing agents and formulation intermediaries such as esters and salts of 10-hydroxystearic acid, which act as mediators to improve the solubility of the active ingredient while maintaining its anti-aging effectiveness in the final cosmetic product
Data Source
Figure 1
AI summary
The present invention relates to the cosmetic use of topical compositions comprising 10- hydroxystearic acid, a salt or ester thereof, for application to human skin for improving the condition and appearance of skin more particularly as an anti-wrinkle, for promoting a homogenous skin tone, for reduction of skin pore size, as a photo-protecting agent, and/or for improvement of the skin barrier function.