Stable Cosmetic Composition with Low Oil Content
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Solution Overview
Problem
Existing cosmetic compositions comprising an oil and an alcohol often lack stability, which is a significant challenge in achieving effective care effects for keratinous substances.
Innovation Solution
A composition comprising at least one fatty alcohol, one fatty acid ester oil, one C2-C4 diol, and water, with a total oil content of less than 15% by weight, which enhances stability and penetration properties while avoiding a greasy feel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an oil is used as a medium in cosmetic compositions to achieve good penetration of active agents into keratinous substances, then penetration property is improved, but stability of the composition deteriorates
Solution Approach 1:
The patent applies parameter changes by precisely controlling the water content at 35% or less and the total oil content at less than 15%, along with specific ratios of fatty alcohol to fatty acid ester oil (0.05 to 5 weight ratio). This optimization of compositional parameters enables the formulation to achieve both improved penetration of active agents into keratinous substances and enhanced stability, resolving the contradiction between these two properties.
2Reliability
If a higher oil content is used to improve penetration and care effects, then penetration property is improved, but the composition becomes greasy
Solution Approach 1:
The patent employs parameter changes by limiting the total oil content to less than 15% and optimizing the specific composition ratios of fatty alcohol, fatty acid ester oil, and water. This controlled formulation achieves effective penetration of active agents while preventing the greasy sensation that would result from higher oil contents, thus resolving the contradiction between penetration efficacy and sensory comfort.
Data Source
AI summary
A composition contains (a) at least one fatty alcohol, (b) at least one fatty acid ester oil, (c) at least one C2-C4 diol, (d) water in an amount of 35% by weight or less relative to the total weight of the composition. A total amount of oil(s) is less than 15% by weight, relative to the total weight of the composition.