N-acetyl diglycolamine humectant for non-greasy skin hydration
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Solution Overview
Problem
Current moisturizing products often leave a greasy, sticky, or tacky feel on the skin, which is undesirable for consumers, and fail to provide long-lasting moisturization.
Innovation Solution
Personal care formulations containing a compound of formula (I), specifically N-acetyl diglycolamine (DGA) acetamide, which acts as a humectant, providing improved moisturization and a smooth feel on the skin without the unwanted tactile qualities, and can be used in combination with a cosmetically acceptable vehicle for enhanced skin and hair care.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional humectants like glycerol are used to provide moisturization, then moisturizing efficacy is improved, but the skin feel becomes sticky, tacky, or greasy which is undesirable
Solution Approach 1:
The patent changes the chemical structure parameters of traditional humectants by introducing specific molecular structures (formula I with n=2-5, R1=C1-C3 alkyl, R2=C1-C6 alkyl) that fundamentally alter the tactile properties while maintaining humectant functionality, transforming the sticky/greasy feel into a smooth non-greasy sensation
Solution Approach 2:
The invention creates a composite molecular structure combining the humectant functional group with specific alkyl chain configurations that integrate water-retention capability with desirable sensory properties, achieving both effective moisturization and smooth skin feel simultaneously
2Quantity of substance
If moisturizing products are applied to skin, then hydration is provided, but the effect duration is insufficient and does not last long term
Solution Approach 1:
The patent achieves continuous moisturization action by formulating compounds that maintain their humectant properties over extended periods (up to 30 hours), ensuring uninterrupted water retention and hydration throughout the day without requiring reapplication
Solution Approach 2:
The invention uses sub-optimal concentrations of highly effective humectant compounds (0.01-10% wt) to achieve sufficient moisturization, where the enhanced molecular efficiency allows lower doses to provide prolonged effects comparable to or exceeding traditional higher concentrations
3Reliability
If humectants with high water retention capability are used, then moisturization efficacy is improved, but the tactile sensation becomes heavy and undesirable
Solution Approach 1:
The patent modifies the molecular weight and chain length parameters of humectant molecules (specific C1-C6 alkyl chains) to reduce the heavy feeling while preserving water-binding capacity, creating a optimal balance between efficacy and sensory acceptability
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 formulations exhibit improved moisturization efficacy, providing long-lasting hydration up to 30 hours with a non-greasy, non-sticky feel, making them more desirable for consumer use.
Implementation Method 1
Several humectants have been known and used in personal care compositions... The personal care formulations of the disclosure provide moisturization of hair and/or skin by retaining water
Data Source
AI summary
The disclosure provides personal care compositions that comprise a compound of formula (I) wherein n is an integer from 2 to 5, R1 is independently H or C1-C3 alkyl and R2 is an unsubstituted linear or branched C1-C6 alkyl and a cosmetically acceptable vehicle. In particular, the compound of formula (I) is diglycolamine acetamide The composition may be used to moisturise skin or hair.