Skin Cleansing Formulation with Cationic Dextran Oil Deposition
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Solution Overview
Problem
Existing skin cleansing formulations struggle to provide moisturization while maintaining desirable consumer feel due to low efficiency of conventional deposition aids like cationic modified celluloses, which require high oil incorporation, adversely affecting foam/lathery in-use feel.
Innovation Solution
Incorporation of a cationic dextran polymer functionalized with quaternary ammonium groups to enhance the deposition of dermatologically acceptable oils onto mammalian skin, thereby improving moisturization without compromising consumer experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional deposition aids like cationic modified celluloses are used to enhance oil deposition, then oil deposition is improved, but the formulation requires high oil incorporation which adversely affects foam/lathery in-use feel
Solution Approach 1:
The patent changes the chemical parameters of the deposition aid by using cationic dextran polymer with quaternary ammonium groups instead of conventional cationic modified celluloses. This parameter change enables effective oil deposition at lower oil incorporation levels, thereby maintaining desirable foam and lathery in-use feel while achieving sufficient moisturization.
Solution Approach 2:
The patent employs a composite approach by combining cationic dextran polymer with dermatologically acceptable oils and vehicle to create a synergistic formulation. The cationic dextran polymer serves as an effective deposition aid that enhances oil adhesion to skin without requiring high oil concentrations, thus resolving the contradiction between oil deposition efficiency and consumer feel.
2Reliability
If high oil incorporation is used to compensate for low efficiency of conventional deposition aids, then moisturization is improved, but the consumer feel of the formulation deteriorates
Solution Approach 1:
The patent changes the deposition aid parameter from conventional cationic modified celluloses to cationic dextran polymer with quaternary ammonium groups. This parameter change significantly improves deposition efficiency, allowing the formulation to achieve reliable moisturization at lower oil incorporation levels, thereby maintaining positive consumer feel.
Solution Approach 2:
The patent effectively copies the successful mechanism of cationic polymers in oil deposition while using a different polymer backbone (dextran instead of cellulose). This copying approach maintains the effective deposition mechanism while improving overall formulation performance and consumer experience.
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 cationic dextran polymer effectively enhances oil deposition, providing moisturization while maintaining the desirable consumer feel of the skin cleansing formulation.
Implementation Method 1
a deposition aid polymer, wherein the deposition aid polymer is a cationic dextran polymer, comprising a dextran polymer functionalized with quaternary ammonium groups; wherein the deposition aid polymer enhances the deposition of the dermatologically acceptable oil from the skin cleansing formulation onto mammalian skin
Data Source
AI summary
A skin cleansing formulation is provided, comprising: a dermatologically acceptable vehicle; a dermatologically acceptable oil; and a deposition aid polymer, wherein the deposition aid polymer is a cationic dextran polymer, comprising a dextran polymer functionalized with quaternary ammonium groups; wherein the deposition aid polymer enhances the deposition of the dermatologically acceptable oil from the skin cleansing formulation onto mammalian skin.