Post-Foaming Cleansing Composition for Mild High-Emollient Foaming
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Solution Overview
Problem
Conventional personal cleansing formulations with low surfactant levels and high emollient oils suffer from poor foaming performance and instability, limiting consumer appeal and flexibility in formulation.
Innovation Solution
A post-foaming composition using a combination of anionic surfactants, amine oxide surfactants, and hydrophobically modified alkali-swellable acrylic emulsion (HASE) polymers, along with a non-polar saturated aliphatic hydrocarbon foaming agent, packaged in a bi-compartmental aerosol system, to stabilize high emollient levels and achieve excellent foaming performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If high levels of emollient oils are incorporated into conventional personal cleansing formulations, then skin care qualities and mildness are improved, but foaming performance deteriorates
Solution Approach 1:
The invention changes the physical state parameter of the foaming agent by using a volatile hydrocarbon that transitions from liquid to gas phase upon contact with skin moisture or body heat, enabling copious foam generation from a low-viscosity base that can accommodate high emollient levels without compromising foaming performance
Solution Approach 2:
The volatile hydrocarbon foaming agent acts as an intermediary that bridges the contradiction between high emollient content and foaming performance. It is miscible with the low-viscosity base and emollients, yet upon phase change to gas, it generates copious foam independently of the emollient content, thus mediating between skin care benefits and foaming performance
2Object-affected harmful factors
If low surfactant levels are used to improve mildness, then skin care qualities are improved, but gel structure stability deteriorates
Solution Approach 1:
The invention changes the viscosity parameter of the base formulation by using a low-viscosity surfactant system combined with specific co-surfactants and rheology modifiers, enabling the formulation to remain stable without requiring high surfactant levels that would compromise mildness
Solution Approach 2:
The invention uses a composite surfactant system comprising multiple types of surfactants (anionic, nonionic, amphoteric) and co-surfactants working synergistically to provide both gel structure stability and mildness at low total surfactant levels, avoiding the need to choose between one or the other
3Object-affected harmful factors
If high levels of emollient oils are incorporated into conventional formulations, then skin care qualities are improved, but formulation stability deteriorates due to oil coalescence and creaming
Solution Approach 1:
The invention changes the density and viscosity parameters of the aqueous phase by using specific salts, sugars, and rheology modifiers to create a structured medium that provides steric and electrostatic stabilization to emollient oil droplets, preventing coalescence and creaming even at high emollient levels
Solution Approach 2:
The invention uses emulsifiers and co-surfactants as intermediary substances that position themselves at the oil-water interface, reducing interfacial tension and providing steric and electrostatic barriers that prevent oil droplet coalescence and creaming, thereby stabilizing high emollient content formulations
4Stability of the object's composition
If conventional structuring systems are used to stabilize high emollient levels, then formulation stability is improved, but foaming performance deteriorates
Solution Approach 1:
The invention changes the viscosity parameter by using a low-viscosity base formulation that does not rely on thickening agents or structured surfactant systems, thereby maintaining foaming performance while achieving stability through a different mechanism (volatile foaming agent phase change)
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 delivers significantly greater foam volume, maintains stability with high emollient levels, and provides a mild, cost-effective cleansing experience with improved skin care qualities.
Implementation Method 1
When the composition is applied to the skin or hair, the hydrocarbon transforms from a liquid to a gas phase, generating copious amounts of foam
Implementation Method 2
HASE polymers are hydrophobically modified alkali-swellable acrylic emulsion polymers
Implementation Method 3
a hydrophobically modified alkali-swellable acrylic emulsion (HASE) polymer
Data Source
AI summary
The present invention relates to personal cleansing compositions in 'post-foaming' gel or cream form, which are particularly mild, can contain high levels of emollient skin-care ingredients and produce copious amounts of creamy foam in use. The structure of the compositions enables stable post-foaming gels or creams to be made combining unusually low surfactant levels with high levels of emollient oils. The present invention provides an effective solution to the dual consumer need for highly skin caring cleansing formulations with excellent foaming characteristics.