Cleansing Composition Using Hydroxypropyl Guar for Foam and Mildness

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Solution Overview

Problem

Conventional cleansing compositions face challenges in achieving a balance between desirable performance properties such as foaming, viscosity, and mildness, often requiring trade-offs between these attributes.

Innovation Solution

The use of hydroxypropyl guar hydroxypropyltrimonium chloride, in combination with one or more additional cationic polymers like cationic cellulose, in cleansing compositions to enhance cosmetic properties and improve hair conditioning effects without relying on sulfate-based anionic surfactants.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If sulfate-based anionic surfactants are used, then foaming ability and cleansing efficacy are improved, but mildness to skin and hair deteriorates

Engineering Contradiction:

Improvefoaming abilityVSAvoidmildness

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent combines cationic polymers (hydroxypropyl guar hydroxypropyltrimonium chloride and cationic cellulose) with nonionic surfactants to create a multi-component system that merges the benefits of foam stabilization, conditioning, and gentle cleansing, replacing the need for sulfate-based anionic surfactants

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The invention uses a composite formulation containing multiple cationic polymers with different charge densities and molecular weights, combined with nonionic surfactants, to achieve a balanced performance profile that provides both foaming and mildness without relying on harsh sulfate surfactants

Inventive Principle:

Principle #40Composite materials

2Object-affected harmful factors

If nonionic surfactants are used, then mildness is improved, but foaming ability deteriorates

Engineering Contradiction:

ImprovemildnessVSAvoidfoaming ability

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The cationic polymers act as intermediaries that enhance the foaming ability of nonionic surfactants through synergistic interactions, allowing the system to achieve adequate foam generation while maintaining the mildness benefits of nonionic surfactants

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If cationic polymers are added, then conditioning effect is improved, but interaction with anionic surfactants may negatively impact viscosity and stability

Engineering Contradiction:

Improveconditioning effectVSAvoidviscosity and stability

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The patent uses cationic polymers with different charge densities and molecular weights to create localized variations in polymer-surfactant interactions, optimizing conditioning effects in certain regions while maintaining overall composition stability and appropriate viscosity

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The invention carefully controls parameters such as polymer concentration, charge density, and molecular weight to optimize the balance between conditioning effect and composition stability, ensuring that the cationic polymers provide hair conditioning without causing excessive viscosity changes or instability

Inventive Principle:

Principle #35Parameter changes

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 compositions provide abundant and long-lasting foaming, improve hair manageability by reducing tangling and frizz, and enhance curl definition and smoothness, all while maintaining mildness and avoiding the need for sulfate-based surfactants.

Implementation Method 1

The surfactant-water combination is then able to surround the specks of dirt and carry them away with rinsing. Evaluation of the compositions' foaming properties showed the foam is abundant, with more than half of the initial foam generated lasting at least 3 minutes after generation.

Methodology Applied

Scientific EffectSurfactant: Surfactant

Implementation Method 2

Considering the cationic charge of the hydroxypropyl guar hydroxypropyltrimonium chloride and additional cationic polymers, such as cationic celluloses, interferes with the anionic (negative) charge of the anionic surfactants included in the cleansing compositions.

Methodology Applied

Scientific EffectElectrostatic attraction: Electrostatics

Implementation Method 3

Surfactants interact with water, thereby allowing it to 'wet' surfaces more efficiently. The surfactant-water combination is then able to surround the specks of dirt and carry them away with rinsing.

Methodology Applied

Scientific EffectWetting: Wetting

Data Source

PatentUS20250073148A1Cleansing composition comprising hydroxypropyl GUAR hydroxypropyltrimonium chloride

Publication Date: 2025.03.06 LOREAL SA

AI summary

The instant disclosure is drawn to cleansing composition comprising: (a) a plurality of anionic surfactants, for example, a combination of one or more acyl isethionates and one or more acyl amino acids; (b) one or more amphoteric surfactants (c) one or more nonionic surfactants; (d) hydroxypropyl guar hydroxypropyltrimonium chloride; (e) one or more cationic polymers other than a cationic guar; and (f) water, wherein (a), (b), and (c) are in an amount totaling about 15 to about 40 wt. % of the composition. The compositions are useful for cleansing hair while providing improved cosmetic properties to the hair.