Natural Soap Cleanser Gel With pH Buffering for Low Irritation

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Solution Overview

Problem

Formulating a cleanser that uses natural soaps, such as fatty acid salts, without causing skin irritation and maintaining a suitable viscosity and rinsability, while avoiding non-natural detergents, is challenging due to pH-related issues with conventional additives and the tendency of natural soaps to irritate the skin.

Innovation Solution

A cleanser formulation containing a fatty acid salt as the primary cleansing agent, a moisturizer, and a viscosity modifier like xanthan gum, with a pH between 6 and 11, to create a gel-like consistency that maintains the natural soap in a salt form and prevents skin irritation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If natural soaps (fatty acid salts) are used as the primary cleansing agent, then the cleanser contains high natural ingredient content and avoids non-natural detergents, but the cleanser may cause skin irritation and has difficulty maintaining suitable viscosity

Engineering Contradiction:
Improvenatural ingredient contentVSAvoidskin irritation
Core Design Contradiction:
Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a buffering agent (such as magnesium carbonate, magnesium hydroxide, or zinc carbonate) as an intermediary substance that mediates between the natural soap and the skin. This buffering agent neutralizes excess alkalinity from the fatty acid salt, reducing skin irritation while preserving the natural cleansing properties. The buffer acts as a chemical mediator that allows natural soaps to function effectively without causing harm.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent modifies the pH parameter of the cleanser formulation by adjusting the alkalinity level through the buffering agent. By controlling the pH to be within a specific range (8-10), the formulation maintains the cleansing effectiveness of natural soaps while reducing skin irritation. This parameter change allows the natural soap to function optimally without causing harmful effects.

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If natural soaps (fatty acid salts) are used as the primary cleansing agent, then the cleanser avoids non-naturally derived detergents, but the cleanser has difficulty achieving adequate cleansing effectiveness

Engineering Contradiction:
Improvenatural ingredient contentVSAvoidcleansing effectiveness
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent creates a composite cleanser formulation that combines natural soaps (fatty acid salts) with complementary natural ingredients such as aloe vera, chamomile, and other soothing agents. This composite approach enhances the cleansing effectiveness of the natural soap while adding beneficial properties that improve skin compatibility. The combination allows the natural soap to achieve adequate cleansing without the need for non-natural detergents.

Inventive Principle:
Principle #40Composite materials

3Stability of the object's composition

If conventional additives are used in the cleanser formulation, then the cleanser achieves suitable viscosity and stability, but the pH-related issues cause skin irritation

Engineering Contradiction:
Improveviscosity and stabilityVSAvoidskin irritation
Core Design Contradiction:
Stability of the object's compositionVSObject-affected harmful factors

Solution Approach 1:

The buffering agent serves as an intermediary that allows conventional viscosity-modifying additives to function at higher pH levels without causing skin irritation. The buffer neutralizes the alkaline effects of these additives, enabling them to provide suitable viscosity and stability while maintaining skin compatibility. This intermediary approach resolves the conflict between formulation stability and skin safety.

Inventive Principle:
Principle #24Intermediary (Mediator)

4Adaptability or versatility

If the cleanser formulation aims for high natural ingredient content, then non-naturally derived detergents are avoided, but formulating challenges arise regarding viscosity and rinsability

Engineering Contradiction:
Improvenatural ingredient contentVSAvoidformulation complexity
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent simplifies the formulation process by establishing specific parameter ranges for pH (8-10) and buffering agent concentration. By working within these defined parameters, the formulation of natural soap-based cleansers becomes more manageable, reducing the complexity of achieving both high natural content and desirable physical properties like viscosity and rinsability.

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 formulation achieves a suitable viscosity, effective cleansing, and reduces skin irritation, ensuring the cleanser is easily rinsable without leaving a film, while maintaining a high natural ingredient content.

Implementation Method 1

a viscosity modifier like xanthan gum, with a pH between 6 and 11, to create a gel-like consistency

Methodology Applied
Scientific EffectViscosity modification:

Implementation Method 2

maintaining a suitable viscosity and rinsability, while avoiding non-natural detergents

Methodology Applied
Scientific EffectpH control:

Data Source

PatentUS20260034040A1cleansers
Publication Date: 2026.02.05 DR SQUATCH LLC

AI summary

Disclosed are cleanser formulations in a gel form including a fatty acid salt as the primary cleansing agent. The cleanser formulations have a pH ranging from 6-11. The cleanser gels can contain at least 90 weight percent of natural or naturally derived ingredients.