Hair Coloring Oxidizing Component with Alkalinity Buffer System

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Solution Overview

Problem

Conventional hair coloring and bleaching techniques cause damage to hair and require multiple oxidizing and tint components for different levels of coloration, leading to complexity and safety concerns, especially with extreme pH levels.

Innovation Solution

A hair treating product with an oxidizing component having an acidic pH above 1.5 and a buffer system, combined with a tint component of alkaline pH, which when mixed, produce a composition with a pH between 6.0 and 10.5, reducing the alkalinity and providing a universal line-up for both Level 2 and Level 3 coloration while ensuring safety.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional oxidizing components with high alkalinity are used to achieve effective coloration, then color performance is improved, but hair damage increases and safety concerns arise

Engineering Contradiction:

Improvecolor performanceVSAvoidhair damage

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a buffer system as an intermediary substance that mediates between the alkaline tint component and the hair. The buffer system (comprising a buffering acidic compound and a buffering alkali compound) neutralizes excessive alkalinity while preserving the essential coloration function, thereby reducing hair damage without compromising color performance

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent changes the pH parameter of the oxidizing component by incorporating a buffer system that maintains the pH within a safe range (above 1.5 but not excessively alkaline). This parameter modification allows the composition to achieve effective coloration while minimizing harmful effects on hair

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If multiple oxidizing components with different pH levels are used for Level 2 and Level 3 coloration, then coloration versatility is improved, but device complexity increases

Engineering Contradiction:

Improvecoloration versatilityVSAvoidproduct line-up complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent creates a universal oxidizing component with a buffer system that can function effectively for both Level 2 (demi-permanent) and Level 3 (permanent) coloration. The buffer system enables a single oxidizing component to work across different coloration levels by neutralizing alkalinity variations, eliminating the need for separate oxidizing components for different treatments

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the functions of multiple oxidizing components into a single universal formulation. By combining the oxidizing agent with a buffer system in one component, the patent integrates the capabilities of Level 2 and Level 3 treatments into a single product line-up, simplifying the overall system while maintaining versatility

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If extreme pH levels are used to achieve strong coloration effects, then color intensity is improved, but safety concerns increase

Engineering Contradiction:

Improvecolor intensityVSAvoidsafety risks

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent converts the potentially harmful effect of high alkalinity into a beneficial buffering action. The buffer system (comprising acidic and alkali compounds) neutralizes excessive pH levels, transforming an unsafe condition into a safe and effective one. This allows the composition to maintain sufficient alkalinity for coloration while preventing harmful effects

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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 solution effectively reduces hair damage, simplifies product line-ups, and ensures safety by neutralizing alkalinity, allowing the same tint components to be used for both permanent and demi-permanent treatments without extreme pH risks, maintaining color performance.

Implementation Method 1

a buffer system; said buffer system comprising: a buffering acidic compound; a buffering alkali compound

Methodology Applied

Scientific EffectBuffer system:

Implementation Method 2

for cancelling the alkalinity of a tint component

Methodology Applied

Scientific EffectAcid-base neutralization:

Implementation Method 3

oxidative hair dye precursors, which can diffuse into the hair through the cuticle and into the cortex where they then react with each other and a suitable oxidizing agent to form the end dye molecules

Methodology Applied

Scientific EffectOxidation: Oxidation

Data Source

PatentUS11344485B2Hair colouring or bleaching products, and compositions thereof, with alkali canceling effect

Publication Date: 2022.05.31 WELLA INT OPERATIONS SWITZERLAND SARL

AI summary

It is provided herewith a hair treating product comprising an oxidizing component and a tint component; a hair treating composition obtained upon mixing of the oxidizing component and the tint component; the use of the oxidizing component in a hair treating product, for cancelling the alkalinity of a tint component; and an oxidizing component comprising a buffer system. The hair treating product, and the corresponding hair treating composition, is particularly useful for colouring or bleaching hair. It is useful for providing permanent or demi-permanent coloration or bleaching to keratin fibers.