Biodegradable Complexing Agent for Hair Bleaching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional bleaching agents for hair cause significant damage and require multiple applications to achieve desired lightening, especially with dark hair, due to oxidative damage and poor biodegradability of complexing agents like HEDP and EDTA, which are not environmentally friendly.
Innovation Solution
A bleaching agent containing a biodegradable complexing agent of the formula (I) and an amino acid or protein hydrolyzate, combined with an oxidizing agent, to enhance bleaching performance while minimizing hair damage and heat generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If HEDP or EDTA are used as complexing agents in bleaching products, then hydrogen peroxide stability is improved and temperature increase is prevented, but biodegradability deteriorates and environmental friendliness worsens
Solution Approach 1:
The patent changes the chemical parameters of the complexing agent by using MGDA (N,N-bis(carboxymethyl)alanine) instead of HEDP or EDTA. MGDA has different molecular structure and chemical properties that provide both effective hydrogen peroxide stabilization and good biodegradability, thus resolving the contradiction between reliability and environmental compatibility
Solution Approach 2:
The patent creates a composite formulation combining MGDA with specific amino acids (arginine, lysine, histidine) and protein hydrolysates. This composite approach enhances the overall performance by combining the complexing and stabilizing function of MGDA with the hair care and damage mitigation properties of amino acids, achieving both effective bleaching and reduced hair damage
2Object-generated harmful factors
If polyhydroxycarboxylic acids are used as complexing agents, then biodegradability is improved, but bleaching performance deteriorates
Solution Approach 1:
The patent merges multiple functional components into a single formulation: MGDA provides complexing and stabilization, while added amino acids (arginine, lysine, histidine) and protein hydrolysates provide hair care functions and enhance bleaching performance. This combination achieves both ecological compatibility and effective bleaching that polyhydroxycarboxylic acids alone cannot provide
Solution Approach 2:
MGDA serves multiple functions in the formulation: it acts as a complexing agent to prevent metal ion decomposition, a stabilizer for hydrogen peroxide, and an environmentally friendly alternative to conventional agents. The added amino acids provide additional functions including hair conditioning and enhanced bleaching efficacy, creating a multi-functional product that addresses both ecological and performance requirements
3Illumination intensity
If repeated bleaching processes are applied to dark hair, then lightening effect is improved, but hair damage worsens
Solution Approach 1:
The patent incorporates amino acids and protein hydrolysates that act preliminarily to protect hair structure before and during the oxidative bleaching process. These components help maintain hair integrity by providing structural support and reducing oxidative damage, enabling repeated bleaching applications without severe deterioration of hair strength
Solution Approach 2:
The patent converts potentially harmful oxidative effects into beneficial outcomes by using amino acids and protein hydrolysates that undergo oxidation themselves, thereby protecting the hair's structural proteins. The oxidizing agents selectively target melanin while the amino acid components sacrifice themselves to preserve hair integrity, transforming the harmful oxidative action into a selective lightening process that spares structural components
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 agent achieves superior bleaching performance with reduced hair damage and improved stability, maintaining a favorable temperature profile, thus being more environmentally friendly and effective than traditional agents.
Implementation Method 1
complexing agents are intended to prevent the decomposition of hydrogen peroxide by metal ions accumulated in the hair fibers
Implementation Method 2
The oxidizing agents contained in bleaching products are capable of lightening the hair fiber through the oxidative destruction of the hair's natural pigment, melanin
Implementation Method 3
the use of complexing agents in lightening or bleaching products should reduce hair damage
Data Source
AI summary
The invention relates to agents for an oxidative color change of keratin fibers, in particular human hair, containing (a) at least one complexing agent of the general formula (I), (b) at least one amino acid and/or a protein hydrolysate, and (c) at least one oxidation agent.