Amino Acid Oxidizing Composition for Reduced Keratin Fiber Damage
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Solution Overview
Problem
Existing aqueous hydrogen peroxide-containing compositions cause significant chemical damage to biological materials during bleaching or dyeing processes, and there is a need to improve these processes to reduce such damage.
Innovation Solution
Aqueous oxidizing compositions comprising amino acids with a molar mass of 120 g/mol or less, along with polycarboxylic acids, are used in two-part bleaching and oxidative dyeing compositions to minimize damage to keratin fibers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If aqueous hydrogen peroxide-containing compositions are used for bleaching or dyeing, then bleaching power and dyeing effectiveness are improved, but chemical damage to keratin fibers increases
Solution Approach 1:
Amino acids act as intermediary substances that mediate between the oxidizing composition and keratin fibers. They bind to both the hydrogen peroxide/oxidizing agents and the keratin, creating a protective interface that reduces direct harmful interactions while allowing the bleaching/dyeing function to proceed. The amino acids serve as a buffer that absorbs excess oxidative stress and prevents direct attack on the keratin protein structure.
Solution Approach 2:
The invention changes the chemical parameters of the oxidizing composition by adding amino acids with specific molar masses (120 g/mol or less). This modification alters the reaction kinetics, oxidation-reduction potential, and interaction mechanisms between the oxidizing agents and keratin fibers, enabling effective bleaching while reducing damaging effects through optimized chemical parameters.
2Productivity
If the amount of oxidizing composition is increased to maintain bleaching effectiveness, then bleaching power is improved, but chemical damage to keratin fibers increases
Solution Approach 1:
Amino acids serve as protective intermediaries that allow higher concentrations of oxidizing composition to be applied without proportionally increasing damage. The amino acids bind to excess oxidizing agents, preventing them from directly attacking keratin fibers, thus enabling maintained bleaching effectiveness with reduced harmful effects.
Solution Approach 2:
The invention converts the potentially harmful excess oxidizing capacity into a beneficial protective mechanism. The amino acids react with excess oxidizing agents, transforming what would be damaging free radicals and oxidative stress into controlled reactions that protect keratin while maintaining necessary bleaching function.
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 addition of amino acids and polycarboxylic acids results in reduced damage to keratin fibers, enhancing cosmetic properties such as touch, feel, shine, and color evenness while maintaining bleaching power.
Implementation Method 1
aqueous oxidizing compositions comprising amino acids... hydrogen peroxide... bleaching or dyeing of solid substrates require the presence of oxidizing compositions
Data Source
AI summary
The present invention relates to aqueous oxidizing compositions comprising amino acids which reduce hair damage during chemical services. The effect of hair damage reduction was found to be further improved when polycarboxylic acids were added to bleaching powder, oxidative dyeing, and permanent waving compositions.