Tea Polyphenol and Ferrous Salt Hair Dye Complex
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Solution Overview
Problem
Current hair dye products, especially natural ones, face challenges in achieving uniform and long-lasting color, particularly in blackening white hair, due to compatibility issues among active ingredients, requiring multiple applications and lengthy processes, and often contain harmful substances.
Innovation Solution
A hair dye product combining tea-polyphenol or its oxidation product, tea-pigment, with a ferrous salt as a mordant, which reacts to form a stable colored complex, allowing for one-step hair dyeing with improved color retention and reduced processing time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If natural hair dyeing agents are used, then safety and non-stimulating properties are improved, but dyeing effectiveness and color retention are worsened
Solution Approach 1:
The patent combines tea-polyphenol (a natural substance) with ferrous salt (a chemical mordant) to create a composite dyeing system. This composite approach allows the natural tea-polyphenol to provide safety and non-stimulating properties while the ferrous salt forms stable colored complexes that improve dyeing effectiveness and color retention, resolving the contradiction between natural safety and dyeing performance
2Adaptability or versatility
If multiple natural ingredients are mixed, then naturalness is improved, but compatibility and uniform composition are worsened
Solution Approach 1:
The patent extracts and utilizes the key active component tea-polyphenol from tea leaves, focusing on this single effective substance rather than mixing multiple natural ingredients. This extraction approach ensures compatibility and uniform composition while maintaining the naturalness benefit, as tea-polyphenol alone provides the necessary dyeing properties when combined with ferrous salt
3Object-affected harmful factors
If traditional natural dyeing methods are used, then safety is improved, but operation complexity and time consumption are worsened
Solution Approach 1:
The patent merges the dyeing action and color formation into a single step by combining tea-polyphenol and ferrous salt in one composition. This eliminates the need for multiple separate applications and washing steps required by traditional natural dyeing methods, reducing operation complexity and time consumption while maintaining safety through the natural tea-polyphenol base
4Productivity
If chemically synthesized hair dyeing agents are used, then convenience and speed are improved, but harmful substances and health risks are worsened
Solution Approach 1:
The patent converts the traditionally harmful role of chemical mordants into a beneficial function by using ferrous salt to form stable colored complexes with tea-polyphenol. This approach maintains the convenience and speed of chemical dyeing agents while eliminating harmful substances like p-phenylenediamine and thioglycolic acid, as the ferrous salt-tea-polyphenol complex provides effective and safe coloring
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 product achieves effective, long-lasting hair color with simplified application and reduced time, while being safer than traditional dyes by using natural, non-harmful ingredients, maintaining stability and performance over multiple uses.
Implementation Method 1
tea-polyphenol and/or its oxidation product, tea-pigment, as dye active and a metal salt for dyeing human or animal hair
Implementation Method 2
Tea-pigment is derived from the oxidation of catechins and their derivatives in tea
Data Source
AI summary
The present invention relates to the use of tea-polyphenol and/or tea-pigment as a dye and its products, and specifically relates to use of a combination of tea-polyphenol and/or its oxidation product, tea-pigment, as a dye active and a metal salt for dyeing human or animal hair, or use of the combination for the preparation of a product for dyeing human or animal hair, and to a hair dyeing product or a hair dyeing combination product comprising tea-polyphenol and/or tea-pigment. The present invention has the advantages including good dyeing fastness, natural and bright, not-stimulating, not-allergenic, not-mutagenic, no damage to hair, simple to operate and short time consuming.