Hair Bleaching and Coloring Composition With Direct Dye Stabilization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hair bleaching and dyeing processes cause significant damage due to the instability of direct dyes under oxidative conditions, requiring separate processes that result in uneven coloration and hair damage.
Innovation Solution
A composition comprising direct dyes, a bleaching agent, an oxidizing agent, and an oxidizable solvent is used simultaneously to stabilize the dyes, allowing for a single process that achieves darker and more vivid colors while minimizing hair damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If direct dyes are used under highly oxidative conditions for hair bleaching, then hair can be coloured, but the dyes are unstable and cause uneven coloration
Solution Approach 1:
The patent introduces an intermediary substance (reducing agent or stabilizer) that mediates between the direct dyes and the oxidative environment. This intermediary protects the dye molecules from oxidation damage while allowing the bleaching process to proceed, thereby maintaining both dye stability and coloration uniformity during the hair coloring process
2Productivity
If hair is bleached and coloured in two separate processes, then each process can be optimized, but hair damage is considerable
Solution Approach 1:
The patent merges the bleaching and coloring processes into a single unified composition and application step. The composition contains both bleaching agents and direct dyes that work simultaneously on the hair, eliminating the need for sequential processing. This reduces cumulative hair damage while maintaining the effectiveness of both bleaching and coloration functions
3Manufacturing precision
If direct dyes are used in oxidative conditions, then hair can be coloured, but the colors are not dark or vivid
Solution Approach 1:
The patent employs an intermediary substance that creates a protective environment for the direct dyes during oxidation. This intermediary prevents dye degradation and allows the dyes to maintain their color intensity and vividness even in the presence of oxidative agents, achieving both dark/vivid colors and dye stability simultaneously
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 composition provides improved dye stability, resulting in homogeneous coloration and reduced hair damage compared to traditional methods.
Implementation Method 1
a composition comprising a direct dye, at least one compound with bleaching effect, at least one oxidizing agent, at least one alkalizing agent and at least one oxidizable solvent
Data Source
AI summary
Present invention relates to an aqueous composition for bleaching and colouring hair which comprises direct dyes and an oxidizable solvent in addition to a compound with a bleaching effect, an alkalizing agent and an oxidizing agent. It is furthermore the object of the present invention is the use of oxidizable solvent, preferably an aromatic or aliphatic alcohol for stabilizing a direct dye in an aqueous composition comprising at least one compound with hair bleaching effect, at least one oxidizing agent and at least one alkalizing agent.