Two-Part Hair Dye Composition with Segmented Surfactants
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Solution Overview
Problem
Existing hair dye compositions struggle to achieve homogeneous coloration and cosmetic acceptability, especially on multiple processed hair and hair with varying degrees of damage, often requiring additional conditioning products post-dyeing.
Innovation Solution
A two-part hair dye composition consisting of Part A, containing a hair dye and glutamate surfactant, and Part B, comprising an oxidizing agent and cationic or cationizable surfactant, mixed immediately before application, which includes various oils for improved dyeing and conditioning properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional hair dye compositions are used, then dyeing function is achieved, but homogeneous coloration and cosmetic acceptability deteriorate, especially on damaged hair
Solution Approach 1:
The composition is divided into two separate parts (Part A with dye and glutamate surfactant, Part B with oxidizing agent and cationic surfactant) that are mixed immediately before application. This segmentation allows each component to perform its function optimally without interference, ensuring homogeneous coloration while maintaining cosmetic acceptability on damaged hair.
Solution Approach 2:
The invention combines multiple surfactant types (glutamate surfactant and cationic/cationizable surfactant) with various oils (paraffin oil, isopropyl myristate, palmitate, stearate, isostearate, oleyl oleate, isocetyl stearate, hexyl laurate, dibutyl adipate, dioctyl adipate, myristyl myristate, oleyl erucate, cetyl palmitate, argan oil, shea butter oil, olive oil, almond oil, avocado oil, ricinus oil, coconut oil, palm oil, sesame oil, peanut oil, whale oil, sunflower oil, peach kernel oil, wheat germ oil, macadamia nut oil, night primrose oil, jojoba oil, castor oil, or soya oil, lanolin, passiflora oil, black cumin oil, borage oil, grapeseed oil, macadamia oil, rosehip oil and hempseed oil) to create a composite formulation that simultaneously achieves homogeneous coloration and excellent cosmetic condition.
2Quantity of substance
If multiple processed hair and hair with varying degrees of damage are dyed, then coloration is achieved, but homogeneous distribution of color deteriorates
Solution Approach 1:
The composition provides different functions at different stages: glutamate surfactant in Part A prepares the hair surface for uniform dye uptake, while cationic surfactant in Part B ensures even distribution and penetration throughout the hair shaft. This local quality approach ensures homogeneous color distribution even on hair with varying degrees of damage by adapting the surfactant action to different hair conditions.
Solution Approach 2:
The two-part system allows for controlled parameter changes during the dyeing process. The oxidizing agent in Part B activates the dye while the cationic surfactant simultaneously modifies the hair surface properties, enabling uniform dye penetration and homogeneous color distribution across hair with varying damage levels.
3Reliability
If additional conditioning compositions are used after dyeing, then cosmetic properties are improved, but process complexity increases
Solution Approach 1:
The hair dye composition is designed to perform multiple functions simultaneously: it provides dyeing function through the oxidative dye system, conditioning function through glutamate and cationic surfactants, and protection function through various oils. This multi-functionality eliminates the need for separate conditioning products, reducing process complexity while maintaining excellent cosmetic properties.
Solution Approach 2:
The invention merges the dyeing function and conditioning function into a single composition system. The surfactants and oils that provide conditioning benefits are integrated into both Part A and Part B, so that the dyeing process itself also conditions and protects the hair, eliminating the need for additional conditioning steps.
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 ensures homogeneous coloration and leaves hair in an excellent cosmetically acceptable condition, providing long-lasting colors that are stable against environmental influences and washing, without the need for additional conditioning products.
Implementation Method 1
Part B is an aqueous composition and comprises at least one oxidizing agent
Implementation Method 2
Part A is based on at least one hair dye and comprising further at least one glutamate surfactant and Part B is an aqueous composition and comprises at least one cationic or cationizable surfactant
Data Source
AI summary
Present invention relates to a two part colouring composition for hair with improved dyeing and conditioning properties of hair. The object of the present invention a two part hair dyeing composition consisting of Parts A and B which are mixed immediately before application onto hair wherein Part A is based on at least one hair dye and comprising further at least one amino acid surfactant and Part B is an aqueous composition and comprising at least one oxidizing agent and at least one cationic or cationizable surfactant, wherein parts A and/or B comprises additionally at least one oil.