Dual-Compartment Oxidation Dyeing Device for Keratin Fibers
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional oxidation dyeing processes for keratin fibers require mixing of dye and oxidizing compositions at the time of use, leading to hand staining, uneven application, and unsatisfactory color results due to the difficulty in precise mixing and application.
Innovation Solution
A device with two compartments, one for oxidation dyes and another for chemical oxidizing agents, allowing easy mixing and application directly to keratin fibers, using acrylic anionic associative polymers and fatty alcohols or nonionic surfactants to facilitate the process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dye composition and oxidizing composition are mixed at the time of use, then permanent and strong colorings are achieved, but hands of the user or hairstylist are stained
Solution Approach 1:
The device divides the dyeing system into separate compartments: a first compartment for dye composition and a second compartment for oxidizing composition. These compartments are connected via a communication channel that allows mixing only when needed, preventing hand staining while maintaining coloring effectiveness.
Solution Approach 2:
The communication channel acts as an intermediary mechanism between the two compartments, enabling controlled mixing of the dye and oxidizing compositions only when the compartments are placed in communication, thus preventing premature contact and hand staining.
2Reliability
If dye composition and oxidizing composition are mixed at the time of use, then coloring is achieved, but precise and uniform application is difficult to perform
Solution Approach 1:
The device segments the application process into controlled stages: first applying the dye composition from the first compartment, then mixing with oxidizing composition from the second compartment through the communication channel. This segmentation enables precise and uniform application by controlling when and where mixing occurs.
3Ease of manufacture
If conventional mixing kits are used, then dyeing is possible, but restitution of the dyeing mixture at the outlet is insufficient
Solution Approach 1:
The device merges the dye composition and oxidizing composition in a controlled manner through the communication channel, creating a unified mixture that can be effectively applied. This merging mechanism ensures sufficient restitution of the dyeing mixture at the outlet for satisfactory 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 device enables precise and efficient mixing and application of the dye composition, preventing hand staining and ensuring strong, uniform color that is resistant to external factors like light and washing.
Implementation Method 1
Conventional oxidation dyeing processes generally consist in applying to keratin fibres a dye composition comprising oxidation bases and couplers with an oxidizing composition comprising hydrogen peroxide (H2O2 or aqueous hydrogen peroxide solution)
Data Source
AI summary
The present invention relates to a device (1) for dyeing keratin fibres, comprising at least two compartments (2) and (3), the first compartment (2) comprising a first composition (A) comprising oxidation dyes and the second compartment (3) comprising a second composition (B) comprising chemical oxidizing agents. Said device allows easy mixing of the compositions contained in said compartments at the time of use.