Handheld Styling Device Substrate for Hair Dyeing
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Solution Overview
Problem
Standard dyeing processes for keratin fibers, such as hair, are impractical for achieving varied and precise colored or bleached patterns due to long processing times, bulkiness of compositions, and risks of staining and application errors, while existing substrate-based methods are cumbersome and time-consuming.
Innovation Solution
A hand-held styling device with heated treatment surfaces coated with substrates containing dyes and oxidizing agents, allowing for rapid application and precise control over pattern creation, reducing processing time and minimizing staining risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standard oxidation dyeing processes are used, then permanent and resistant colorings are achieved, but the processes are time-consuming and difficult to control for precise patterns
Solution Approach 1:
The substrate is pre-coated with oxidation dyes and couplers before use, allowing the coloring components to be prepared in advance. This preliminary preparation enables rapid pattern application without requiring time-consuming mixing of dyeing compositions during the actual dyeing process, thus reducing processing time while maintaining color persistence.
Solution Approach 2:
A substrate acts as an intermediary carrier between the dyeing composition and the keratin fibres. The substrate pre-coated with oxidation dyes and couplers allows controlled transfer of coloring agents to the hair, enabling precise pattern creation while maintaining the chemical reactions necessary for permanent coloring.
2Ease of operation
If direct dyes are used for semi-permanent dyeing, then application is simpler, but the colorings are not resistant to external agents
Solution Approach 1:
The invention combines direct dyes with oxidation dyes and couplers on the same substrate. The direct dyes provide immediate color and ease of application, while the oxidation dyes and couplers react to form permanent, resistant colorings. This merging allows the process to achieve both simplicity of application and durability of results.
3Adaptability or versatility
If standard dyeing compositions are stored, then various colors are available, but bulkiness and storage problems arise
Solution Approach 1:
The dyeing system is segmented into separate components: a substrate pre-coated with oxidation dyes and couplers, and an aqueous oxidizing composition applied separately. This segmentation allows the coloring agents to be stored in a compact, concentrated form on the substrate, reducing storage bulk while maintaining the ability to create various colors through different substrate coatings.
Solution Approach 2:
The invention changes the physical state and concentration parameters of the dyeing components. By pre-coating the substrate with concentrated oxidation dyes and couplers, the system reduces the volume of liquid compositions needed, thereby decreasing storage space requirements while maintaining color variety through different substrate formulations.
4Ease of operation
If manual application of dyeing compositions is used, then flexibility is maintained, but staining of hands and application errors occur
Solution Approach 1:
The substrate serves as an intermediary tool between the operator and the keratin fibres. It allows manual application flexibility while containing the oxidation dyes and couplers in a controlled format, preventing direct contact with hands and reducing staining risks. The substrate can be easily positioned and removed, minimizing application errors.
5Manufacturing precision
If existing substrate-based methods are used, then some pattern creation is possible, but the processes are cumbersome and time-consuming
Solution Approach 1:
The substrate is pre-coated with oxidation dyes and couplers in specific patterns before use. This preliminary preparation of patterns on the substrate enables rapid application to hair without requiring time-consuming manual pattern creation during the dyeing process, thus improving processing efficiency while maintaining pattern precision.
Solution Approach 2:
The invention replaces complex manual mechanical application processes with a simplified system where pre-patterned substrates are applied to the hair. This substitution reduces the mechanical complexity and time required for pattern creation while maintaining precision through the pre-coated substrate design.
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 solution enables the production of sharp, precise, and visually appealing colored or bleached patterns on keratin fibers with shorter processing times, improved storage efficiency, and reduced staining risks, while maintaining color persistence against external agents.
Implementation Method 1
at least one of the treatment surfaces being intended to be heated
Implementation Method 2
a layer containing one or more dyes and/or oxidizing agents
Data Source
AI summary
The present invention relates to the use, for dyeing or lightening keratin fibres, in particular human keratin fibres such as the hair, of a hand-held styling apparatus (1) equipped with at least one treatment surface (2d, 3d) partially or totally covered with at least one substrate (6) comprising a surface (6a) coated with at least one layer (6b) containing one or more dyes, preferably chosen from oxidation dyes and/or direct dyes, and/or one or more oxidizing agents. The invention also relates to an assembly (11, 24, 26) intended for dyeing or lightening keratin fibres, in particular human keratin fibres such as the hair, comprising at least one aqueous composition and at least one hand-held styling device (1) as defined above.