5 Questions
What is the primary function of a coupler in the hair dyeing process?
To form the color of the dye
What is the role of the developer in the hair dyeing process?
To oxidize the dye precursor
What is the purpose of a dye precursor in the hair dyeing process?
To react with the coupler to form the color
What is the result of the reaction between the dye precursor and the coupler?
The formation of the final color of the dye
What is the primary function of the base in the hair dyeing process?
To form the base tone of the dye
Study Notes
Dye Precursor and Dyeing Process
- Dye precursor is a colorless compound, typically an aromatic compound with functional groups in the para-position (e.g. p-diamines or p-aminophenols).
- Dye precursor is used in permanent dyes.
- The dyeing process in hair involves a combination of three components:
- Dye precursor
- Developer
- Coupler
- The base is also involved in the dyeing process.
- Oxidizing agents, alkaline chemicals, and couplers are also involved in the process, but their exact roles are not specified.
This quiz covers the properties and characteristics of dye precursors, including their functional groups and aromatic compounds. Learn about the chemistry behind these colorless compounds.
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