Question

Compound dyes may combine metallic salts with:

A) Progressive dyes
B) Permanent dyes
C) Semi-Permanent dyes
D) Vegetable dyes

Answer 1

Compound dyes may combine metallic salts with permanent dyes.

Step-by-step explanation:

Compound dyes may combine metallic salts with:

B) Permanent dyes

Permanent hair coloring requires three components: 1) 1,4-diaminobenzene or 2,5-diaminotoluene, 2) a coupling agent, and 3) an oxidant. The process involves the oxidation of the 1,4-diaminobenzene derivative to the quinone state, followed by the reaction with a coupler compound, and finally the oxidation of the resulting compound to give the final dye. These steps involve the combination of metallic salts with permanent dyes.