Question

Permanent hair color applications are classified as either:

a) Temporary and semi-permanent
b) Direct and indirect
c) Single-process and double-process
d) Natural and synthetic

Answer 1

Permanent hair color applications are classified as single-process and double-process.

Step-by-step explanation:

Permanent hair color applications are classified as single-process and double-process. Single-process hair color involves applying the dye directly to the hair without any pre-lightening or bleaching. This type of color is used to darken hair or cover up gray hair. Double-process hair color, on the other hand, involves two steps: pre-lightening the hair and then applying the desired color. This technique is used to achieve lighter shades or vibrant fashion colors.