Permanent Waving

Front

The layer of the hair that provides the strength and elasticity of human hair is the ______________.

Back

Cortex

Front

The natural pH of hair is between ______________.

Back

4.5 - 5.5

Front

In permanent waving, the size of the curl is determined by the _____________.

Back

Size of the rod

Front

The technique of wrapping hair at an angle of 90 degrees or perpendicular to its base section is _____________________.

Back

Half off-base placement

Front

The two basic types of wrapping the hair around a perm rod are the spiral and ______________.

Back

Croquignole perm technique

Front

A reduction reaction involves either the addition of hydrogen or the removal of _____________.

Back

Oxygen

Front

Most cold waves have a pH between _________________.

Back

9.0 - 9.6

Front

The three separate components of avid waves are permanent waving solution, activator, and ____________________.

Back

Neutralizer

Front

An endothermic wave is activated by __________________.

Back

An outside heat source

Front

Permanent wave solution should be rinsed from the hair for at least ____________________.

Back

5 minutes