Hair and Permanent Waving Quiz

What tough exterior layer of the hair has the purpose of surrounding the inner layers and protecting the hair from damage?

• Hair shaft

• Cuticle

• Cortex

• Medulla

What determines the size of the curl in a permanent waving process?

• The size of the rod

• The length of the hair

• The texture of the hair

• The color of the hair

In permanent waving, the shape and type of curl are determined by the shape and type of rod and the _____.

• long rods

• hair length

• sectioning

• wrapping method

The active ingredient or reducing agent in alkaline permanent waves is _____.

• ammonium thioglycolate

• hydrogen thioglycolate

• alkaline acids

• glyceryl monothioglycolate

What is the main active ingredient in true acid and acid-balanced waving lotions?

• Glyceryl monothioglycolate

• Ammonium thioglycolic

• Sodium hydroxide

• Sodium hydrochloride

Exothermic waves create a chemical reaction that heats the waving solution and speeds up

• True

• False

Waves that are activated from an outside heat source, such as a conventional hood-type hair dryer, are _____ waves.

• stabilized

• endothermic

• exothermic

• acid

_____ waves are permanent solutions based on sulfites, considered very weak, and are usually marketed as body waves or alternative waves.

• Endothermic

• Exothermic

• Ammonia-free

• Low-pH

Hair that has too many broken disulfide bonds and will not hold a firm curl is considered _____.

• underprocessed

• overprocessed

• under neutralized

• tinted

Over processed hair that is further processed will become _____ and cause further damage, including breakage.

• shorter

• straighter

• curlier

• tinted