Cosmetology Chapter 20

A _______________ is an example of a physical change that results from breaking and reforming the hydrogen bonds within the hair.

• damp set

• chess set

• wet set

• dry set

In the croquignole method of wrapping, the hair is wound from

• scalp to ends

• longest to shortest

• ends to scalp

• shortest to longest

Once in the cortex, the waving solution breaks the disulfide bonds through a chemical reaction called

• rearranging

• normalization

• reduction

• alkaline

The most common reducing agents used are

• ammonia water

• hydrogen peroxide

• thioglycolic acids

• hydrogen acids

If too many _______________ bonds are broken in the perming process, the hair will be too weak to hold a firm curl.

• hydrogen

• salt

• disulfide

• peptide

End wraps are absorbent papers used to _______________ of the hair when wrapping and winding hair on the perm tools.

• control ends

• decorate

• flatten ends

• absorb smell

In neutralization, the bonds in the hair are re-formed _______________.

• slowly

• immediately

• the next day

• randomly

Sodium hydroxide relaxers are commonly called _______________.

• lye relaxer

• no lye relaxer

• simple relaxer

• perm

One safety precaution for hair relaxing is to avoid _______________ the scalp with the comb or fingernails.

• neutralizing

• flat ironing

• looking at

• scratching

The action of a sodium hydroxide relaxer causes the hair to _______________.

• swell

• shrink

• harden

• fall out