Ch. 20 Chemical Texture Services Pt. 2 Flashcards

1
Q

What process permanently rearranges the basic structure of curly hair into straight or smooth form?

A

Chemical hair relaxing

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2
Q

The most common types of chemical hair relaxers are ammonium thio, guanidine hydroxide, and:

A

sodium hydroxide

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3
Q

The measurement of the thickness or thinness of a liquid that affects how the fluid flows is known as:

A

viscosity

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4
Q

Before giving a relaxing treatment to curly hair, the cosmetologist must perform an analysis of the client’s hair and scalp, testing for porosity and_____________on several areas of the head.

A

elasticity

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5
Q

In _____________, the process by which hydroxide relaxers permanently straighten hair, the relaxers remove a sulfur atom from a disulfide bond and convert it into a lanthionine bond.

A

lanthionization

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6
Q

Relaxers that are ionic compounds formed by a metal combined with oxygen and hydrogen are known as:

A

metal hydroxide relaxers

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7
Q

Sodium hydroxide relaxers are commonly called:

A

lye relaxers

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8
Q

The action of a guanidine hydroxide, or no-lye, relaxer causes the hair to:

A

soften and swell

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9
Q

_____________relaxers are intended for use on color-treated, damaged, or fine hair.

A

Low-pH

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10
Q

Hydroxide relaxers are usually sold in___________formulas.

A

base and no base

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11
Q

The scalp and skin are protected from possible burns when using a base hair relaxer by applying:

A

base cream

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12
Q

Application of the relaxer for a retouch begins in the most resistant areas, usually at the back of the head or:

A

under the occipital bone

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13
Q

If using a “no base” relaxer, a protective cream may be applied:

A

to the hairline and around the ears

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14
Q

General guidelines suggest that for fine, color-treated, or damaged hair, a _____________strength relaxer should be used.

A

mild

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15
Q

General guidelines suggest that for coars, extrememly curly, and resistant hair, a ___________strength relaxer should be used.

A

strong or super

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16
Q

Inspecting the action of the relaxer by smoothing and pressing the strand to the scalp is called:

A

periodic strand testing

17
Q

To check relaxer processing, smooth and press a strand to the scalp using the back of the comb or your finger. If the curl returns,__________

A

continue processing

18
Q

When applying hydroxide relaxer on virgin hair, the processing cream is applied last to the______and ______.

A

scalp area, hair ends

19
Q

The product is applied first to the__________when performing a sodium hydroxide retouch.

A

new growth only

20
Q

What product is used to restore the hair to a normal acidic pH?

A

Normalizing lotion

21
Q

The best type of shampoo to use after the chemical relaxer is a:

A

neutralizing shampoo

22
Q

A hair relaxing treatment should be avoided when an examination shows the presence of;

A

scalp abrasions

23
Q

Of the general types of hair relaxers, which one does not require pre-shampooing?

A

Sodium hydroxide

24
Q

What is one safety precaution that must be followed with all chemical hair relaxing services?

A

Wearing protective gloves

25
Q

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

A

scratching

26
Q

After the hair has been processed with a relaxer and before the shampoo, the hair should be thoroughly:

A

rinsed

27
Q

When hair has been sufficiently straightened, the hair is rinsed rapidly and thoroughly with:

A

warm

28
Q

Keratin straightening treatments work by fixing the keratin in place in a __________manner: they do not break bonds.

A

semi-permanent

29
Q

A________is a thio-based chemical service that re-formats curly and wavy hair into looser and larger curls and waves.

A

soft curl perm

30
Q

When using the comb method of application, how is the relaxing cream applied?

A

with the back of the comb

31
Q

After saturating the rods with neutralizer in a soft curl permanent and processing according to manufacturer’s directions, the next step is to:

A

rinse with the rods still in the hair

32
Q

When processing is complete for a soft curl perm, what is done after rinsing the hair thoroughly with warm water?

A

Conditioner is applied