Merry
Guanidine hydroxide relaxers are advertised and sold as _____ relaxers.
metal hydroxide
lye-based
low-pH
no-lye
no lye
What is used to protect the skin and scalp during hair relaxing?
hydrogen peroxide
waving lotion
normalizing lotion
base cream
Base Cream
The application for a virgin relaxer starts _____ away from the scalp.
1-1/2 inch to 2 inches
1 inch to 1-1/2 inches
1/4-inch to 1/2-inch
3/4-inch to 1 inch
1/4/ to 1/2 inch
A _____ is a thio-based chemical service that reformats curly and wavy hair into looser and larger curls and waves.
Japanese thermal straightener
soft curl permanent
hydroxide relaxer
bricklay permanent wrap
Soft curl permanent
Generally, keratin straightening treatments eliminate up to what percent of frizz and curl?
95 percent
80 percent
40 percent
65 percent
95 Percent
The side bonds of the _____ must be broken in order to change the natural wave pattern of the hair.
Cortex
medulla
pith
cuticle
Cortex
Which type of hair requires a highly alkaline chemical solution?
hair that has been chemically treated
damaged hair
coarse, resistant hair
porous hair
Coarse, resistant hair
Polypeptide chains are long chains of amino acids joined together by _____ bonds.
hydrogen
salt
disulfide
Peptide
Peptide
Hydrogen bonds can be broken by:
heat or changes in pH
water or cooling
water or heat
cooling or changes in pH
Water or heat
Disulfide bonds account for about _____ of the hair's overall strength.
one-eighth
one-quarter
one-half
one-third
one third
The base direction can be:
horizontal, vertical, or diagonal
diagonal or horizontal
horizontal or vertical
vertical or diagonal
Horizontal vertical diagonal
The reduction reaction in permanent waving is due to the:
addition of oxygen
addition of hydrogen
removal of hydrogen
removal of oxygen
addition of hydrogen
Which of these is NOT a component of all exothermic waves?
neutralizer
activator
hydroxide relaxer
permanent waving solution
Hydroxide Relaxer
Which type of metal is NOT commonly used to form ionic compounds in metal hydroxide relaxers?
lithium (Li)
magnesium (Mg)
sodium (Na)
potassium (K)
Magnesium (mg)
When the silicone polymers and formalin in keratin-based straightening treatments are heated to high temperatures, they release:
methane
chlorine gas
formaldehyde gas
water vapor
Formaldehyde gas
An acid-balanced wave has a pH of:
9.5
8.0
5.5
7.0
7.0
Which type of perm should you recommend if the client has very damaged hair?
thio-free wave
ammonia-free wave
alkaline wave
true acid wave
true acid wave
Underprocessed hair is usually:
moderately curly at both the scalp and the ends
straight at both the scalp and the ends
straighter at the scalp and curlier at the ends
curlier at the scalp and straighter at the ends
straighter at the scalp and curlier at the ends
Overprocessed hair:
requires further processing
occurs when too many disulfide bonds are broken
usually has a strong curl pattern
is usually straighter at the scalp and curlier at the ends
occurs when too many disulifide bonds are broken
The first function of thio neutralization is the:
removal of hydrogen
reformation of side bonds
deactivation of any remaining waving lotion
rebuilding of disulfide bonds
deactivation of any remaining waving lotion
How long is a typical soft bender rod?
12 inches
6 inches
2 inches
3 inches
12 inches
Which method of wrapping provides the most control over the hair ends?
double bookend wrap
bookend wrap
double flat wrap
single flat wrap
double flap wrap
With the _____, base sections are offset from each other row by row.
bricklay permanent wrap
basic permanent wrap
curvature permanent wrap
weave technique
Bricklay permanent wrap
The _____ uses zigzag partings to divide base areas.
curvature permanent wrap
basic permanent wrap
bricklay permanent wrap
weave technique
Weave technique
The double-rod wrap technique is especially effective on _____ hair.
damaged
porous
Long
Short
long