A
Which end paper technique uses one end paper folded in half over the hair ends like an envelope?
bookend
Compounds consisting of carbon, oxygen, hydrogen, nitrogen, and sulfur are:
amino acids
The double-rod wrap technique is especially effective on _____ hair.
long
The side bonds of the _____ must be broken in order to change the natural wave pattern of the hair.
cortex
Which type of metal is NOT commonly used to form ionic compounds in metal hydroxide relaxers?
sodium (Na) magnesium (Mg)
lithium (Li) potassium (K)
magnesium (Mg)
Which straightening method combines use of a thio relaxer with flat ironing?
Japanese thermal straightening
What is the active ingredient in alkaline permanents?
ammonium thioglycolate
A pH of _____ is neutral for hair.
5
Cold wave is another term for a(n) _____ wave.
alkaline
The reduction reaction in permanent waving is due to the addition of?
hydrogen
For _____ placement, the hair is wrapped at a 45-degree angle beyond perpendicular to its base section, and the rod is positioned on its base.
on-base
In permanent waving, the size of the curl is determined by the:
size of the rod
A _____ is a thio-based chemical service that reformats curly and wavy hair into looser and larger curls and waves.
soft curl permanent
The strongest of the three side bonds are the?
disulfide bonds
What is the primary benefit of ammonia-free waves?
they do not have a strong smell
When the silicone polymers and formalin in keratin-based straightening treatments are heated to high temperatures, they release:
formaldehyde gas
Generally, keratin straightening treatments eliminate up to what percent of frizz and curl?
95%
A super-strength relaxer is recommended if the client has _____ hair.
extremely curly
will accept resistant, but extremely curly is test answer ;P
A _____ is a conditioner with an acidic pH that conditions hair and restores the natural pH prior to shampooing.
normalizing lotion
Disulfide bonds account for about _____ of the hair's overall strength.
1/3
Hydroxide relaxers remove one atom of sulfur from a disulfide bond, converting it into a _____ bond.
lanthionine
Is it recommended that you apply base cream when using base relaxers, or no base relaxers?
both
Which method of wrapping provides the most control over the hair ends?
double flat wrap
Hydrogen bonds can be broken by:
water or heat
The most common type of perm rod is the:
concave rod