In 1926, the croquignole method of wrapping hair from the ends to the scalp was created. What is another name for this wrapping method?
What is Overlap Method
Hair density does not always correspond to which of the following?
texture
What is applied to a client's hairline prior to the chemical phase of the perm service?
Protective cream
What reduces the swelling of the hair and re-hardens the bonds in the new shape during a perm process?
applying a neutralizer
Overprocessed hair could be indicated by hair that may look
curly when wet but frizzy when dry
In what year was the first cold wave created
1970
On base control is not recommended for alkaline perms since expansion is limited at the base and
tension may cause breakage
What are the two general perm solutions used in the salon
Alkaline and acid
Heat waves that are self-timed and self-heated and range from acid to alkaline are called
exothermic
What could be the cause of a perm not lasting as long as expected
incomplete neutralization
What length of hair was Charles Nessler's heat permanent waving machine suitable for?
Long
During a perm service, when is it important to replace cotton around the hairline
When it becomes saturated
Never perm hair that has been treated with metallic salts or a
sodium hydroxide relaxer
In alkaline perms, the perm solution chemically breaks or reduces the
Strong disulfide bonds
What could be the cause of weak or limp curls following a perm service?
underprocessing
What was the active ingredient used in the first cold wave?
thioglycolate acid
What are the two basic techniques for wrapping hair around a rod
Overlap and Spiral
The following illustration indicates which tool position? 
Half off base
Proper draping procedures for chemical services accomplish all of the following EXCEPT:
protecting the client's hair
What is the most likely cause of underprocessed hair?
perm solution not left on the hair long enough
Acid perms are in the pH range of
6.9-7.2
What do low- or no-thio perms use as a reducing agent
cystemine hydrochloride
If perm solution comes in contact with the client’s eyes or skin, which of the following actions should be taken?
rinse thoroughly with tepid water
What are the 5 perm procedures?
Section
Wrap
Apply
Neutralize
Too much hair wrapped on the perm rods can cause
an uneven curl pattern