Perms
The ______ is the middle layer of the hair, located beneath the cuticle layer
The _____ layer is the tough exterior layer of the hair
What is cuticle?
The ______ is often called the pith or core of the hair
What is Medulla?
Fine hair may not contain
What is medulla?
What does pH mean
What is Potential Hydrogen?
What is below 7
Alkaline substance has a pH of
What is the natural pH of hair?
What is between 4.5-5.5
How long should you rinse hair after you apply perm solution
Amino Acids
Always ____ the hair after the recommended rinsing time
True or False: Ammonia-free waves will not damage hair, even if used incorrectly
What is false
True or False: when rinsing hair you should always use hot water
False should use luke warm water
Which type of bond is the strongest of the three side bonds>
What is Disulfide bonds
What are salt bonds broken by
what is water?
Say the full name for ATG
what is Ammonium thioglycolate
say the full name for GMTG
what is glyceryl monothioglycolate
The most common neutralizer is
What is hydrogen peroxide
What type of change is it when you apply permanent waving solution and neutralizer
What is Chemical Change
What type of change happens when you wrap the hair on perm rods
End papers or end wraps are thin absorbent papers used at the end of the hair also to have more
What is control?
Thio neutralization rebuilds the disulfide bonds by removing the _____ that was added by permanent waving solutions
What is hydrogen?
What test is effective for determining correct processing time
What is Preliminary Test Curl
Straight rods are equal in ______ along their entire length or curling area and uniform curl along the strand
What is Diameter
What type of liquid protein conditioner can be applied to the hair and dried under a warm dryer for 5 min or more prior to neutralization if hair is damaged
What is acidic?