Chapter 20-Chem Services Flashcards
The chemical texture service that loosens overly curly hair into loose curls or waves is:
Curl re-formation
The layer of the hair that provides strength and elasticity is the:
Cortex
The natural pH of hair is:
5.0
In permanent waving the size of the curl is determined by the:
Size of the rod
The technique of wrapping at a 90° angle or straight out from the center is…
Half off base placement
The two basic types of wrapping hair around a perm rod are the spiral method and…
The Croquignole method
A reduction reaction involves either the addition of hydrogen or the removal of…
Oxygen
Most alkaline permanent waves have a pH between…
9.0 and 9.6
The basic components of acid waves are permanent wave solution, activator and…
Neutralizer
And endothermic wave must be activated using a (n)…
Outside heat source
Permanent wave solution should be rinsed from the hair for a minimum of…
Five minutes
The process of rearranging extremely curly hair into a straighter or smoother form is…
Chemical hair relaxing
Thio chemical relaxer’s usually have a pH value above…
10
Hydroxide ions left in a Hair after a relaxer can be neutralized using an…
Acid balanced shampoo
Which type of relaxer contains one component and is used without any additional mixing?
Metal hydroxide relaxers
Lithium hydroxide relaxers and potassium hydroxide relaxers are often advertised and sold as…
No lye relaxers.
Which type of bonds are relatively weak physical side bonds that are the result of an attraction between negative and positive electrical charges?
Salt bonds
Which type of rod is also commonly known as a circle rod?
Loop rods
For on-base placement the hair is wrapped at a_________Angle beyond perpendicular to its base section and the rod is positioned on its base.
45
True or false:
An ammonia free wave processes at room temperature.
True!
When should you perform an elasticity test?
before perming the hair
Do chemical texturizers raise or lower the pH of the hair?
Raise
True or false:
Porous hair cannot be damaged by a highly alkaline permanent waving solution.
False!
GMTG the primary reducing agent in all acid waves has a ______PH.
Low
True or false:
True acid waves require heat to process.
True.
True or false:
Ammonia free waves are not damaging.
False!
In permanent waving most of the processing takes place within…
The first 5 to 10 minutes
True or false
With permanent waving it is not necessary that you examine the scalp before the service
False.
With extremely curly hair the twists are the……… Sections of the hair strands.
Thinnest and weakest.
Relaxers are:
a. extremely alkaline
B. extremely acidic
c. mildly alkaline
d. mildly acidic
A: extremely alkaline
True or false:
If the clients hair has been treated with a hydroxide relaxer it will hold a curl.
False!
What is the name for a perm wrap in which one and paper is placed under and another is placed over the strand of hair being wrapped?
Double flat wrap
Which type of rods are usually about 12 inches long with a uniform diameter along the entire length?
Soft bender rods
True or false:
Thioglycolic acid is a common reducing agent.
True!
What is the innermost layer of the hair called?
Medulla.
The partings and bases radiate through out the panels to follow the curvature of the head in which type of wrap?
Curvature permanent wrap
The chemical bonds that join amino acids together are called?
Peptide bonds
Which type of perm is wrapped with the hair wrapped at an angle other than perpendicular to the length of the rod?
Spiral perm wrap.
Which method is used to straighten hair combining the use of a thio relaxer with flat ironing?
Japanese thermal straightening
Which type of relaxer requires the application of a protective base cream to the entire scalp prior to the application of the relaxer?
Base relaxer
The middle layer of the hair is the:
Cortex
What is the term that refers to the angle at which the rod is positioned on the head?
Base direction
What is the name of the wrap that uses one end paper folded in half over the hair and like an envelope?
Bookend
What is the name of the wrapping pattern in which all the rods within a panel move in the same direction and are positioned on equal sized bases?
Basic perm wrap
Which of these are commonly known as lye relaxers?
A. metal hydroxide relaxers
B. Carbonate hydroxide relaxers
C. Sodium hydroxide relaxers
D. Iron hydroxide relaxers
C. Sodium hydroxide relaxers
Which perm rods are equal in diameter along the entire length or curling area?
Straight rods
What is the term that refers to the thickness or thinness of a liquid?
Viscosity
What is the name of the tough exterior layer of the hair?
Cuticle
What is the term that refers to the position of the rod in relation to its base section?
Base placement
What is the name of the type of wrap in which the hair is wrapped on one rod from the scalp to midway down the hair shaft?
Piggyback wrap
What solution stops the action of the waving solution and rebuilds the hair into its new curly form?
Thio neutralization
Long chains of amino acids joined together by peptide bonds are known as…
Polypeptide chains
The process by which hydroxide relaxers permanently straighten hair is called…
Lanthionization
Hydrogen bonds can be broken by…
Either water or heat
The reducing agent used in permanent waving solutions is commonly referred to as…
Thio
Manufacturers add an alkalizing agent to weaving solutions because the acid in them…
A swells the hair
B. Penetrates into the cortex
C. Both swells the hair and penetrates into the cortex
D. Neither swells the hair nor penetrates into the cortex
D. Neither swells the hair nor penetrates into the cortex
True or false
A pH of seven is 100 times more alkaline than the pH of hair.
True
Most of the acid waves found in today’s salons have a pH between…
7.8 and 8.2
What are the three main components of an exothermic wave?
Permanent waving solution
Neutralizer
Activator
What is the most common neutralizer?
Hydrogen peroxide
You should always smell the hair after the recommended time has elapsed after rinsing a permanent wave.
True or false
True
True or false
Japanese thermal straightening is sometimes called thermal reconditioning
True
Mild strength relaxers are formulated for…
Fine, color treated, or damaged hair
What is the temporary bond that forms when sodium hydroxide is rinsed from the hair?
Lanthionization
