Flashcards in Chemical Hair Relaxing Deck (56)
List two other names for chemical hair processing?
Name the two general types of hair relaxers.
A. Ammonium thioglycolate
B. Sodium hydroxide
What is the two main differences between the two types of relaxers?
Thio requires shampooing before & sodium hydroxide you do NOT shampoo before.
What is the pH of sodium hydroxide hair relaxer?
What is the protective cream for the scalp and previously straightened hair?
Petroleum cream (not jelly)
List the two types of sodium hydroxide hair straightener.
A. Base ( protective cream on scalp)
B. No base ( protective cream around the perimeter of scalp)
What takes place during the processing phase of hair straightening.
When chemical relaxer is applied the hair begins to soften, the chemical penetrates the hair to loosen and relax its natural curl
Which of the two hair straighteners used professionally is less drastic?
List the two other names for the neutralizer.
What two functions does the neutralizer perform during the hair straightening process?
Reforms the cystine (sulfur) cross bonds & re hardens the hair.
What step must be taken before relaxing hair that has been damaged by heat appliances or other chemicals?
A series of reconditioning treatments
How is the strength of the relaxer used determined?
A chemical hair straightener should never be done on hair that has been treated with what?
Lighteners or metallic dyes
List four conditions that could show up during the scalp exam that would prevent any type of chemical hair relaxer from being used.
Eruptions, scratches, contagious condition, or abrasions
List four tests that must be done before starting a hair straightening.
A. Scalp exam
B. Finger test (porosity)
C. Pull test (elasticity)
D. Relaxer test
List two things that should not be done immediately prior to a hair straightening.
Shampooing (before sodium hydroxide relaxer) or thermal appliance treatments
What type of conditioner is used before relaxing over-porous hair or slightly damaged hair.
Which bonds in the cortex layer of the hair must be broken in order to chemically relax overly curly or wavy hair.
Cystine / disulfide / sulfur bonds
How is the hair held in the straight position during the processing and neutralizing phases of chemical hair processing?
How is the hair relaxer applied to the hair shaft?
It's laid upon the hair w/ the back of the comb
Where should you start applying the chemical hair relaxer?
On the shaft
List four areas that the hair relaxer must not come in contact with as its being applied.
(1/2" from ends and scalp)
What area of the hair shaft does not receive the relaxer when it is first being applied?
Which two areas is the hair relaxer applied to last?
Front hair line
What type of comb is used for spreading out the hair relaxer?
Wide tooth comb
What temp of water must be used for rinsing out the hair relaxer?
Warm / tepid, not hot or cold
While rinsing the relaxer from the scalp, the water must be directed away from what?
What type of shampoo is recommended after a hair relaxer?
What position should the hair be kept in while it is being neutralized?