chemical relaxing exam Flashcards
types of curl and strength location
weakest at the twists
another word for sodium hydroxide
lye relaxers
dose the neutralization of hydroxide relaxer involve oxidation
no
do relaxers contain the same ingredients as a perm
depilatories, yes
are the reactions the same between permanent waving and chemical relaxing the same
yes
hydroxide relaxer compatible with thio relaxers, and soft curl perms
no
where to put protective cream
not on hair ( weaken solution ) but on hairline
should a client shampoo before applying a hydroxide relaxer
no
can you relax metallic coloured hair
no
what is viscosity
it’s a liquids ability to pour ( how thick or thin )
what a strand test
test a piece of hair to see how it will react
neutralizer
stop the chemical reaction from happening and put the bond back together
ph of hair
4.5 5.5
ph of hydroxide relaxers
13 or higher
two most common types of chemical relaxing
thio and lye
different strengths of relaxers and when do you use them
mild: fine, coloured treated, damaged ( some wave might be left in the hair
regular: most common, normal hair texture, medium natural curl
super: very corse hair, maximum strength
the active ingredients in hydroxide relaxer
hydroxide ion
what an acid balanced shampoo will do
neutralize any remaining hydroxide ions to a lower the ph of the hair and scale
Hair Relaxation Procedure
- Section hair into 4 quadrants
- Choose product according to hair condition
- Apply reducer starting at nape – ¼” to ½” sections staying ½” away from scalp
- Development time – 15-35 min depending on hair condition
- Rinse 5-10 min
- Blow dry – 80%
- Flat iron – 1/8” to ¼” sections
- Section hair – 4 sections
- Apply neutralizer beginning at nape – ¼” to ½” sections staying ½” away from scalp
- Smooth hair with gloved fingers to keep in straightened state
- Development time – 10 min
- Rinse 5-10 min
- Blow dry
14 .Flat iron - Do not wash, tuck or use elastics in hair for up to 48 hours for best results
