Milady Chapter 20

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Test Review

Cuticle

Tough exterior layer of the hair

PH Scale has a range from

0-14

Chemical texturizers raise the PH of the hair to an alkaline state in order to _________and swell the hair shaft

soften

Amino Acids

compounds made up of carbon, hydrogen, oxygen, nitrogen, and sulfur

Keratin protein

long coiled polupeptide chanins

hydrogen bonds reform when

dry

shape and type of curl is determined by the

wrappiing method

straight rods are

equal in diameter

most control over the hair

double flat wrap

panels are

sections of hair

panels are divided into small subsections called

base sections

caution should be used to avoid additional

stress and tension

angle of rod

base direction

2 methods of wrapping the hair

croquignole and spiral

end to scalp

croquignole method

once in cortex waving solution breaks bonds

reduction

reduction is due to additon of

hydrogen

thioglycolic acid

most common reducing agent in permanent wave solution

active ingredient in alkaline

ammonium thioglycolate

mosst alkaline perm wave on the PH scale is

9.0-9.6

main active ingredient in tru acid waving lotion

glycerl monothioglycolate

all acid waves have 3 common compents

activators, waving solution, and neutralizer

most acid waves in salon

7.8-8.2

exothermic waves create an exothermic chemical reaction that heats up the waving solutiion and speeds up the________

processing

activated by an outside heat source, usually a conventional hood-type hair dryer

endothermic

if too many diulfied bonds are broken

the hair will not have enough strenght left to hold the desired curl

stops the action of the waving solution and rebuilds the hair into its new curly form

thio neutralization

premilary test provides the following information

correct processing time for the best curl to develop, results you can expect from the type of perm solution you have selcted, curl results for the rod size and wrapping technigue you are planning to use.

basic perm wrap aka

straight set wrap

prevent noticble splits and to blend the flow of the hair

bricklay permanent wrap

double rod wrap aka

piggyback wrap

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