Milady Chapter 20 Perms & Relaxers Exam Questions With 100% Correct Answers
Chemical Texture Services -ANSWER are hair services that cause a chemical change that alters the natural wave pattern of the hair
Permanent Waving -ANSWER Adding wave or curl to hair
Relaxing -ANSWER ...
Milady Chapter 20 Perms &
Relaxers Exam Questions
With 100% Correct
Answers
Chemical Texture Services -ANSWER are hair services that cause a chemical
change that alters the natural wave pattern of the hair
Permanent Waving -ANSWER Adding wave or curl to hair
Relaxing -ANSWER removing curl, leaving the hair smooth and wave-free
Curl Re-Forming -ANSWER soft curl permanents loosening overly curly hair such as
when tight curls and turned into loose curls or waves.
Hair Structure -ANSWER Cuticle, Cortex and Medulla
Cuticle -ANSWER Tough exterior layer of the hair (is not directly involved in the
texture or movement of the hair)
Cortex -ANSWER Middle layer of te hair located directly beneath the cuticle layer (is
responsible for the incredible strength and elasticity of human hair)
Medulla -ANSWER Inner layers of the hair (does not play a role in chemical texture
sevices)
pH -ANSWER Potential Hydrogen
pH Scale -ANSWER 0 - 14
Acid -ANSWER 0 - 6.9
Neutral -ANSWER 7
Alkaline -ANSWER 7.1 - 14
Natural pH of Hair -ANSWER 4.5 - 5.5
, Chemical Texturizers -ANSWER raise the pH of the hair to an alkaline state in order
to soften and swell the hair shaft
Sotfen in hair -ANSWER opens the cuticle layer and allows the solution to reach the
cortex layer
Damaged hair -ANSWER needs less alkaline
Building blocks of hair -ANSWER Amino Acid, Peptide bonds, Polypeptide chains,
Keratin Proteins, Side bonds
Amino Acid -ANSWER are compounds made up of carbon, oxygen, hydrogen,
nitrogen and sulfur
Peptide bonds (end bonds) -ANSWER are chemical bonds that join amino acids
together
Polypeptide chains -ANSWER are long chains of amino acids joined together by
peptide bonds
Keration proteins -ANSWER are long, coiled polypeptide chains
Side Bonds -ANSWER are disulfide, salt and hydrogen bonds that cross-link
polypeptide chains together
Cortex -ANSWER is made up of millions of polypeptide chains cross-linked by three
types of side bonds (disulfide, salt and hydrogen)
Disulfide Bonds -ANSWER Strong chemical side bonds formed when the sulfur
atoms in two adjacent protein chains are joined together (the strongerst of the 3 side
bonds, accounting for about 1/3 of the hairs overall strength) (The chemical physical
changes in disulfide bonds make permanent waving, curl-reforming and relaxing
possible)
Salt Bonds -ANSWER are relatively weak physical side bonds that are the resultof
an attraction between negative and positive eletrical charges (easily broken by changes
in pH and they re-form when the pH returns to normal) (1/3 of the hairs strength)
Hydrogen bonds -ANSWER are weak physical side bonds that are also result of an
attraction between opposite electrical charges (can be broken by water or heat) (re-form
as the hair dries or cools) (1/3 of the hairs strenght)
Permanent Wave alters -ANSWER the side bonds only when done correctly
Permanent Waving -ANSWER is a 2-step process, the hair undergoes a physical
changes caused by wrapping the hair on perm rods and then the hair under goes a
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