What tough exterior layer of the hair has the purpose of surrounding the inner layers and protecting the hair from damage?

Chapter 15 Permanent Wave

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Life Skills
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University
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Hard
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1.
FLASHCARD QUESTION
Front
Back
Cuticle
2.
FLASHCARD QUESTION
Front
Which layer of the hair is located directly beneath the cuticle layer and is responsible for the incredible strength and elasticity of human hair?
Back
Cortex
3.
FLASHCARD QUESTION
Front
Which layer of hair is the innermost layer of the hair, and often called the pith or core of the hair?
Back
Medulla
4.
FLASHCARD QUESTION
Front
The term pH is an abbreviation used for potential ____, and the symbol pH represents the quantity of ____ ions in solution.
Back
hydrogen; hydrogen
5.
FLASHCARD QUESTION
Front
The range of numbers used in the pH scale is ____.
Back
0 to 14
6.
FLASHCARD QUESTION
Front
Chemical hair texturizers temporarily raise the pH of the hair to an alkaline state in order to ____.
Back
soften and swell the shaft
7.
FLASHCARD QUESTION
Front
The neutralizing solution for a perm processes for how long?
Back
5 minutes
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