Chapter 20 Chemical Hair Texture

_____ give you the ability to permanently change the hair’s natural wave and curl pattern, thereby offering clients a variety of styling options that would not otherwise be possible.

• Chemical hair softening

• Chemical texture services

• Natural hair services

• Alternative texture services

Without a thorough understanding of _____, cosmetologists could damage hair, cause hair loss, and harm their clients and themselves.

• chemistry

• immunology

• color theory

• branding

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

• Hair shaft

• Cuticle

• Cortex

• Medulla

Which layer of the hair is located directly beneath the cuticle layer and is responsible for the incredible strength and elasticity of human hair?

• Hair shaft

• Cuticle

• Cortex

• Medulla

Which layer of hair is the innermost layer of the hair, and often called the pith or core of the hair?

• Hair shaft

• Cuticle

• Cortex

• Medulla

The term pH is an abbreviation used for potential _____, and the symbol pH represents the quantity of _____ ions in solution.

• hydrogen; hydrogen

• Hydrogen; oxygen

• Oxygen; Oxygen

• Oxygen; nitrogen

The _____ measures the acidity and alkalinity of a substance by measuring the quantity of hydrogen ions it contains.

• oxygen content

• PH scale

• Salinity

• Radioactivity Level

The range of numbers used in the pH scale is _____.

• 0 to 5

• 0 to 7

• 0 to 10

• 0 to 14

Chemical hair texturizers temporarily raise the pH of the hair to an alkaline state in order to _____.

• expand and harden the shaft

  b. harden and close the shaft

  c. swell and set the shaft

  d. soften and swell the shaft

• Harden and close the shaft

• swell and set the shaft

• Soften and swell the shaft

In the restructuring process, coarse, resistant hair with a strong compact cuticle requires a chemical solution that is _____.

• slightly alkaline

  b. mildly acidic

  c. strongly acidic

  d. highly alkaline

• Mildly acidic

• Strongly Acidic

• Highly Alkaline