Ch. 11 Properties Hair & Scalp

Hydroxide chemical relaxers break disulfide bonds and convert them to _____ bonds.

• lanthionine
• sulfur
• carbon
• hydrogen

All natural hair color is the result of pigment called _____.

• melanin
• tissue
• sebum
• proteins

The pigment that provides brown or black color to hair is _____.

• ionic
• eumelanin
• pheomelanin
• telogen

What pigment in hair provides natural colors ranging from red and ginger to yellow and blond tones?

• Eumelanin
• Neuromelanin
• Pheomelanin
• Keratin

What term refers to the shape of the hair strand?

• Whorl
• Cowlick
• Hair stream
• Wave pattern

What is the cross-section shape of curly hair?

• Hexagonal
• Round
• Rectangular
• Oval

Vellus hair is also known as _____ hair.

• straight
• melamine
• lanugo
• terminal

What type of hair is short, fine, unpigmented, and downy?

• Vellus hair
• Terminal hair
• Androgenic hair
• Feathered hair

What are the three growth cycles of human hair?

• Anagen, growth phase, and telogen
• Catagen, return, and transition
• Anagen, catagen, and telogen
• Anagen, transition, and mature

What is the growth phase during which new hair is produced?

• Genesis
• Telogen
• Anagen
• Catagen