COS I: Review for Final Exam 2025

Column 1

100

• The study of hair is known as ______________________.

What is Trichology?

200

• What small involuntary muscle is attached to the underside of a hair follicle?

What is the arrector pili muscle?

300

• The three main layers of the hair shaft are the __________________________.

What is the cuticle, cortex and medulla?

400

• What substance in the cortex gives natural color to the hair?

What is melanin?

500

• Long coarse, pigmented hair found on the scalp, legs, arms, and body is known as ________________.

What is terminal hair?

600

• What is the focus in a design that draws the eye first before it travels to the rest of the design?

What is emphasis?

700

• What comb is 6-8 inches in length?

All purpose comb

800

• The widest area of the head starting at the temples and ending at the bottom of the crown, is known as the _____________________.

what is the Parietal Ridge

Column 2

100

• All hair follicles have the same structure and cycle through the same three phases, which are ______________________

What is anagen, catagen and telogen?

200

• The loss of hair in round or irregular patches without inflammation is known as _________________.

What is alopecia areata?

300

• The number of individual hair strands on one square inch of the scalp indicates that _____________________.

What is density?

400

• Organic chemistry is the study of all substances containing _________________

What is carbon?

500

• Everything known to exist in the universe is either made of matter or ___________, which does not occupy space or have mass.

What is energy?

600

• To measure facial ________________, divide the face into four equal parts

What is symmetry?

700

• When you cut below your fingers you are cutting a _____________ cut.

blunt

800

• 
  
• The highest point of the head is known as the __________________.

What is the apex?

Column 3

100

All matter exists in one of three different physical forms: solid, liquid, and

What is a gas?

200

Nail polish contains glitter is an unstable physical mixture of undissolved particles in a liquid, which is known as a (n

What is suspension?

300

• All the appliances you use should be _____________________.

What is UL Certified?

400

• _____________________ lines extend parallel to the floor or horizon and are used to create width in hair design.

What are horizontal lines?

500

Horizontal lines and vertical lines that meet at a 90-degree angle are called

What are contrasting lines?

600

• Dark and cool colors recede or move in toward the head, creating the illusion of _____________.

What is less volume?

700

• 
  
• When you are cutting palm to palm you are cutting a _________________ cut.

What is layered

800

• The area of the head between the apex and the back of the parietal ridge is known as the ________________

What is the crown?

Column 4

100

• Which face shape is considered to be ideal?

what is oval?

200

• Hairstyles using _________________are best on clients who require a minimum of care when styling their hair.

single lines

300

• The two basic requirements for a healthy scalp are cleanliness and _____________________.

What is stimulation

400

• Water is called the ______________________solvent because it can dissolve more substances than any other solvent.

Universal

500

• The main ingredient in most shampoos is _____________.

water

600

A shampoo that is balanced to the pH of skin and hair or 4.5 to 5.5 is known as

What is pH balanced

700

• When you want to take out big sections of hair during texturizing, you should use a ________________ shear.

Chunking Shear

800

• The angle or degree at which a subsection of hair is held or elevated from the head when cutting is called ___________________.

What is elevation

Column 5

100

• Which type of shampoo should be used to eliminate excessive buildup in the hair because it contains and active chelating agent that binds to metals and removes them from the hair before equalizing?

What is clarifying

200

• What type of shampoo is used on an oily hair and calp, washing away excess oiliness while keeping the hair from drying out?

what is balanced

300

• Conditioners designed to penetrate the cortex and reinforce the hair shaft from within are called ________________conditioners.

What is protein 

400

• What are haircutting scissors professionally known as?

Shears

500

• What tool is a Cosmetologist not allowed to use in TN?

What is a straight razor?

600

• What tool gives a blunt edge in a haircut?

What are shears?

700

• Never cut past your second__________.

Knuckle

800

• What is the section of hair called that you use to determine the length of the hair
• that will be used throughout the cut.

What is guideline