The lower part of the hair bulb is hollow and fits over the:

Which of the following contains the blood and nerve supply that provides the nutrients needed for hair growth?

Overactive sebaceous glands that secrete too much sebum can cause what type of scalp condition?

Hair follicles are distributed all over the body, with the exception of the palms of the hands and the:

The outermost layer of the hair is the:

What percentage of the total weight of the hair comes from the cortex?

What layer of hair may be absent in very fine and naturally blonde hair?

A healthy, compact cuticle layer is responsible for the __________ of the hair.

The cortex's unique __________ provides strength, elasticity, and natural color to the hair.

Protein is made of chemical units called:

The hair shaft is a nonliving fiber composed of:

The spiral shape of a coiled protein is called a:

What type of a side bond is a weak, physical, cross-link side bond that is easily broken by water or heat?

A salt bond is a weak, physical side bond, which cross-links the polypeptide chains, but it reacts to changes in:

Disulfide bonds are broken by:

Natural hair color is the result of the __________ found within the cortex.

Natural hair wave patterns are the result of:

What type of hair often has low elasticity, breaks easily, and has a tendency to knot, especially on the ends?

The more disulfide bonds in the hair, the more resistant it will be to:

During what cycle of hair growth is new hair grown?

A __________ is a tuft of hair that stands straight up.

What type of hair is the long, coarse hair found on the scalp, legs, arms, and bodies of males and females?

What is the average growth rate of healthy hair on the scalp per month?

Which of the following has been scientifically proven to increase hair growth?

When two hair streams slope in opposite directions, they form:

Grey hair is the same as pigmented hair except for:

How often are eyebrow hairs and eyelashes replaced?

During what hair growth phase does the follicle shrink, the hair bulb disappear, and the shrunken root end form a rounded club?

Scalp massages:

Which of the following is an autoimmune disorder that causes the affected hair follicles to be mistakenly attacked by the person's own immune system?

What type of alopecia is male pattern baldness, which usually progresses to the familiar horseshoe-shaped fringe of hair?

A sensitive topic that you can speak to your client about is:

Almost 40 percent of men and women show some degree of hair loss by what age?

Clients who exhibit symptoms of __________ should be referred to a physician.

Which of the following is a topical treatment that has been proven to stimulate hair growth?

A side effect of finasteride is:

Acquired canities develops with age and is the result of:

Which of the following is a condition of abnormal growth of hair?

Monilethrix is the technical term for:

The only way to remove split ends is to:

Tinea is the medical term for:

What is a characteristic of scabies?

Classic dandruff is characterized by:

Tinea barbae is a superficial fungal infection caused by dermatophytes occurring chiefly over the:

__________ is a chronic bacterial infection involving the areas surrounding the follicles of the beard and mustache areas.

Which of the following can be caused by improper shaving or by broken hair below the skin surface that grows into the side of the follicle?

Folliculitis is the result of bacterial or viral infection and is characterized by:

Dandruff is the result of:

The term __________ is applied most frequently to a folliculitis barbae condition.

Which of the following is the result of an acute, deep-seated bacterial infection in the subcutaneous tissue?

Preparations that contain salicylic acid to break up impactions and kill bacteria are available for the prevention of:

Do not proceed with __________ services if there are signs of irritation or abrasions.

What type of hair is more susceptible to damage from chemical services?

The number of hairs on the head varies with the __________ of the hair.

What type of hair has a hard, glassy finish because the cuticle scales lie flat against the hair shaft?

Hair that breaks easily or fails to return to its normal length:

Hair with a high porosity level is considered overly porous and is usually the result of:

The sense of __________ is key to analyzing hair condition and texture.

It is more difficult for hair lighteners, haircolors, waving solutions, and relaxing creams to penetrate what type of hair?

The degree of hair porosity is directly related to the condition of:

Hair __________ refers to the degree of coarseness or fineness of individual hair strands.

Hair with low or poor elasticity is:

What would hair be considered if it feels smooth and the cuticle is compact?

Hair with normal elasticity will stretch and return to its original length without:

The average hair density is approximately how many strands per square inch?

Hair with low or poor elasticity may be the result of: