An appendage of the skin in the form of a slender, threadlike outgrowth
What is hair?
100
Color pigment that is found in the cortex of the hair.
What is melanin?
100
This is the term used to describe the time used to analyze the client's hair and scalp and to determine the client's desired results.
What is a consultation?
100
The average rate of hair growth.
What is 1/2 inch per month?
100
The technical term for the infestation of the hair and scalp with head lice.
What is pediculosis capitis?
200
The scientific study of hair
What is trichology?
200
The fibrous protein that hair is composed of.
What is keratin?
200
This term is measured by the diameter of the hair strand and is classified as coarse, medium or fine.
What is texture?
200
Characterized by the sudden falling out of hair in round patches that create bald spots.
What is alopecia areata?
200
It is the fungus that causes dandruff.
What is Malassezia?
300
A small, cone-shaped elevation at the base of the hair follicle that fits into the hair bulb.
What is the dermal papilla?
300
91% of hair is comprised of this
What is protein?
300
This measures the number of individual hair strands per square inch of scalp area.
What is density?
300
This is the normal amount of hair shed per day.
What is 75 to 100?
300
The technical term for grey hair.
What is canities?
400
A minute, involuntary muscle fiber in the skin attached to the base of the hair follicle. Strong emotions or cold cause it to contract which makes the hair stand up.
What is arrector pili?
400
These bonds can easily be broken by water or heat.
What are the hydrogen bonds?
400
This hair type absorbs the least amount of moisture, (has poor or low porosity) and may require a more alkaline solution than other hair types.
What is resistant hair?
400
The two terms for the short, fine, soft downy hair found on the cheeks, forehead and nearly all areas of the body.
What are vellus and lanugo?
400
Commonly known as razor bumps, this inflammatory condition consists of papules and pustules generally caused by ingrown hairs.
What is pseudofolliculitis barbae?
500
From outermost to innermost, these are the 3 layers of the hair shaft.
What are the cuticle, the cortex and the medulla?
500
This element comprises 51% of the protein that makes up human hair.
What is Carbon?
500
This term is an indication of the strength of the side bonds in the hair. Hair low in this indicator will be brittle and will break easily.
What is elasticity?
500
The stage of hair growth in which new hair is formed