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1

Tricholigy

THe scientific study of hair, it's disease and care

2

Mature strand

Two parts are the hairs roots and hair shaft of human hair

3

Hair follicle

The tube like depression or pocket in the skin or scalp that contains the hair root

4

Hair follicles

Are not found in the soles of the feet

5

Arrector pili muscle

The small involuntary muscle in the base of the hair follicle

6

Sebum

The darth or oily substance secreted by the sebaceous glands

7

Healthy cuticle

For chemicals to penetrate the hair layer must have the alkaline pit

8

Medulla

Composed of round cells

9

Anlagen phase

New hair is produced Becuase new cells are actively manufactured in the hair follicle

10

Anagen phase

New hair is produced because new cells are actively manufactured in the hair follicle

11

Major elements

That make up human hair are carbon oxygen hydrogen nitrogen and sulfur

12

Peptide bonds

The strong chemical bonds that Join amino acids

13

Pheomelanin

Provides natural colors ranging from red and finger to yellow and blond tones

14

Asians

Tend to have extremely straight hair

15

Minimize tangles

Use a detangling rinse when shampooing extremely curly hair

16

Hair texture

Classified as course medium or fine

17

Hair density

The measurement of the number of individual hair strands on kne square inch of the scalp

18

Chemical services

Performed on hair with low proprietary required more alanine solutions

19

Wet hair

With normal elasticity will stretch up to 50% of its original length and return to that length with out breaking

20

Normalizing shampoo

Can treat oily hair and scalp by properly washing

21

Vellus

Type of hair that almost never has a medulla

22

Cartagena phase

The follicle canal shrink and detach from the dermal papilla

23

Healthy scalp

The average growth is 1/2" per mo

24

Canities

Grey hair

25

Hypertrichosis

A condition of abnormal growth of terminal hair in areas of the body that normally grow only Vellus hair

26

Pityriasis

Dandruff

27

Dermal papilla

One of the main structures of the hair root that contains the blood and nerve supply that provides the nutrients needed for hair growth

28

Salt bonds

Account for about 1/3 of the hairs overall strength

29

Anlagen phase

Generally lasts from 3 to 5 years

30

Scalp hair

Grows faster on woman than on men