Pivot Point Cosmetology

41 terms by djjarvis79 

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trichology

The study of hair

3 types of hair follicle

round, oval & elliptical

cuticle layer

outer layer of the hair, hard resistant layer

cortex

middle layer of the hair, soft elastic quality

medulla

center layer of the hair

keratinization

process where cells change their shape, dry out & form keratin protein

hair

primarily made up of protein

anagen

"growing stage" hair bulb has an attached root sheath. hair is darker

catagen

"transitional stage" ALL cell division stops. only lasts a few weeks.

telogen

"resting stage" hair bulb has no attached root sheath. Hair falls out.

melanin

gives skin & hair their color

eumelanin

black/brown color

pheomelanin

red in color, melanin that provides natural hair colors from red and ginger to yellow/blond tones

albinism

absence of pigmentation in the eyes and skin and hair

texture

degree of coarseness or fineness in the hair fiber

density

judged by the # of active hair follicles per square inch

hair porosity

the ability of the hair to absorb moisture

hair elasticity

the ability of the hair to stretch and return to its original length without braking

broken hair

"abraded hair"

Split ends

"trichoptilosis"

matting

"pilica polonica"; hair tangled together

nodules

"trichorrhexis nodosa" presence of lumps or swelling along the hair shaft

canities

technical term for gray hair

ringed hair

Alternating bands of gray and dark hair.

hypertrichosis

is an excessive growth of hair

monilethrix

technical term for beaded hair

psoriasis

a chronic skin disease characterized by dry red patches covered with scales

dandruff

loose scales shed from the scalp

ringworm

Scaly, Round, itchy patch on skin. (Contagious)

ringworm of the scalp

enlarged open hair follicles that are surrounded by clusters of red spots

honeycomb ringworm

dry, yellow, encrusted areas on the scalp

itch mite

scabies

head lice

infestation of head lice on the scalp

lanugo

baby fine, silky hair

vellus

short, fine, non-pigmented hair

alopecia

excessive hair loss

androgenetic alopecia

heredity, hormones & age

postpartum alopecia

hair loss due to pregnancy

alopecia areata

round or irregular patches w/o an inflamed scalp

telogen effluvium

premature shedding of hair

traction or traumatic alopecia

repetitive traction on the hair by pulling and twisting

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