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102.15 Hair Care
| Term | Definition |
|---|---|
| texture | degree of coarseness of fineness in the hair fiber |
| fine | feel of silk |
| medium | feel of cotton |
| coarse | feel of wool |
| visual examination | provides clues on the condition of the client's hair ask client questions to best determine which products will work best |
| density | number of active hair follicles per square inch on the scalp |
| porosity | ability of the hair to absorb moisture, liquids, or chemicals |
| average porosity | cuticle is slightly raised normal ability to absorb moisture hair in good condition; suitable for most services |
| resistant porosity | cuticle is flat able to absorb the least amount of moisture also called "poor porosity" |
| extreme porosity | cuticle is raised too porous hair damaged from chemical services treatment required prior to chemical services |
| uneven porosity | porosities are mixed combination of two or more porosities |
| elasticity | ability of hair to stretch and return to its original shape without breaking |
| normal dry hair stretches | 20% |
| wet hair stretches | 40-50% |
| humid regions | curl retention is a challenge |
| dry regions | tends to be flyaway |
| number of cuticle scale layers | 7 to 12 |
| scales should lie flat along the | cortex |
| acid mantle lubricates the outermost layer of the cuticle and reduces | friction |
| combing and brushing damages the | cuticle |
| broken hair | abraded hair, abraded cuticle cuticle becomes cracked and frayed |
| split ends | brittle hair, fragilitis crinium, trichoptilosis small cracks in cuticle deepen into the cortex |
| nodules | trichorrhexis nodosa, knotted hair lumps or swelling along hair shaft |
| canities | grayness grayness or whiteness of hair; congenital or acquired |
| monilethrix | beaded hair breaks in the hair between beads or nodes |
| matting | plica polonica mass of hair strands that cannot be separated |
| ringed hair | pili annulati alternating bands of gray and dark hair |
| hypertrichosis | ambras syndrome abnormal coverage of hair on areas of the body |
| hirsutism | Superfluous hair excessive amounts of hair in women |
| damage | results from incorrect use of salon tools |
| scales | disorder psoriasis thick, crusty patches of red irritated scalp refer to physician |
| dandruff | disorder pityriasis chronic; excessive flaking, itchiness, tightness, and irritation shampoo with anti-dandruff shampoo |
| dry dandruff | disorder pityriasis capitis simplex dry flakes which can appear translucent |
| greasy or waxy dandruff | disorder pityriases steatoides oily flakes combined with sebum; stick to scalp in clusters; yellowish |
| ringworm | disease tinea red, circular patch of blisters; caused by vegetable parasite refer to physician |
| ringworm of the scalp | tinea capitis englarged open hair folicles surrounded by clusters of red spots refer to physician |
| honeycomb ringworm | disease tinea favosa or favus dry, yellow, encrusted area; may have odor; shiny scars may result |
| itch mite | disorder scabies red, watery vesicles; animal parasite burrowing under the skin |
| head lice | disorder pediculosis capitis infestation of head lice causing itching and eventual infection |
| lanugo hair | fine, silky hair covering body before birth |
| vellus hair | short, fine, non-pigmented hair that replaces lanugo hair |
| terminal hair | long, thick pigmented hair such as scalp and eyebrow hair |
| average daily hair loss | 40 to 100 strands |
| alopecia | excessive hair loss caused by fungal or bacterial infection or inflammatory disease of scalp occurs in both men and women |
| androgenetic alopecia | progressive shrinking, or miniaturization, of certain scalp follicles most common form of alopecia male pattern baldness or thinning of hair in females |
| androgenetic alopecia in men | known as male pattern baldness familiar horseshoe shaped fringe loss pattern evaluated common for men to go baldf |
| androgenetic alopecia in women | generalized thinning over the crown scattered hair thinning density evaluated rare for a woman to go bald |
| pattern | refers to shape and location of area |
| density | refers to how much hair is covering the scalp in the area of loss |
| postpartum alopecia | temporary hair loss at conclusion or pregnancy |
| alopecia areata | autoimmune disease; sudden loss of hair in round or irregular patches |
| alopecia areata totalis | total loss of hair on the scalp |
| alopecia areata universalis | loss of hair over entire scalp and body |
| alopecia prematura | baldness that occurs early in life |
| telogen effluvium | premature shedding of hair during the resting stage |
| traction or traumatic alopecia | hair loss from excessive pulling or twisting |
Created by:
kaeleikirk