Oregon Barber License (practice test for board exam)
2025 GRADED A
/. Cuticle - Answer-Outer most layer of the hair. It consists of a single, overlapping layer
of transparent, scale-like cells that resemble shingles on a roof. It protects the inner
cortex layer and contributes to 20% of overall strength of hair.
/.The Cortex - Answer-The middle layer of the hair. A fibrous protein core formed by
elongated cells containing melanin to pigment. Gives hair majority of its strength and
elasticity. A healthy Cortex contributes to %80 to the overall strength of the hair.
Contains melanin that determines hair color.
/.The Medulla - Answer-The innermost layer of hair. Sometimes absent from hair and
doesn't play a role in hair coloring. composed of round cells.
/.Texture - Answer-The diameter of an individual hair.
/.Density - Answer-The number of hairs per square inch.
/.Porosity - Answer-The hairs ability to absorb moisture.
/.Low porosity - Answer-The cuticle is tight. The hair is resistant (difficult for moisture or
chemicals to penetrate. Thus, it requires longer processing time.
/.Average porosity - Answer-The cuticle is slightly raised. Hair is normal and processes
in an average amount of time.
/.High porosity - Answer-The cuticle is lifted. The hair is overly porous and takes color
quickly (also fades quickly) Permed, colored, chemically relaxed and straightened hair
will have a high degree of porosity.
/.Mixed melanin - Answer-A combination of natural hair color that contain both
pheomelanin and eumelanin.
/.Basal cell cercinoma - Answer-Most common and least severe type of skin cancer;
often characterized by light or pearly nodules.
/.Bromhidrosis - Answer-Foul-smelling perspiration, usually noticeable in the armpits
and the feet that is caused by Bacteria.
/.Bulla (plural bullae - Answer-Large blister containing a watery fluid; similar to vesicle
but larger.
,/.Chloasma - Answer-Aka-Liver Spots; condition characterized by hyperpigmentation on
the skin in spots that are not elevated.
/.Closed Comedo - Answer-Aka-White head; hair follicle is closed and not exposed to
the environment. Sebum remains a white or cream color and comedone appears as a
small bump just under the skin surface.
/.Conjunctivitis - Answer-Aka-Pink eye; common bacterial infection of the eyes.
Extremely contagious.
/.Contact dermatitis - Answer-An inflammation of the skin caused by Having contact with
certain chemicals or substances. Many that are used in cosmetology.
/.Crust - Answer-Dead cells form over a wound or blemish while it's healing; an
accumulation of sebum and pus, sometimes mixed with epidermal material.
/.Cyst - Answer-Closed, abnormally developed that contains fluid, pus, semifluid, or
morbid matter above or below the skin.
/.Hair Root - Answer-The part of the hair located below the surface of the
Epidermis.(outer layer of the skin).
/.Hair Shaft - Answer-The portion of hair that projects above the Epidermis.
/.Dermatitis - Answer-Inflammatory condition of the skin.
/.Hair Follicle - Answer-The tube-like depression or pocket in the skin or scalp that
contains the hair root.
/.Hair bulb - Answer-The lowest part of the hair strand. The thickened. Club-shaped
structure that forms the lower part if the hair root.
/.Arrector pili muscle - Answer-The small, involuntary muscle in the base of the hair
follicle. (The reason for goose bumps).
/.Dermal papilla - Answer-A small cone-shaped elevation located at the base of the hair
follicle that fits into the hair bulb. (Plural: dermal papillae)
/.Dyschromias - Answer-Abnormal colorations of the skin that accompany many skin
disorders and systemic disorders.
/.Eczyma - Answer-An inflammatory, uncomfortable, and often chronic disease of the
skin characterized by moderate to severe inflammation, scaling and sometimes severe
itching.
,/.Excoriation - Answer-Skin sore or abrasion produced by scratching or scraping.
/.Extrinsic Factors - Answer-Primarily environmental factors that contribute to aging and
the appearance of aging.
/.Sebaceous glands - Answer-Oil glands in the skin and scalp that secrete sebum .
/.Keratinization - Answer-Process of creating keratin protein. A non-living fiber.
/.Fissure - Answer-A crack in the skin that penetrates the dermis. Example severely
cracked hands/lips.
/.COHNS elements - Answer-The major elements that make up human hair are :
Carbon, Oxygen, Hydrogen, Nitrogen, and Sulfur
/.Amino acids - Answer-Units that are joined together end to end like pop beads creating
long chains of protein .
/.Peptide bond - Answer-A strong chemical bond that joins amino acids also known as
an "end bond".
/.Proteins - Answer-Long, coiled complex polypeptides made of amino acids.
/.Polypeptide chain - Answer-A long chain of amino acids linked by peptide bonds.
/.Hydrogen bond - Answer-A weak, physical, cross-linking side bond easily broken By
water or heat.
/.Salt Bond - Answer-A weak physical cross link bond between adjacent polypeptide
chains. They depend on pH so they're easily broken by strong alkaline or acidic
solutions.
/.Disulfide Bond - Answer-A strong, chemical side bond that is different from the
physical side bond of a Hydrogen or salt bond.
/.Wave Pattern - Answer-The shape of the hair strand. Can be described as straight,
curly, extremely curly.
/.Vellus hair - Answer-Aka-"lanugo hair* is short, fine, unpigmented and downy hair that
appears on the body.
/.Terminal Hair - Answer-Long, coarse, pigmented hair found on the scalp, legs, arms,
and bodies of males and females. Coarser than vellus hair.
/.Anagen Phase - Answer-Aka-"Growth Phase" where new hair is produced.
, /.Catagen Phase - Answer-The brief transition period between the growth and resting
phases of a hair follicle.
/.Telogen Phase - Answer-Aka-"Resting Phase"-the final phase in the hair cycle and
lasts until the fully grown hair is shed.
/.Androgenic alopecia - Answer-Aka-"Androgenetic Alopecia - is hair loss characterized
by miniaturization of terminal Hair that is converted into vellus hair. Usually the result of
genetics, age, or hormonal changes.
/.Free radicals - Answer-Unstable molecules that cause biochemical aging, especially
wrinkling and sagging of the skin.
/.Alopecia areata - Answer-An autoimmune disorder that causes the affected hair
follicles to be mistakenly attacked by a person's own immune system.
/.Postpartum aloepcia - Answer-A temporary hair loss experienced At the end of
pregnancy.
/.Alopecia totalis - Answer-This hair disorder usually begins with one or more small,
round, smooth bald patches and can progress to total scalp hair loss .
/.Alopecia universalis - Answer-Complete body hair loss .
/.Minoxidil/ Finasteride - Answer-The only two hair loss treatments said to counter hair
loss and approved by the FDA to sale in the USA.
/.Canities - Answer-Technical term for gray hair.
/.Ringed hair - Answer-Is a variety of canities, characterized by alternating bands of
gray and pigmented hair throughout the length of the hair strand.
/.Hypertrichosis - Answer-Aka-"Hirsutism"- A condition of abnormal growth of hair.
Characterized by the growth of terminal Hair in areas of the body that normally grows
vellus hair.
/.Trichoptilosis - Answer-The technical term for split ends.
/.Trichorrhexis nodosa - Answer-Technical term for knotted Hair. Characterized by
brittleness and the formation of nodular dwellings along the hair shaft.
/.Monilethrix - Answer-Technical term for beaded hair. The hair breaks easily between
the beads or nodes.
/.Fragilitas crinium - Answer-Technical term for brittle hair.
2025 GRADED A
/. Cuticle - Answer-Outer most layer of the hair. It consists of a single, overlapping layer
of transparent, scale-like cells that resemble shingles on a roof. It protects the inner
cortex layer and contributes to 20% of overall strength of hair.
/.The Cortex - Answer-The middle layer of the hair. A fibrous protein core formed by
elongated cells containing melanin to pigment. Gives hair majority of its strength and
elasticity. A healthy Cortex contributes to %80 to the overall strength of the hair.
Contains melanin that determines hair color.
/.The Medulla - Answer-The innermost layer of hair. Sometimes absent from hair and
doesn't play a role in hair coloring. composed of round cells.
/.Texture - Answer-The diameter of an individual hair.
/.Density - Answer-The number of hairs per square inch.
/.Porosity - Answer-The hairs ability to absorb moisture.
/.Low porosity - Answer-The cuticle is tight. The hair is resistant (difficult for moisture or
chemicals to penetrate. Thus, it requires longer processing time.
/.Average porosity - Answer-The cuticle is slightly raised. Hair is normal and processes
in an average amount of time.
/.High porosity - Answer-The cuticle is lifted. The hair is overly porous and takes color
quickly (also fades quickly) Permed, colored, chemically relaxed and straightened hair
will have a high degree of porosity.
/.Mixed melanin - Answer-A combination of natural hair color that contain both
pheomelanin and eumelanin.
/.Basal cell cercinoma - Answer-Most common and least severe type of skin cancer;
often characterized by light or pearly nodules.
/.Bromhidrosis - Answer-Foul-smelling perspiration, usually noticeable in the armpits
and the feet that is caused by Bacteria.
/.Bulla (plural bullae - Answer-Large blister containing a watery fluid; similar to vesicle
but larger.
,/.Chloasma - Answer-Aka-Liver Spots; condition characterized by hyperpigmentation on
the skin in spots that are not elevated.
/.Closed Comedo - Answer-Aka-White head; hair follicle is closed and not exposed to
the environment. Sebum remains a white or cream color and comedone appears as a
small bump just under the skin surface.
/.Conjunctivitis - Answer-Aka-Pink eye; common bacterial infection of the eyes.
Extremely contagious.
/.Contact dermatitis - Answer-An inflammation of the skin caused by Having contact with
certain chemicals or substances. Many that are used in cosmetology.
/.Crust - Answer-Dead cells form over a wound or blemish while it's healing; an
accumulation of sebum and pus, sometimes mixed with epidermal material.
/.Cyst - Answer-Closed, abnormally developed that contains fluid, pus, semifluid, or
morbid matter above or below the skin.
/.Hair Root - Answer-The part of the hair located below the surface of the
Epidermis.(outer layer of the skin).
/.Hair Shaft - Answer-The portion of hair that projects above the Epidermis.
/.Dermatitis - Answer-Inflammatory condition of the skin.
/.Hair Follicle - Answer-The tube-like depression or pocket in the skin or scalp that
contains the hair root.
/.Hair bulb - Answer-The lowest part of the hair strand. The thickened. Club-shaped
structure that forms the lower part if the hair root.
/.Arrector pili muscle - Answer-The small, involuntary muscle in the base of the hair
follicle. (The reason for goose bumps).
/.Dermal papilla - Answer-A small cone-shaped elevation located at the base of the hair
follicle that fits into the hair bulb. (Plural: dermal papillae)
/.Dyschromias - Answer-Abnormal colorations of the skin that accompany many skin
disorders and systemic disorders.
/.Eczyma - Answer-An inflammatory, uncomfortable, and often chronic disease of the
skin characterized by moderate to severe inflammation, scaling and sometimes severe
itching.
,/.Excoriation - Answer-Skin sore or abrasion produced by scratching or scraping.
/.Extrinsic Factors - Answer-Primarily environmental factors that contribute to aging and
the appearance of aging.
/.Sebaceous glands - Answer-Oil glands in the skin and scalp that secrete sebum .
/.Keratinization - Answer-Process of creating keratin protein. A non-living fiber.
/.Fissure - Answer-A crack in the skin that penetrates the dermis. Example severely
cracked hands/lips.
/.COHNS elements - Answer-The major elements that make up human hair are :
Carbon, Oxygen, Hydrogen, Nitrogen, and Sulfur
/.Amino acids - Answer-Units that are joined together end to end like pop beads creating
long chains of protein .
/.Peptide bond - Answer-A strong chemical bond that joins amino acids also known as
an "end bond".
/.Proteins - Answer-Long, coiled complex polypeptides made of amino acids.
/.Polypeptide chain - Answer-A long chain of amino acids linked by peptide bonds.
/.Hydrogen bond - Answer-A weak, physical, cross-linking side bond easily broken By
water or heat.
/.Salt Bond - Answer-A weak physical cross link bond between adjacent polypeptide
chains. They depend on pH so they're easily broken by strong alkaline or acidic
solutions.
/.Disulfide Bond - Answer-A strong, chemical side bond that is different from the
physical side bond of a Hydrogen or salt bond.
/.Wave Pattern - Answer-The shape of the hair strand. Can be described as straight,
curly, extremely curly.
/.Vellus hair - Answer-Aka-"lanugo hair* is short, fine, unpigmented and downy hair that
appears on the body.
/.Terminal Hair - Answer-Long, coarse, pigmented hair found on the scalp, legs, arms,
and bodies of males and females. Coarser than vellus hair.
/.Anagen Phase - Answer-Aka-"Growth Phase" where new hair is produced.
, /.Catagen Phase - Answer-The brief transition period between the growth and resting
phases of a hair follicle.
/.Telogen Phase - Answer-Aka-"Resting Phase"-the final phase in the hair cycle and
lasts until the fully grown hair is shed.
/.Androgenic alopecia - Answer-Aka-"Androgenetic Alopecia - is hair loss characterized
by miniaturization of terminal Hair that is converted into vellus hair. Usually the result of
genetics, age, or hormonal changes.
/.Free radicals - Answer-Unstable molecules that cause biochemical aging, especially
wrinkling and sagging of the skin.
/.Alopecia areata - Answer-An autoimmune disorder that causes the affected hair
follicles to be mistakenly attacked by a person's own immune system.
/.Postpartum aloepcia - Answer-A temporary hair loss experienced At the end of
pregnancy.
/.Alopecia totalis - Answer-This hair disorder usually begins with one or more small,
round, smooth bald patches and can progress to total scalp hair loss .
/.Alopecia universalis - Answer-Complete body hair loss .
/.Minoxidil/ Finasteride - Answer-The only two hair loss treatments said to counter hair
loss and approved by the FDA to sale in the USA.
/.Canities - Answer-Technical term for gray hair.
/.Ringed hair - Answer-Is a variety of canities, characterized by alternating bands of
gray and pigmented hair throughout the length of the hair strand.
/.Hypertrichosis - Answer-Aka-"Hirsutism"- A condition of abnormal growth of hair.
Characterized by the growth of terminal Hair in areas of the body that normally grows
vellus hair.
/.Trichoptilosis - Answer-The technical term for split ends.
/.Trichorrhexis nodosa - Answer-Technical term for knotted Hair. Characterized by
brittleness and the formation of nodular dwellings along the hair shaft.
/.Monilethrix - Answer-Technical term for beaded hair. The hair breaks easily between
the beads or nodes.
/.Fragilitas crinium - Answer-Technical term for brittle hair.
