Oregon Barber License Exam Questions
and answers 2025
Cuticle .- .ANS✓✓-
Outer .most .layer .of .the .hair. .It .consists .of .a .single, .overlapping .layer .of .transp
arent, .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 .- .ANS✓✓-
The .middle .layer .of .the .hair. .A .fibrous .protein .core .formed .by .elongated .cells .c
ontaining .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 .c
olor.
The .Medulla .- .ANS✓✓-
The .innermost .layer .of .hair. .Sometimes .absent .from .hair .and .doesn't .play .a .rol
e .in .hair .coloring. .composed .of .round .cells.
Texture .- .ANS✓✓-The .diameter .of .an .individual .hair.
Density .- .ANS✓✓-The .number .of .hairs .per .square .inch.
Porosity .- .ANS✓✓-The .hairs .ability .to .absorb .moisture.
Low .porosity .- .ANS✓✓-The .cuticle .is .tight. .The .hair .is .resistant .
(difficult .for .moisture .or .chemicals .to .penetrate. .Thus, .it .requires .longer .proces
sing .time.
Average .porosity .- .ANS✓✓-
The .cuticle .is .slightly .raised. .Hair .is .normal .and .processes .in .an .average .amou
nt .of .time.
High .porosity .- .ANS✓✓-
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 .- .ANS✓✓-
A .combination .of .natural .hair .color .that .contain .both .pheomelanin .and .eumelan
in.
Basal .cell .cercinoma .- .ANS✓✓-
Most .common .and .least .severe .type .of .skin .cancer; .often .characterized .by .light
.or .pearly .nodules.
Bromhidrosis .- .ANS✓✓-Foul-
smelling .perspiration, .usually .noticeable .in .the .armpits .and .the .feet .that .is .caus
ed .by .Bacteria.
Bulla .(plural .bullae .- .ANS✓✓-
Large .blister .containing .a .watery .fluid; .similar .to .vesicle .but .larger.
Chloasma .- .ANS✓✓-Aka-
Liver .Spots; .condition .characterized .by .hyperpigmentation .on .the .skin .in .spots .
that .are .not .elevated.
Closed .Comedo .- .ANS✓✓-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 .u
nder .the .skin .surface.
Conjunctivitis .- .ANS✓✓-Aka-
Pink .eye; .common .bacterial .infection .of .the .eyes. .Extremely .contagious.
Contact .dermatitis .- .ANS✓✓-
An .inflammation .of .the .skin .caused .by .Having .contact .with .certain .chemicals .o
r .substances. .Many .that .are .used .in .cosmetology.
Crust .- .ANS✓✓-
Dead .cells .form .over .a .wound .or .blemish .while .it's .healing; .an .accumulation .of
.sebum .and .pus, .sometimes .mixed .with .epidermal .material.
Cyst .- .ANS✓✓-Closed, .abnormally .developed .that .contains .fluid, .pus, .semifluid,
.or .morbid .matter .above .or .below .the .skin.
Hair .Root .- .ANS✓✓-
The .part .of .the .hair .located .below .the .surface .of .the .Epidermis.
(outer .layer .of .the .skin).
Hair .Shaft .- .ANS✓✓-The .portion .of .hair .that .projects .above .the .Epidermis.
Dermatitis .- .ANS✓✓-Inflammatory .condition .of .the .skin.
Hair .Follicle .- .ANS✓✓-The .tube-
like .depression .or .pocket .in .the .skin .or .scalp .that .contains .the .hair .root.
,Hair .bulb .- .ANS✓✓-The .lowest .part .of .the .hair .strand. .The .thickened. .Club-
shaped .structure .that .forms .the .lower .part .if .the .hair .root.
Arrector .pili .muscle .- .ANS✓✓-
The .small, .involuntary .muscle .in .the .base .of .the .hair .follicle. .
(The .reason .for .goose .bumps).
Dermal .papilla .- .ANS✓✓-A .small .cone-
shaped .elevation .located .at .the .base .of .the .hair .follicle .that .fits .into .the .hair .bu
lb. .(Plural: .dermal .papillae)
Dyschromias .- .ANS✓✓-
Abnormal .colorations .of .the .skin .that .accompany .many .skin .disorders .and .syst
emic .disorders.
Eczyma .- .ANS✓✓-
An .inflammatory, .uncomfortable, .and .often .chronic .disease .of .the .skin .characte
rized .by .moderate .to .severe .inflammation, .scaling .and .sometimes .severe .itchin
g.
Excoriation .- .ANS✓✓-
Skin .sore .or .abrasion .produced .by .scratching .or .scraping.
Extrinsic .Factors .- .ANS✓✓-
Primarily .environmental .factors .that .contribute .to .aging .and .the .appearance .of .
aging.
Sebaceous .glands .- .ANS✓✓-
Oil .glands .in .the .skin .and .scalp .that .secrete .sebum ..
Keratinization .- .ANS✓✓-Process .of .creating .keratin .protein. .A .non-living .fiber.
Fissure .- .ANS✓✓-
A .crack .in .the .skin .that .penetrates .the .dermis. .Example .severely .cracked .hands
/lips.
COHNS .elements .- .ANS✓✓-
The .major .elements .that .make .up .human .hair .are .: .Carbon, .Oxygen, .Hydrogen, .
Nitrogen, .and .Sulfur
Amino .acids .- .ANS✓✓-
Units .that .are .joined .together .end .to .end .like .pop .beads .creating .long .chains .of
.protein ..
Peptide .bond .- .ANS✓✓-
A .strong .chemical .bond .that .joins .amino .acids .also .known .as .an ."end .bond".
Proteins .- .ANS✓✓-Long, .coiled .complex .polypeptides .made .of .amino .acids.
, Polypeptide .chain .- .ANS✓✓-
A .long .chain .of .amino .acids .linked .by .peptide .bonds.
Hydrogen .bond .- .ANS✓✓-A .weak, .physical, .cross-
linking .side .bond .easily .broken .By .water .or .heat.
Salt .Bond .- .ANS✓✓-
A .weak .physical .cross .link .bond .between .adjacent .polypeptide .chains. .They .de
pend .on .pH .so .they're .easily .broken .by .strong .alkaline .or .acidic .solutions.
Disulfide .Bond .- .ANS✓✓-A .strong, .chemical .side .bond .that .is .different .from .the
.physical .side .bond .of .a .Hydrogen .or .salt .bond.
Wave .Pattern .- .ANS✓✓-
The .shape .of .the .hair .strand. .Can .be .described .as .straight, .curly, .extremely .cur
ly.
Vellus .hair .- .ANS✓✓-
Aka-"lanugo .hair* .is .short, .fine, .unpigmented .and .downy .hair .that .appears .on .t
he .body.
Terminal .Hair .- .ANS✓✓-
Long, .coarse, .pigmented .hair .found .on .the .scalp, .legs, .arms, .and .bodies .of .mal
es .and .females. .Coarser .than .vellus .hair.
Anagen .Phase .- .ANS✓✓-Aka-"Growth .Phase" .where .new .hair .is .produced.
Catagen .Phase .- .ANS✓✓-
The .brief .transition .period .between .the .growth .and .resting .phases .of .a .hair .folli
cle.
Telogen .Phase .- .ANS✓✓-Aka-"Resting .Phase"-
the .final .phase .in .the .hair .cycle .and .lasts .until .the .fully .grown .hair .is .shed.
Androgenic .alopecia .- .ANS✓✓-
Aka-"Androgenetic .Alopecia .- .is .hair .loss .characterized .by .miniaturization .of .ter
minal .Hair .that .is .converted .into .vellus .hair. .Usually .the .result .of .genetics, .age,
.or .hormonal .changes.
Free .radicals .- .ANS✓✓-
Unstable .molecules .that .cause .biochemical .aging, .especially .wrinkling .and .sag
ging .of .the .skin.
Alopecia .areata .- .ANS✓✓-An .autoimmune .disorder .that .causes .the .affected .hair
.follicles .to .be .mistakenly .attacked .by .a .person's .own .immune .system.
Postpartum .aloepcia .- .ANS✓✓-
A .temporary .hair .loss .experienced .At .the .end .of .pregnancy.
and answers 2025
Cuticle .- .ANS✓✓-
Outer .most .layer .of .the .hair. .It .consists .of .a .single, .overlapping .layer .of .transp
arent, .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 .- .ANS✓✓-
The .middle .layer .of .the .hair. .A .fibrous .protein .core .formed .by .elongated .cells .c
ontaining .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 .c
olor.
The .Medulla .- .ANS✓✓-
The .innermost .layer .of .hair. .Sometimes .absent .from .hair .and .doesn't .play .a .rol
e .in .hair .coloring. .composed .of .round .cells.
Texture .- .ANS✓✓-The .diameter .of .an .individual .hair.
Density .- .ANS✓✓-The .number .of .hairs .per .square .inch.
Porosity .- .ANS✓✓-The .hairs .ability .to .absorb .moisture.
Low .porosity .- .ANS✓✓-The .cuticle .is .tight. .The .hair .is .resistant .
(difficult .for .moisture .or .chemicals .to .penetrate. .Thus, .it .requires .longer .proces
sing .time.
Average .porosity .- .ANS✓✓-
The .cuticle .is .slightly .raised. .Hair .is .normal .and .processes .in .an .average .amou
nt .of .time.
High .porosity .- .ANS✓✓-
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 .- .ANS✓✓-
A .combination .of .natural .hair .color .that .contain .both .pheomelanin .and .eumelan
in.
Basal .cell .cercinoma .- .ANS✓✓-
Most .common .and .least .severe .type .of .skin .cancer; .often .characterized .by .light
.or .pearly .nodules.
Bromhidrosis .- .ANS✓✓-Foul-
smelling .perspiration, .usually .noticeable .in .the .armpits .and .the .feet .that .is .caus
ed .by .Bacteria.
Bulla .(plural .bullae .- .ANS✓✓-
Large .blister .containing .a .watery .fluid; .similar .to .vesicle .but .larger.
Chloasma .- .ANS✓✓-Aka-
Liver .Spots; .condition .characterized .by .hyperpigmentation .on .the .skin .in .spots .
that .are .not .elevated.
Closed .Comedo .- .ANS✓✓-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 .u
nder .the .skin .surface.
Conjunctivitis .- .ANS✓✓-Aka-
Pink .eye; .common .bacterial .infection .of .the .eyes. .Extremely .contagious.
Contact .dermatitis .- .ANS✓✓-
An .inflammation .of .the .skin .caused .by .Having .contact .with .certain .chemicals .o
r .substances. .Many .that .are .used .in .cosmetology.
Crust .- .ANS✓✓-
Dead .cells .form .over .a .wound .or .blemish .while .it's .healing; .an .accumulation .of
.sebum .and .pus, .sometimes .mixed .with .epidermal .material.
Cyst .- .ANS✓✓-Closed, .abnormally .developed .that .contains .fluid, .pus, .semifluid,
.or .morbid .matter .above .or .below .the .skin.
Hair .Root .- .ANS✓✓-
The .part .of .the .hair .located .below .the .surface .of .the .Epidermis.
(outer .layer .of .the .skin).
Hair .Shaft .- .ANS✓✓-The .portion .of .hair .that .projects .above .the .Epidermis.
Dermatitis .- .ANS✓✓-Inflammatory .condition .of .the .skin.
Hair .Follicle .- .ANS✓✓-The .tube-
like .depression .or .pocket .in .the .skin .or .scalp .that .contains .the .hair .root.
,Hair .bulb .- .ANS✓✓-The .lowest .part .of .the .hair .strand. .The .thickened. .Club-
shaped .structure .that .forms .the .lower .part .if .the .hair .root.
Arrector .pili .muscle .- .ANS✓✓-
The .small, .involuntary .muscle .in .the .base .of .the .hair .follicle. .
(The .reason .for .goose .bumps).
Dermal .papilla .- .ANS✓✓-A .small .cone-
shaped .elevation .located .at .the .base .of .the .hair .follicle .that .fits .into .the .hair .bu
lb. .(Plural: .dermal .papillae)
Dyschromias .- .ANS✓✓-
Abnormal .colorations .of .the .skin .that .accompany .many .skin .disorders .and .syst
emic .disorders.
Eczyma .- .ANS✓✓-
An .inflammatory, .uncomfortable, .and .often .chronic .disease .of .the .skin .characte
rized .by .moderate .to .severe .inflammation, .scaling .and .sometimes .severe .itchin
g.
Excoriation .- .ANS✓✓-
Skin .sore .or .abrasion .produced .by .scratching .or .scraping.
Extrinsic .Factors .- .ANS✓✓-
Primarily .environmental .factors .that .contribute .to .aging .and .the .appearance .of .
aging.
Sebaceous .glands .- .ANS✓✓-
Oil .glands .in .the .skin .and .scalp .that .secrete .sebum ..
Keratinization .- .ANS✓✓-Process .of .creating .keratin .protein. .A .non-living .fiber.
Fissure .- .ANS✓✓-
A .crack .in .the .skin .that .penetrates .the .dermis. .Example .severely .cracked .hands
/lips.
COHNS .elements .- .ANS✓✓-
The .major .elements .that .make .up .human .hair .are .: .Carbon, .Oxygen, .Hydrogen, .
Nitrogen, .and .Sulfur
Amino .acids .- .ANS✓✓-
Units .that .are .joined .together .end .to .end .like .pop .beads .creating .long .chains .of
.protein ..
Peptide .bond .- .ANS✓✓-
A .strong .chemical .bond .that .joins .amino .acids .also .known .as .an ."end .bond".
Proteins .- .ANS✓✓-Long, .coiled .complex .polypeptides .made .of .amino .acids.
, Polypeptide .chain .- .ANS✓✓-
A .long .chain .of .amino .acids .linked .by .peptide .bonds.
Hydrogen .bond .- .ANS✓✓-A .weak, .physical, .cross-
linking .side .bond .easily .broken .By .water .or .heat.
Salt .Bond .- .ANS✓✓-
A .weak .physical .cross .link .bond .between .adjacent .polypeptide .chains. .They .de
pend .on .pH .so .they're .easily .broken .by .strong .alkaline .or .acidic .solutions.
Disulfide .Bond .- .ANS✓✓-A .strong, .chemical .side .bond .that .is .different .from .the
.physical .side .bond .of .a .Hydrogen .or .salt .bond.
Wave .Pattern .- .ANS✓✓-
The .shape .of .the .hair .strand. .Can .be .described .as .straight, .curly, .extremely .cur
ly.
Vellus .hair .- .ANS✓✓-
Aka-"lanugo .hair* .is .short, .fine, .unpigmented .and .downy .hair .that .appears .on .t
he .body.
Terminal .Hair .- .ANS✓✓-
Long, .coarse, .pigmented .hair .found .on .the .scalp, .legs, .arms, .and .bodies .of .mal
es .and .females. .Coarser .than .vellus .hair.
Anagen .Phase .- .ANS✓✓-Aka-"Growth .Phase" .where .new .hair .is .produced.
Catagen .Phase .- .ANS✓✓-
The .brief .transition .period .between .the .growth .and .resting .phases .of .a .hair .folli
cle.
Telogen .Phase .- .ANS✓✓-Aka-"Resting .Phase"-
the .final .phase .in .the .hair .cycle .and .lasts .until .the .fully .grown .hair .is .shed.
Androgenic .alopecia .- .ANS✓✓-
Aka-"Androgenetic .Alopecia .- .is .hair .loss .characterized .by .miniaturization .of .ter
minal .Hair .that .is .converted .into .vellus .hair. .Usually .the .result .of .genetics, .age,
.or .hormonal .changes.
Free .radicals .- .ANS✓✓-
Unstable .molecules .that .cause .biochemical .aging, .especially .wrinkling .and .sag
ging .of .the .skin.
Alopecia .areata .- .ANS✓✓-An .autoimmune .disorder .that .causes .the .affected .hair
.follicles .to .be .mistakenly .attacked .by .a .person's .own .immune .system.
Postpartum .aloepcia .- .ANS✓✓-
A .temporary .hair .loss .experienced .At .the .end .of .pregnancy.
