NEVADA STATE BOARD OF
COSMETOLOGY THEORY TEST
CERTIFICATION REVIEW SET 2026
QUESTIONS WITH ANSWERS GRADED A+
⫸ Beveling Answer: Haircutting technique using diagonal lines by
cutting hair ends with a slight increase or decrease in length.
or A stacking tehnique
⫸ single-use Answer: Disposable items cannot be used more than once
⫸ Decontamination methods 2 Answer: Cleaning and Steriling
⫸ Humectants Answer: Substances that absorb moisture or promote the
retention of moisture.
⫸ hair root Answer: The part of the hair located below the surface of the
epidermis.
⫸ structure of the hair root Answer: hair follicle hair bulb dermal
papilla arrector pilimuscle sebaceous glands
,⫸ traveling guideline Answer: Also known as movable guideline;
guideline that moves as the haircutting progresses, used often when
creating layers or graduation.
⫸ stationary guideline Answer: guideline that does not move
⫸ Temporary haircolor Answer: Nonpermanent color whose large
pigment molecules prevent penetration of the cuticle layer, allowing
only a coating action that may be removed by shampooing.
⫸ Deionized water Answer: Water that has had impurities, such as
calcium and magnesium and other metal Ions
⫸ Regular relaxers Answer: Normal texture or Medium curl
⫸ Average porosity Answer: Cuticle is slightly raised
⫸ hair cuticle Answer: outermost layer of hair
⫸ cortex of hair Answer: the middle layer also is the layer that holds
color
⫸ no-lye relaxers Answer: Lithium hydroxide and potassium hydroxide
, ⫸ disulfide bonds Answer: Strong chemical side bonds formed when
the sulfur atoms in two adjacent protein chains are joined together.
⫸ Mild relaxer Answer: best for fine , color treated, or damaged hair
⫸ surfactants Answer: the second ingredient that most shampoos have
in common
⫸ hydrogen relaxer Answer: Relaxers with a high alkaline (pH) content;
available in varying formulations for black folks
⫸ when hair is green Answer: use red to balance
⫸ Density Answer: measure the number of individual hair strands on
one square inch of scalp
⫸ hair porosity Answer: The ability of the hair to absorb moisture
⫸ Elasticity Answer: the ability of the hair to stretch and return to its
original length without breaking
⫸ Canities Answer: gray hair
COSMETOLOGY THEORY TEST
CERTIFICATION REVIEW SET 2026
QUESTIONS WITH ANSWERS GRADED A+
⫸ Beveling Answer: Haircutting technique using diagonal lines by
cutting hair ends with a slight increase or decrease in length.
or A stacking tehnique
⫸ single-use Answer: Disposable items cannot be used more than once
⫸ Decontamination methods 2 Answer: Cleaning and Steriling
⫸ Humectants Answer: Substances that absorb moisture or promote the
retention of moisture.
⫸ hair root Answer: The part of the hair located below the surface of the
epidermis.
⫸ structure of the hair root Answer: hair follicle hair bulb dermal
papilla arrector pilimuscle sebaceous glands
,⫸ traveling guideline Answer: Also known as movable guideline;
guideline that moves as the haircutting progresses, used often when
creating layers or graduation.
⫸ stationary guideline Answer: guideline that does not move
⫸ Temporary haircolor Answer: Nonpermanent color whose large
pigment molecules prevent penetration of the cuticle layer, allowing
only a coating action that may be removed by shampooing.
⫸ Deionized water Answer: Water that has had impurities, such as
calcium and magnesium and other metal Ions
⫸ Regular relaxers Answer: Normal texture or Medium curl
⫸ Average porosity Answer: Cuticle is slightly raised
⫸ hair cuticle Answer: outermost layer of hair
⫸ cortex of hair Answer: the middle layer also is the layer that holds
color
⫸ no-lye relaxers Answer: Lithium hydroxide and potassium hydroxide
, ⫸ disulfide bonds Answer: Strong chemical side bonds formed when
the sulfur atoms in two adjacent protein chains are joined together.
⫸ Mild relaxer Answer: best for fine , color treated, or damaged hair
⫸ surfactants Answer: the second ingredient that most shampoos have
in common
⫸ hydrogen relaxer Answer: Relaxers with a high alkaline (pH) content;
available in varying formulations for black folks
⫸ when hair is green Answer: use red to balance
⫸ Density Answer: measure the number of individual hair strands on
one square inch of scalp
⫸ hair porosity Answer: The ability of the hair to absorb moisture
⫸ Elasticity Answer: the ability of the hair to stretch and return to its
original length without breaking
⫸ Canities Answer: gray hair
