Louisiana Barber Licensing Examination
with Practice Questions And Correct
Answers (Verif
1. A Louisiana licensed barber in Baton Rouge uses a chemical relaxer containing
sodium hydroxide on a client who had a previous 'no-lye' relaxer (guanidine
hydroxide) four weeks prior. The client reports intense burning during application.
Which factor most directly explains this adverse reaction?
A. The sodium hydroxide neutralizes the guanidine hydroxide residue, causing an
exothermic reaction.
B. The prior no-lye relaxer deposits calcium hydroxide, which reacts with sodium
hydroxide to produce heat and irritation.
C. Guanidine hydroxide is acidic and neutralizes the sodium hydroxide, reducing
efficacy but not causing burning.
D. The scalp's pH remains elevated from the previous service, increasing susceptibility to
chemical burns.
Answer: B. The prior no-lye relaxer deposits calcium hydroxide, which reacts with
sodium hydroxide to produce heat and irritation.
Rationale: No-lye relaxers contain guanidine hydroxide and calcium hydroxide; residues
can remain in the hair. When sodium hydroxide is applied over these residues, a chemical
reaction can generate heat and irritation. Option A is incorrect because neutralization does
not typically produce exothermic reactions in this context. Option C is wrong because
guanidine hydroxide is alkaline, not acidic. Option D is less direct; the primary cause is the
chemical interaction, not residual pH.
Page 1 of 79
,2. According to Louisiana Administrative Code Title 46, Part LXVII, which of the
following is a requirement for a barbershop license regarding the display of licenses?
A. Only the shop license must be displayed in a conspicuous place.
B. Each barber's individual license must be displayed at their workstation.
C. Both the shop license and a list of all employed barbers' license numbers must be
posted at the entrance.
D. Licenses must be kept in a secure office and available upon request by an inspector.
Answer: B. Each barber's individual license must be displayed at their workstation.
Rationale: Louisiana regulations require each barber to display their individual license at
their workstation. Shop licenses must also be displayed, but the specific requirement for
individual licenses is at the workstation. Option A is incomplete. Option C is not specified;
a list of license numbers is not required. Option D is incorrect because licenses must be
publicly displayed, not stored away.
Page 2 of 79
,3. A barber is performing a hair coloring service using a permanent oxidative dye. The
client's hair has a high porosity due to previous lightening. Which adjustment to the
developer volume and processing time is most appropriate to achieve a uniform,
deposit-only result?
A. Use a 40-volume developer and extend processing time to ensure full penetration.
B. Use a 10-volume developer and reduce processing time to minimize damage.
C. Use a 20-volume developer and standard processing time, as porosity does not affect
dye uptake.
D. Use a 10-volume developer and standard processing time, as high porosity increases
absorption.
Answer: D. Use a 10-volume developer and standard processing time, as high porosity
increases absorption.
Rationale: High porosity hair absorbs dye quickly and can appear darker; using a lower
volume developer (10 volume) and standard processing time prevents over-deposition.
Option A would cause further damage and uneven color. Option B is incorrect because
reducing time may not allow sufficient deposit. Option C is wrong because porosity does
affect dye uptake.
4. During a straight razor shave, the barber notices a small nick on the client's neck.
Which immediate action aligns with both Louisiana sanitation rules and bloodborne
pathogen standards?
A. Apply styptic powder, continue the shave, and disinfect the razor after the service.
B. Stop the service, clean the wound with an antiseptic, and dispose of the razor blade in
a sharps container.
C. Rinse the nick with water, apply a bandage, and resume shaving with the same razor.
D. Clean the area with alcohol, continue shaving, and then sterilize the razor in an
autoclave.
Answer: B. Stop the service, clean the wound with an antiseptic, and dispose of the
razor blade in a sharps container.
Rationale: Any break in the skin requires stopping the service to prevent infection. The
razor blade is contaminated and must be disposed of in a sharps container. Option A is
unsafe because continuing can worsen the injury. Option C is incorrect because the razor
is contaminated. Option D is wrong because continuing the service risks infection, and
autoclaving is not immediate.
Page 3 of 79
, Page 4 of 79
with Practice Questions And Correct
Answers (Verif
1. A Louisiana licensed barber in Baton Rouge uses a chemical relaxer containing
sodium hydroxide on a client who had a previous 'no-lye' relaxer (guanidine
hydroxide) four weeks prior. The client reports intense burning during application.
Which factor most directly explains this adverse reaction?
A. The sodium hydroxide neutralizes the guanidine hydroxide residue, causing an
exothermic reaction.
B. The prior no-lye relaxer deposits calcium hydroxide, which reacts with sodium
hydroxide to produce heat and irritation.
C. Guanidine hydroxide is acidic and neutralizes the sodium hydroxide, reducing
efficacy but not causing burning.
D. The scalp's pH remains elevated from the previous service, increasing susceptibility to
chemical burns.
Answer: B. The prior no-lye relaxer deposits calcium hydroxide, which reacts with
sodium hydroxide to produce heat and irritation.
Rationale: No-lye relaxers contain guanidine hydroxide and calcium hydroxide; residues
can remain in the hair. When sodium hydroxide is applied over these residues, a chemical
reaction can generate heat and irritation. Option A is incorrect because neutralization does
not typically produce exothermic reactions in this context. Option C is wrong because
guanidine hydroxide is alkaline, not acidic. Option D is less direct; the primary cause is the
chemical interaction, not residual pH.
Page 1 of 79
,2. According to Louisiana Administrative Code Title 46, Part LXVII, which of the
following is a requirement for a barbershop license regarding the display of licenses?
A. Only the shop license must be displayed in a conspicuous place.
B. Each barber's individual license must be displayed at their workstation.
C. Both the shop license and a list of all employed barbers' license numbers must be
posted at the entrance.
D. Licenses must be kept in a secure office and available upon request by an inspector.
Answer: B. Each barber's individual license must be displayed at their workstation.
Rationale: Louisiana regulations require each barber to display their individual license at
their workstation. Shop licenses must also be displayed, but the specific requirement for
individual licenses is at the workstation. Option A is incomplete. Option C is not specified;
a list of license numbers is not required. Option D is incorrect because licenses must be
publicly displayed, not stored away.
Page 2 of 79
,3. A barber is performing a hair coloring service using a permanent oxidative dye. The
client's hair has a high porosity due to previous lightening. Which adjustment to the
developer volume and processing time is most appropriate to achieve a uniform,
deposit-only result?
A. Use a 40-volume developer and extend processing time to ensure full penetration.
B. Use a 10-volume developer and reduce processing time to minimize damage.
C. Use a 20-volume developer and standard processing time, as porosity does not affect
dye uptake.
D. Use a 10-volume developer and standard processing time, as high porosity increases
absorption.
Answer: D. Use a 10-volume developer and standard processing time, as high porosity
increases absorption.
Rationale: High porosity hair absorbs dye quickly and can appear darker; using a lower
volume developer (10 volume) and standard processing time prevents over-deposition.
Option A would cause further damage and uneven color. Option B is incorrect because
reducing time may not allow sufficient deposit. Option C is wrong because porosity does
affect dye uptake.
4. During a straight razor shave, the barber notices a small nick on the client's neck.
Which immediate action aligns with both Louisiana sanitation rules and bloodborne
pathogen standards?
A. Apply styptic powder, continue the shave, and disinfect the razor after the service.
B. Stop the service, clean the wound with an antiseptic, and dispose of the razor blade in
a sharps container.
C. Rinse the nick with water, apply a bandage, and resume shaving with the same razor.
D. Clean the area with alcohol, continue shaving, and then sterilize the razor in an
autoclave.
Answer: B. Stop the service, clean the wound with an antiseptic, and dispose of the
razor blade in a sharps container.
Rationale: Any break in the skin requires stopping the service to prevent infection. The
razor blade is contaminated and must be disposed of in a sharps container. Option A is
unsafe because continuing can worsen the injury. Option C is incorrect because the razor
is contaminated. Option D is wrong because continuing the service risks infection, and
autoclaving is not immediate.
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