NIC National Hair Removal Theory Examination — Questions and Answers

Question 1: How long does normal erythema (redness) typically last after facial waxing?

Up to 24 hours (Correct answer)
One full week
Several days
5-10 minutes

Correct answer: Up to 24 hours

Normal post-wax erythema resolves within a few hours for most clients but can persist up to 24 hours in those with sensitive skin.

Question 2: What is folliculitis?

A chemical reaction to depilatory creams
Excessive facial hair growth disorder
A type of laser treatment modality
Inflammation or infection of hair follicles (Correct answer)

Correct answer: Inflammation or infection of hair follicles

Folliculitis is inflammation or infection of hair follicles, often appearing as small red bumps or pustules after hair removal.

Question 3: Can electrolysis permanently remove white or gray facial hair?

No, IPL must be used for white hair first
No, it only works on pigmented hair
Only with the galvanic modality
Yes, because it destroys the follicle with current, not light (Correct answer)

Correct answer: Yes, because it destroys the follicle with current, not light

Unlike laser, electrolysis does not rely on melanin and can permanently destroy follicles of any hair color including white and gray.

Question 4: What pre-treatment instruction is essential before facial laser hair removal?

Apply self-tanner to darken the hair
Bleach the facial hair for better contrast
Tan the skin to boost melanin
Avoid sun exposure and tanning for at least 4–6 weeks prior (Correct answer)

Correct answer: Avoid sun exposure and tanning for at least 4–6 weeks prior

Sun exposure increases epidermal melanin, raising the risk of burns, hyperpigmentation, and reduced treatment efficacy.

Question 5: How should a licensed esthetician respond when a client experiences an adverse skin reaction during waxing?

Advise the client to see a doctor only if symptoms worsen later
Apply more wax to cover the affected reaction area
Stop the service, soothe the skin, and document the incident (Correct answer)
Continue the service to avoid leaving the area partially treated

Correct answer: Stop the service, soothe the skin, and document the incident

Stopping the service, soothing the skin, and documenting the reaction are the required professional steps to prioritize client safety.

Question 6: What does 'skin tenting' indicate during a waxing procedure?

The client has excessively oily skin
The hair is growing in multiple conflicting directions
The wax has cooled and hardened too rapidly
The skin is being lifted rather than just the hair, signaling a contraindication (Correct answer)

Correct answer: The skin is being lifted rather than just the hair, signaling a contraindication

Skin tenting — when skin rises with the wax strip — signals a contraindication such as skin thinned by medications, aging, or sun damage.

Question 7: How does the result of a depilatory cream compare to waxing?

Results are identical in duration
Results are shorter because depilatories only dissolve the hair at the surface, leaving the root intact (Correct answer)
Results last longer because depilatories remove the root
Depilatories cause permanent hair reduction over time

Correct answer: Results are shorter because depilatories only dissolve the hair at the surface, leaving the root intact

Because the follicle root is untouched, hair regrows as quickly as it does after shaving, making depilatory results shorter-lasting than waxing.

Question 8: What is the active ingredient in most chemical depilatory creams?

Thioglycolate (calcium or potassium thioglycolate) (Correct answer)
Benzoyl peroxide
Salicylic acid
Glycolic acid

Correct answer: Thioglycolate (calcium or potassium thioglycolate)

Thioglycolate compounds break the disulfide bonds in keratin, the protein that makes up hair, dissolving the hair shaft at the skin surface.

Question 9: Threading originated in which region of the world?

Middle East and South Asia (Correct answer)
Sub-Saharan Africa
Eastern Europe
South America

Correct answer: Middle East and South Asia

Threading has ancient roots in the Middle East and South Asia, where it has been practiced for centuries.

Question 10: Which professional credential is legally required to perform laser hair removal in most US states?

Only a cosmetology license is required nationwide
No credential required
Requirements vary by state and may include laser technician certification, esthetics license, or medical supervision (Correct answer)
A medical doctor license is required in all states

Correct answer: Requirements vary by state and may include laser technician certification, esthetics license, or medical supervision

US laser hair removal regulations are state-specific, ranging from no requirement to mandatory medical supervision depending on the state.

Question 11: How do depilatory creams remove facial hair?

By chemically breaking down the hair shaft so it can be wiped away (Correct answer)
By pulling the hair from the root
By destroying the hair follicle with heat
By cutting the hair with embedded microblades

Correct answer: By chemically breaking down the hair shaft so it can be wiped away

Depilatories dissolve the hair's keratin structure at or just below the skin surface, allowing it to be easily wiped off.

Question 12: What type of wax is applied in a thin layer and removed with a muslin or pellon strip?

Sugar wax
Soft wax (Correct answer)
Cold wax
Hard wax

Correct answer: Soft wax

Soft wax (strip wax) is spread thinly over the skin and removed using a fabric strip.

Question 13: What sanitation practice is essential for tweezers used in a professional facial hair removal setting?

Disinfecting with an EPA-registered disinfectant or autoclave sterilization between clients (Correct answer)
Rinsing with water after each use
Replacing tweezers monthly
Wiping with a paper towel between clients

Correct answer: Disinfecting with an EPA-registered disinfectant or autoclave sterilization between clients

Tweezers are semi-critical instruments that contact mucous membranes or non-intact skin and must be properly disinfected or sterilized between clients.

Question 14: What role does cooling play in laser hair removal devices used on the face?

It protects the epidermis from heat damage while the laser targets deeper follicles (Correct answer)
It helps the laser penetrate deeper
It increases laser power
It has no functional role

Correct answer: It protects the epidermis from heat damage while the laser targets deeper follicles

Integrated cooling systems (contact, cryogen spray, or air cooling) protect the surface skin while allowing higher fluences to reach the follicle.

Question 15: Which facial area is most commonly treated with dermaplaning for vellus hair removal?

Cheeks, forehead, and chin (the full face excluding brows) (Correct answer)
Nose and ears
Eyelids and under-eye area
Upper lip only

Correct answer: Cheeks, forehead, and chin (the full face excluding brows)

Dermaplaning is performed across the full face (excluding eyelids and eyebrows) to remove peach fuzz and exfoliate dead skin.

Question 16: What is the primary purpose of a patch test before applying a new depilatory product?

To determine the correct application timing
To test for allergic reactions or skin sensitivity before full application (Correct answer)
To check if the product removes hair effectively enough
To verify the product has not expired

Correct answer: To test for allergic reactions or skin sensitivity before full application

A patch test reveals potential allergic reactions or sensitivity to the product's ingredients before applying it to a larger, more visible area.

Question 17: What term describes the fine, soft, lightly pigmented facial hair removed by dermaplaning?

Lanugo hair
Intermediate hair
Vellus hair (Correct answer)
Terminal hair

Correct answer: Vellus hair

Vellus hair is the thin, soft, barely pigmented facial hair (peach fuzz) that dermaplaning removes along with dead skin cells.

Question 18: What is a key difference between threading and laser hair removal?

Threading is temporary; laser targets the follicle for long-term reduction (Correct answer)
Threading offers permanent results; laser is temporary
Both methods produce identical results
Laser is cheaper and quicker than threading

Correct answer: Threading is temporary; laser targets the follicle for long-term reduction

Threading provides temporary removal by pulling hair from the root, while laser treatments can permanently reduce hair growth over multiple sessions.

Question 19: How soon after waxing can most clients safely apply makeup to the treated facial area?

After 48-72 hours
After 30 minutes
Immediately after the service
After at least 24 hours (Correct answer)

Correct answer: After at least 24 hours

Waiting at least 24 hours reduces the risk of irritation, clogged pores, and bacterial infection on still-sensitized skin.

Question 20: How long should clients avoid direct sun exposure after facial waxing?

1 week
12 hours
24-48 hours (Correct answer)
30 minutes

Correct answer: 24-48 hours

Sun exposure within 24-48 hours after waxing can cause hyperpigmentation and damage on freshly sensitized skin.

Question 21: Which of the following is a common cause of skin lifting during a waxing service?

Using too little wax on the strip
Applying wax at room temperature
Removing the strip too slowly
Applying wax over skin treated with Retin-A (Correct answer)

Correct answer: Applying wax over skin treated with Retin-A

Retin-A (tretinoin) thins the skin significantly, making it extremely vulnerable to tearing and lifting when wax is applied.

Question 22: Which laser type is considered safest for darker Fitzpatrick skin types (IV–VI) for facial hair removal?

Nd:YAG (1064 nm) (Correct answer)
Ruby (694 nm)
Alexandrite (755 nm)
Diode (810 nm) at high fluence

Correct answer: Nd:YAG (1064 nm)

The Nd:YAG laser's longer wavelength bypasses melanin in the epidermis, making it safer for clients with more melanin in the skin.

Question 23: What product is most appropriate to apply immediately after waxing to calm redness?

Glycolic acid toner
Antiseptic spray or aloe vera gel (Correct answer)
Petroleum jelly
Heavy occlusive moisturizer

Correct answer: Antiseptic spray or aloe vera gel

Antiseptic spray or aloe vera gel soothes inflammation, reduces redness, and helps prevent infection on freshly waxed skin.

Question 24: Why does laser hair removal require multiple sessions?

Insurance requires multiple visits
Each session uses a different laser type
Hair only responds to laser during the active (anagen) growth phase (Correct answer)
The laser weakens with each use

Correct answer: Hair only responds to laser during the active (anagen) growth phase

Laser energy destroys follicles most effectively during the anagen phase, and not all hairs are in this phase simultaneously.

Question 25: What is the correct technique for applying soft wax on the upper lip?

Apply a thin layer in the direction of hair growth (Correct answer)
Apply against hair growth in circular strokes
Apply in vertical strips only
Apply in a thick layer, left to right

Correct answer: Apply a thin layer in the direction of hair growth

Soft wax is always applied thinly in the direction of hair growth to ensure proper adherence and controlled removal.

Question 26: Which of the following medications is a contraindication for facial waxing?

A daily multivitamin
An over-the-counter antihistamine
A topical moisturizer
Isotretinoin (Accutane) (Correct answer)

Correct answer: Isotretinoin (Accutane)

Isotretinoin (Accutane) dramatically thins the skin, making waxing extremely dangerous and likely to cause severe tearing and scarring.

Question 27: What is the most effective method to prevent ingrown hairs after facial hair removal?

Avoiding all skincare products
Applying ice packs daily
Regular gentle exfoliation (Correct answer)
Moisturizing with heavy creams

Correct answer: Regular gentle exfoliation

Regular gentle exfoliation removes dead skin cells that can trap newly growing hairs beneath the surface.

Question 28: What Fitzpatrick skin type classification describes the lightest skin tone that burns easily and rarely tans?

Type VI
Type I (Correct answer)
Type IV
Type III

Correct answer: Type I

Fitzpatrick Type I describes very fair skin with red or blond hair that burns easily and never tans.

Question 29: How does tweezing affect the hair growth cycle over time with repeated use?

It has no effect on future growth
Repeated tweezing can weaken the follicle and lead to finer, sparser regrowth over time (Correct answer)
It permanently destroys the follicle after a few sessions
It causes hair to grow back faster and thicker

Correct answer: Repeated tweezing can weaken the follicle and lead to finer, sparser regrowth over time

Chronic trauma to the follicle from repeated tweezing can disrupt the papilla over time, resulting in progressively finer regrowth.

Question 30: What is the correct method for sanitizing reusable metal implements used in facial hair removal?

Soak in plain water overnight
Autoclave or use an EPA-registered hospital-grade disinfectant (Correct answer)
Wipe with a dry cloth between each client
Spray with standard household cleaning spray

Correct answer: Autoclave or use an EPA-registered hospital-grade disinfectant

Reusable metal implements must be sterilized via autoclave or disinfected with an EPA-registered hospital-grade disinfectant to meet professional safety standards.

Question 31: What document must a licensed electrologist maintain for each facial hair removal client?

A government ID copy
Only a payment receipt
A client intake form and treatment record including medical history and consent (Correct answer)
A social media release form

Correct answer: A client intake form and treatment record including medical history and consent

Thorough intake forms and treatment records ensure client safety, track progress, and fulfill professional and legal documentation standards.

Question 32: Which skin prep step is most important immediately before applying wax to the face?

Applying moisturizer
Cleansing and drying the skin (Correct answer)
Steaming the face
Applying a thick layer of oil

Correct answer: Cleansing and drying the skin

The skin must be clean and completely dry so the wax adheres properly to the hair rather than slipping on oils or moisture.

Question 33: What is the recommended aftercare instruction for clients following a threading service?

Avoid touching the area and apply a soothing, fragrance-free product (Correct answer)
Apply a heavy foundation immediately
Exfoliate the area right away
Apply tanning lotion to minimize redness

Correct answer: Avoid touching the area and apply a soothing, fragrance-free product

Keeping hands away prevents bacterial contamination, and a calming product reduces post-threading redness.

Question 34: What should a laser technician do if a client reports taking a herbal supplement like St. John's Wort before a laser session?

Reschedule the appointment, as St. John's Wort is a photosensitizer (Correct answer)
Proceed with treatment at higher power
Proceed with lower power only on eyebrows
Ignore it, as herbal supplements don't affect laser

Correct answer: Reschedule the appointment, as St. John's Wort is a photosensitizer

St. John's Wort is a known photosensitizer that can cause severe skin reactions when combined with light-based treatments.

Question 35: Which method of hair removal is contraindicated in the weeks before a laser hair removal session?

Shaving
Waxing or threading (Correct answer)
Using depilatory cream
Trimming

Correct answer: Waxing or threading

Waxing and threading remove the hair root that the laser needs to target, so they must be avoided before treatment.

Question 36: What is a common sign of a wax burn on facial skin?

Blistering, raw or broken skin (Correct answer)
Slight tingling that resolves in an hour
Mild bump formation
Temporary redness that fades in minutes

Correct answer: Blistering, raw or broken skin

A true wax burn results in skin damage such as blistering or raw, broken areas that require first-aid treatment.

Question 37: How often can a client typically return for threading on the upper lip?

Every 2–4 weeks (Correct answer)
Once a year
Every 3–6 months
Every week

Correct answer: Every 2–4 weeks

Facial hair grows back in a 2–4 week cycle, making that the typical interval for threading maintenance.

Question 38: Which clients are most prone to developing ingrown hairs after facial hair removal?

Clients with fine, straight hair
Clients with oily skin
Clients with curly or coarse hair (Correct answer)
Clients with very dry skin

Correct answer: Clients with curly or coarse hair

Curly or coarse hair naturally curves and is more likely to re-enter the skin after removal, leading to ingrown hairs.

Question 39: During a client consultation for facial hair removal, which question is MOST critical to ask?

How often does the client exercise or sweat?
What is the client's preferred hair removal frequency?
Is the client using any medications or skincare products that affect the skin? (Correct answer)
What was the client's hair color in childhood?

Correct answer: Is the client using any medications or skincare products that affect the skin?

Medications like Retin-A, Accutane, or blood thinners can create serious contraindications and complications during hair removal services.

Question 40: In what direction should facial hair be shaved to reduce the risk of ingrown hairs?

Against the grain for the closest shave
Perpendicular to hair growth
In a circular motion
With the grain (in the direction of hair growth) (Correct answer)

Correct answer: With the grain (in the direction of hair growth)

Shaving with the grain reduces the likelihood of the hair tip being cut below the follicle opening, which causes ingrown hairs.

Question 41: What technique helps minimize pain when tweezing facial hair?

Pulling upward at a 45-degree angle regardless of hair direction
Pulling slowly in random directions
Tweezing after applying ice to numb the area permanently
Pulling quickly in the direction of hair growth while holding skin taut (Correct answer)

Correct answer: Pulling quickly in the direction of hair growth while holding skin taut

Holding the skin taut and pulling swiftly in the hair's natural growth direction reduces both pain and the risk of hair breakage.

Question 42: Which of the following is a contraindication for facial waxing?

Active acne or broken skin in the wax area (Correct answer)
Recently trimmed eyebrows
Normal oily skin
Fine peach fuzz hair

Correct answer: Active acne or broken skin in the wax area

Waxing over active acne or open lesions can spread bacteria, cause further irritation, and risk infection.

Question 43: Which hair removal method is recognized by the FDA as the only permanent method?

Laser hair removal
Electrolysis (Correct answer)
IPL (Intense Pulsed Light)
Waxing

Correct answer: Electrolysis

The FDA classifies electrolysis as the only truly permanent hair removal method because it permanently destroys each individual follicle.

Question 44: What typically causes contact dermatitis when using depilatory creams?

An allergic or irritant reaction to chemicals such as calcium thioglycolate (Correct answer)
The cream physically scraping away hair
Using the cream on insufficiently dry skin
The pH level of the cream alone

Correct answer: An allergic or irritant reaction to chemicals such as calcium thioglycolate

Contact dermatitis from depilatory creams is usually caused by an allergic or irritant response to calcium thioglycolate, the active hair-dissolving chemical.

Question 45: What is the primary risk of tweezing facial hair in the 'danger triangle' area (nose and upper lip region)?

Permanent nerve damage
Permanent hair loss
Increased risk of serious infection spreading to the brain due to venous drainage (Correct answer)
The hairs always grow back ingrown

Correct answer: Increased risk of serious infection spreading to the brain due to venous drainage

Veins in the danger triangle of the face drain toward the cavernous sinus, so infections from tweezing or picking in this area can theoretically travel to the brain.

Question 46: What aftercare instruction is most important immediately following a facial laser hair removal session?

Apply broad-spectrum SPF 30+ sunscreen and avoid sun exposure (Correct answer)
Apply retinol serum
Exfoliate the skin within 24 hours
Apply a chemical peel to boost results

Correct answer: Apply broad-spectrum SPF 30+ sunscreen and avoid sun exposure

Post-laser skin is highly photosensitive and must be protected from UV exposure to prevent hyperpigmentation and burns.

Question 47: Which electrolysis modality works fastest, making it preferred for large areas?

Flash thermolysis
Blend
Galvanic
Thermolysis (shortwave) (Correct answer)

Correct answer: Thermolysis (shortwave)

Thermolysis uses AC high-frequency current to rapidly generate heat in the follicle, allowing faster treatment than galvanic or blend methods.

Question 48: Which aftercare instruction is most appropriate for clients following a laser hair removal treatment?

Scrub the area vigorously to remove treated hairs faster
Use a gentle cleanser and apply broad-spectrum sunscreen outdoors (Correct answer)
Apply heat packs to accelerate the hair shedding process
Apply a tanning lotion to keep skin moisturized

Correct answer: Use a gentle cleanser and apply broad-spectrum sunscreen outdoors

After laser hair removal, gentle skincare and broad-spectrum sunscreen are essential to protect the photosensitized treated skin from UV damage.

Question 49: Can depilatory creams be used on skin that has a recent sunburn?

Yes, if a soothing formula is chosen
No, sunburned skin is already damaged and depilatories would cause further injury (Correct answer)
Yes, they are soothing on sunburned skin
Yes, if used for only half the recommended time

Correct answer: No, sunburned skin is already damaged and depilatories would cause further injury

Sunburned skin has a compromised barrier and is hypersensitive; applying a caustic depilatory would cause severe chemical burns.

Question 50: What is pseudofolliculitis barbae?

Ingrown hairs causing inflammatory papules, commonly known as razor bumps (Correct answer)
Excessive sebum production after hair removal
A severe allergic reaction to wax
A fungal infection of hair follicles

Correct answer: Ingrown hairs causing inflammatory papules, commonly known as razor bumps

Pseudofolliculitis barbae occurs when removed or shaved hairs curve back into the skin, producing inflammatory papules called razor bumps.

Question 51: What is post-inflammatory hyperpigmentation (PIH) in the context of hair removal?

Permanent discoloration requiring laser correction
Hives caused by an allergic reaction to wax
Darkening of the skin that occurs as a healing response to inflammation or injury (Correct answer)
Temporary redness lasting up to one hour

Correct answer: Darkening of the skin that occurs as a healing response to inflammation or injury

PIH is a darkening of the skin that results from the skin's healing response to inflammation, and is more common in deeper skin tones.

Question 52: What is a common temporary side effect of threading on facial skin?

Permanent scarring
Redness and minor swelling (Correct answer)
Darkening of the skin
Hair growing back coarser

Correct answer: Redness and minor swelling

The mechanical friction of threading typically causes temporary redness and mild swelling that subsides within hours.

Question 53: What is the key sanitation requirement for electrolysis probes?

Probes must be soaked in disinfectant for 10 minutes
Probes only need to be autoclaved monthly
Single-use, disposable sterile probes must be used for each client (Correct answer)
Probes can be reused after wiping with alcohol

Correct answer: Single-use, disposable sterile probes must be used for each client

Because probes penetrate the skin, single-use sterile probes are mandatory to prevent cross-contamination and blood-borne pathogen transmission.

Question 54: What distinguishes sugaring from traditional waxing as a hair removal method?

Sugaring is always applied cold like strip wax
Sugaring uses a paste made from sugar, lemon, and water and is removed in the direction of hair growth (Correct answer)
Sugaring permanently destroys the hair follicle
Sugaring uses synthetic resins like wax

Correct answer: Sugaring uses a paste made from sugar, lemon, and water and is removed in the direction of hair growth

Sugar paste is a natural, water-soluble blend removed by flicking it against hair growth, but it is applied in the opposite direction and can be rinsed with water.

Question 55: What is a potential side effect of laser hair removal on facial skin?

Temporary redness, swelling, and mild discomfort (Correct answer)
Immediate permanent scarring
Permanent freckles
Increased hair growth

Correct answer: Temporary redness, swelling, and mild discomfort

Erythema (redness) and edema (swelling) are normal, expected reactions that typically resolve within 24–48 hours.

Question 56: What aftercare step is most important after removing a facial depilatory cream?

Apply retinol serum to boost cell turnover
Rinse thoroughly with cool water and apply a soothing, fragrance-free moisturizer (Correct answer)
Immediately apply exfoliating scrub
Apply glycolic acid to prevent ingrown hairs

Correct answer: Rinse thoroughly with cool water and apply a soothing, fragrance-free moisturizer

Thorough rinsing removes all alkaline residue, and a soothing moisturizer helps calm the chemically exposed skin.

Question 57: What is the risk of sharing tweezers between clients in a professional salon?

Hair regrowth complications
Dulling of the tweezer tips
Cross-contamination of bacteria, viruses, and blood-borne pathogens (Correct answer)
No significant risk

Correct answer: Cross-contamination of bacteria, viruses, and blood-borne pathogens

Tweezers can contact blood or follicle fluid during use, making them vectors for pathogen transmission if not properly disinfected.

Question 58: What condition is a medical contraindication for electrolysis on the face?

Oily skin
Having previously waxed
Having a pacemaker or implanted cardiac device (Correct answer)
Normal skin sensitivity

Correct answer: Having a pacemaker or implanted cardiac device

Electrical current used in electrolysis can interfere with pacemakers and other electronic implants, posing a serious health risk.

Question 59: Which skin type is at higher risk for post-wax hyperpigmentation on the face?

Fair skin with no sun exposure
Darker skin tones (Fitzpatrick IV–VI) (Correct answer)
Skin with large pores
Dry skin with no history of sensitivity

Correct answer: Darker skin tones (Fitzpatrick IV–VI)

Darker skin tones are more prone to post-inflammatory hyperpigmentation after any skin trauma, including waxing.

Question 60: What does 'paradoxical hypertrichosis' mean in the context of laser hair removal?

Darkening of existing hair after laser
Normal hair shedding after treatment
Unwanted stimulation of hair growth triggered by laser treatment (Correct answer)
Complete removal of all hair in the area

Correct answer: Unwanted stimulation of hair growth triggered by laser treatment

Paradoxical hypertrichosis is a rare side effect where laser treatment triggers increased hair growth, more common in darker skin types.

Question 61: What is a key benefit of sugaring paste over traditional wax for facial hair removal?

It is faster than laser
It is water-soluble, all-natural, and less likely to irritate sensitive skin or cause allergic reactions (Correct answer)
It permanently removes hair after one session
It always requires a strip for removal

Correct answer: It is water-soluble, all-natural, and less likely to irritate sensitive skin or cause allergic reactions

Sugar paste contains no resins, artificial ingredients, or harsh chemicals, making it less likely to cause allergic reactions on sensitive facial skin.

Question 62: What is the proper technique for removing a wax strip to minimize skin trauma?

Pull at a 45-degree angle in any direction
Pull slowly and parallel to the skin in the direction of growth
Pull upward at a 90-degree angle slowly
Pull quickly and parallel to the skin, opposite the direction of hair growth (Correct answer)

Correct answer: Pull quickly and parallel to the skin, opposite the direction of hair growth

Pulling quickly and parallel to the skin in the opposite direction of hair growth minimizes bruising, trauma, and the risk of skin lifting.

Question 63: What is one major limitation of threading as a facial hair removal method?

It requires expensive equipment
It cannot be used on the upper lip
It can only be done once per month
It requires a highly skilled technician and has a learning curve (Correct answer)

Correct answer: It requires a highly skilled technician and has a learning curve

Threading requires significant practice to master the hand coordination needed for precise, effective results.

Question 64: Which skincare ingredient should be avoided on freshly waxed skin?

Aloe vera
Witch hazel
Alpha hydroxy acids (AHAs) (Correct answer)
Chamomile extract

Correct answer: Alpha hydroxy acids (AHAs)

AHAs are exfoliating acids that can cause severe irritation or chemical burns when applied to sensitized, post-wax skin.

Question 65: Why does shaved facial hair appear thicker or darker when it regrows?

Shaving causes the follicle to produce more hair
The blunt cut end of the hair is wider than the naturally tapered tip, creating the illusion of thickness (Correct answer)
Shaving activates more melanin in the follicle
Razor blades dye the hair darker

Correct answer: The blunt cut end of the hair is wider than the naturally tapered tip, creating the illusion of thickness

Shaving cuts the tapered tip of the hair, leaving a blunt edge that feels and looks coarser, but the hair itself is unchanged.

Question 66: In galvanic electrolysis, what chemical reaction destroys the hair follicle?

Protein denaturation from heat
Lye (sodium hydroxide) formation through electrolytic decomposition of body salts (Correct answer)
Hydrogen peroxide release
Oxidation of melanin

Correct answer: Lye (sodium hydroxide) formation through electrolytic decomposition of body salts

Direct current in galvanic electrolysis causes electrolysis of salt water in the follicle, producing sodium hydroxide (lye) that destroys the germinal cells.

Question 67: In the US, does threading typically require a cosmetology or esthetics license?

Only a business license is needed
Licensing requirements vary by state (Correct answer)
No license is ever required
A medical license is always required

Correct answer: Licensing requirements vary by state

Threading licensing regulations differ from state to state, with some requiring a cosmetology or esthetics license and others having no requirement.

Question 68: Can dermaplaning be performed on clients with active acne?

Yes, it helps clear acne lesions
No, the blade can spread bacteria and cause further breakouts (Correct answer)
Yes, but only on the forehead
Only if numbing cream is applied first

Correct answer: No, the blade can spread bacteria and cause further breakouts

Dermaplaning over active acne can rupture lesions, spread bacteria across the face, and worsen breakouts.

Question 69: Why is understanding hair growth cycles important when planning permanent hair removal treatments?

Catagen phase hair is easiest to target with waxing
Hair in the active anagen phase responds best to permanent removal methods (Correct answer)
Hair growth cycles have no significant effect on treatment outcomes
Telogen phase hair provides the best target for laser treatments

Correct answer: Hair in the active anagen phase responds best to permanent removal methods

Hair in the active anagen (growth) phase has the most metabolically active follicles, making it most responsive to laser and electrolysis treatments.

Question 70: Which facial area should be avoided when using depilatory creams due to risk of serious injury?

Eyelids, inside the nostrils, and mucous membrane areas (Correct answer)
Upper lip (outer only)
Forehead
Cheeks

Correct answer: Eyelids, inside the nostrils, and mucous membrane areas

Depilatories near the eyes, inside the nose, or on mucous membranes can cause severe chemical burns or damage to sensitive tissue.

NIC National Hair Removal Theory Examination

The NIC Hair Removal Theory Examination tests candidates on the scientific knowledge and practical service skills required for hair removal licensing, including infection control, skin anatomy, and all major depilatory methods such as waxing, threading, tweezing, laser, and chemical treatments.

Questions

90 min

Time Limit

75%

To Pass

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