CLT Hair Removal Laser Procedures 3 — Questions and Answers
Question 1: A patient is taking isotretinoin (Accutane) for acne. What is the standard recommendation regarding laser hair removal?
- Proceed normally as isotretinoin does not affect laser outcomes
- Postpone treatment until 6 months after discontinuing isotretinoin (Correct answer)
- Reduce fluence by 20% but continue treatment
- Switch to IPL instead of laser while on isotretinoin
Correct answer: Postpone treatment until 6 months after discontinuing isotretinoin
Isotretinoin impairs wound healing and increases scarring risk; the standard guideline is to wait at least 6 months after the patient stops the medication.
Question 2: What does the term 'spot size' refer to in laser hair removal, and how does increasing it affect penetration depth?
- The size of the treatment area; larger spots decrease penetration
- The diameter of the laser beam; larger spots allow deeper penetration due to reduced scatter (Correct answer)
- The number of pulses per session; more pulses increase depth
- The cooling pad size; larger pads reduce penetration depth
Correct answer: The diameter of the laser beam; larger spots allow deeper penetration due to reduced scatter
A larger spot size reduces lateral photon scatter, allowing more photons to travel straight down and achieve greater penetration depth into the dermis.
Question 3: Which of the following best describes 'fluence' in the context of laser hair removal?
- The number of pulses delivered per second
- The energy delivered per unit area, expressed in J/cm² (Correct answer)
- The wavelength range of the laser beam
- The speed at which the handpiece is moved across the skin
Correct answer: The energy delivered per unit area, expressed in J/cm²
Fluence is the energy density (J/cm²) delivered to the skin surface and is a primary parameter determining treatment efficacy and safety.
Question 4: During a laser hair removal consultation, a patient reveals they have polycystic ovary syndrome (PCOS). What should the technician communicate?
- PCOS has no effect on laser hair removal outcomes
- Hormonal imbalances from PCOS may cause hair regrowth despite successful treatments, requiring more sessions (Correct answer)
- Patients with PCOS cannot undergo laser hair removal
- PCOS requires higher laser fluence settings to achieve results
Correct answer: Hormonal imbalances from PCOS may cause hair regrowth despite successful treatments, requiring more sessions
PCOS causes androgen-driven hair growth, meaning that even after successful follicle destruction, hormonal stimulation can activate dormant follicles and reduce long-term results.
Question 5: What is the purpose of performing a test patch before a full laser hair removal treatment?
- To calculate the exact number of sessions the patient will need
- To assess the patient's skin reaction, determine safe parameters, and identify adverse response risk (Correct answer)
- To map out which hair follicles are in the anagen phase
- To confirm the laser equipment is functioning at full power
Correct answer: To assess the patient's skin reaction, determine safe parameters, and identify adverse response risk
A test patch evaluates how an individual's skin responds to specific laser parameters, helping to identify the safest effective settings before treating a large area.
Question 6: What side effect is considered NORMAL immediately following a laser hair removal session?
- Blistering and open wounds
- Perifollicular edema and erythema (redness around hair follicles) (Correct answer)
- Permanent hypopigmentation
- Crusting and scabbing over the entire treatment area
Correct answer: Perifollicular edema and erythema (redness around hair follicles)
Perifollicular edema and erythema are expected signs of follicular thermal injury indicating successful targeting, and they typically resolve within hours to days.
Question 7: Why is shaving the treatment area recommended 24–48 hours before a laser hair removal session rather than waxing or plucking?
- Shaving makes hair thicker so the laser can detect it more easily
- Waxing and plucking remove the follicle's pigment from the dermis, eliminating the laser target (Correct answer)
- Shaving reduces the risk of patient discomfort during treatment
- Waxing opens pores and increases the risk of laser-induced burns
Correct answer: Waxing and plucking remove the follicle's pigment from the dermis, eliminating the laser target
Waxing and plucking remove the hair shaft and temporarily clear melanin from the follicle, leaving no chromophore for the laser to target; shaving leaves the follicle intact below the skin.
CLT Hair Removal Laser Procedures 3
A patient is taking isotretinoin (Accutane) for acne.
What is the standard recommendation regarding laser hair removal?