ELECTROLYSIS IBEC 2026 TEST PAPER QUESTIONS AND
ANSWERS RATED A+
✔✔What are the parameters when doing laser hair removal? - ✔✔Wavelength
Spot Size
Fluence
Pulse Width
✔✔Pulsed lasers allow for selective heating of specific targets, this is also known as? -
✔✔Selective Photothermolysis
✔✔The rate/amount of energy delivered within a given area is known as? - ✔✔Fluence
✔✔An increase in fluence equals an increase in what? - ✔✔Heat. Resulting in more
damage
✔✔The length of time the light/energy is in contact with the target that is measured in
milliseconds (ms): - ✔✔Pulse width/Pulse duration
✔✔If the time of pulse duration is changed from milliseconds to nanoseconds the laser
is what? - ✔✔Q Switched
✔✔A Q switched laser is used for what? - ✔✔Tattoo removal
✔✔Which skin types can tolerate an Alex laser? - ✔✔1-4
✔✔Which skin types can tolerate a Nd:YAG laser? - ✔✔All skin types
✔✔Which skin type should only have electrolysis and no laser? - ✔✔Type 1
✔✔If the pulse width is greater than the thermal relaxation time it results in? - ✔✔A burn
✔✔If the pulse width is less than or equal to the thermal relaxation time it results in? -
✔✔Perfect hair removal
✔✔Larger structures have __________ thermal relaxation times (TRT) - ✔✔Longer
✔✔Smaller structures have _______ thermal relaxation times (TRT) - ✔✔Shorter
✔✔What kind of pulse widths protect the epidermis, penetrate deeper and cool more
slowly? - ✔✔Long
✔✔Longer pulse widths are for what skin type? - ✔✔4-6
,✔✔What kind of pulse widths are more aggressive and heat up and cool down quickly?
- ✔✔Short
✔✔Shorter pulse widths are for what skin type? - ✔✔1-3
✔✔What percentage of follicles are damaged with each laser treatment? - ✔✔15%
✔✔What is a long-term stable reduction of the growing hairs after a treatment regime? -
✔✔Laser Hair Removal (LHR)
✔✔What does the FDA call laser hair removal? - ✔✔Permanent hair reduction
✔✔What is the highest setting the skin can tolerate without damage called? -
✔✔Fluence Threshold
✔✔What is the highest setting the patient can tolerate without the treatment becoming
impossible called? - ✔✔Patient Threshold
✔✔The amount of hair per one square centimeter is known as? - ✔✔Hair density
✔✔The higher the hair density, the _______ the fluence? - ✔✔Lower
✔✔What percentage of overlapping do you want when doing LHR? - ✔✔30%
✔✔Darker/tanned skin requires what kind of fluence? - ✔✔Lower
✔✔What should you never use to clean a patient's skin prior to LHR? - ✔✔Alcohol
✔✔Pulse duration is measured in what unit? - ✔✔milliseconds (ms)
✔✔Spot size is measured in what unit? - ✔✔millimeters (mm)
✔✔Repetition rate is measured in what unit? - ✔✔hertz (Hz)
✔✔Who is the grandfather of laser and was the first person to use water to cool the skin
during laser? - ✔✔Rox Anderson
✔✔The formula for fluence is? - ✔✔Joules = J/cm2
✔✔What kind of lasers allow for selective heating of specific targets? - ✔✔Selective
photothermolysis
, ✔✔For deeper laser penetration what should the practitioner do to the laser? -
✔✔Change to a bigger spot size
✔✔The primary reason for using cooling devices during laser hair removal is? -
✔✔Allows for higher and more effective fluences to be used while sparing the epidermis
✔✔During the initial consultation, the patient should be informed that the process will
take how long for laser hair removal? - ✔✔A series of treatments
✔✔The principle that says energy must be absorbed by an object in order to produce an
effect is called? - ✔✔Grotthuss-Draper law
✔✔What is laser light? - ✔✔Monochromatic light
✔✔Laser is equivalent to which of the following modalities? - ✔✔Thermolysis
✔✔An element has the ability to produce laser when it is in which state? -
✔✔Metastable state
✔✔What are the positive reactions to the skin indicating a successful LHR treatment? -
✔✔Perifollicular erythema, perifollicular edema
✔✔Incandescent light is an example of? - ✔✔Incoherent light
✔✔A requirement for foot switches that directly pulse the laser is that they be? -
✔✔Hooded
✔✔The effect of skin turning red after treatment is referred to as? - ✔✔Erythema
✔✔An over treatment of the skin characterized by blistering or epidermal separation,
caused by lateral pressure on the skin is known as? - ✔✔Nikolski Sign
✔✔When tissue has been injured, fluid escapes the blood vessels to surround the
damaged tissue. This is referred to as? - ✔✔Edema
✔✔The common type of laser used for hair removal is? - ✔✔Pulsed
✔✔Total destruction of tissue using laser energy is known as? - ✔✔photoablation
✔✔Laser is ineffective on hair that has? - ✔✔Little to no pigment
✔✔The energy level of a laser, measured in joules is known as? - ✔✔Energy fluence
ANSWERS RATED A+
✔✔What are the parameters when doing laser hair removal? - ✔✔Wavelength
Spot Size
Fluence
Pulse Width
✔✔Pulsed lasers allow for selective heating of specific targets, this is also known as? -
✔✔Selective Photothermolysis
✔✔The rate/amount of energy delivered within a given area is known as? - ✔✔Fluence
✔✔An increase in fluence equals an increase in what? - ✔✔Heat. Resulting in more
damage
✔✔The length of time the light/energy is in contact with the target that is measured in
milliseconds (ms): - ✔✔Pulse width/Pulse duration
✔✔If the time of pulse duration is changed from milliseconds to nanoseconds the laser
is what? - ✔✔Q Switched
✔✔A Q switched laser is used for what? - ✔✔Tattoo removal
✔✔Which skin types can tolerate an Alex laser? - ✔✔1-4
✔✔Which skin types can tolerate a Nd:YAG laser? - ✔✔All skin types
✔✔Which skin type should only have electrolysis and no laser? - ✔✔Type 1
✔✔If the pulse width is greater than the thermal relaxation time it results in? - ✔✔A burn
✔✔If the pulse width is less than or equal to the thermal relaxation time it results in? -
✔✔Perfect hair removal
✔✔Larger structures have __________ thermal relaxation times (TRT) - ✔✔Longer
✔✔Smaller structures have _______ thermal relaxation times (TRT) - ✔✔Shorter
✔✔What kind of pulse widths protect the epidermis, penetrate deeper and cool more
slowly? - ✔✔Long
✔✔Longer pulse widths are for what skin type? - ✔✔4-6
,✔✔What kind of pulse widths are more aggressive and heat up and cool down quickly?
- ✔✔Short
✔✔Shorter pulse widths are for what skin type? - ✔✔1-3
✔✔What percentage of follicles are damaged with each laser treatment? - ✔✔15%
✔✔What is a long-term stable reduction of the growing hairs after a treatment regime? -
✔✔Laser Hair Removal (LHR)
✔✔What does the FDA call laser hair removal? - ✔✔Permanent hair reduction
✔✔What is the highest setting the skin can tolerate without damage called? -
✔✔Fluence Threshold
✔✔What is the highest setting the patient can tolerate without the treatment becoming
impossible called? - ✔✔Patient Threshold
✔✔The amount of hair per one square centimeter is known as? - ✔✔Hair density
✔✔The higher the hair density, the _______ the fluence? - ✔✔Lower
✔✔What percentage of overlapping do you want when doing LHR? - ✔✔30%
✔✔Darker/tanned skin requires what kind of fluence? - ✔✔Lower
✔✔What should you never use to clean a patient's skin prior to LHR? - ✔✔Alcohol
✔✔Pulse duration is measured in what unit? - ✔✔milliseconds (ms)
✔✔Spot size is measured in what unit? - ✔✔millimeters (mm)
✔✔Repetition rate is measured in what unit? - ✔✔hertz (Hz)
✔✔Who is the grandfather of laser and was the first person to use water to cool the skin
during laser? - ✔✔Rox Anderson
✔✔The formula for fluence is? - ✔✔Joules = J/cm2
✔✔What kind of lasers allow for selective heating of specific targets? - ✔✔Selective
photothermolysis
, ✔✔For deeper laser penetration what should the practitioner do to the laser? -
✔✔Change to a bigger spot size
✔✔The primary reason for using cooling devices during laser hair removal is? -
✔✔Allows for higher and more effective fluences to be used while sparing the epidermis
✔✔During the initial consultation, the patient should be informed that the process will
take how long for laser hair removal? - ✔✔A series of treatments
✔✔The principle that says energy must be absorbed by an object in order to produce an
effect is called? - ✔✔Grotthuss-Draper law
✔✔What is laser light? - ✔✔Monochromatic light
✔✔Laser is equivalent to which of the following modalities? - ✔✔Thermolysis
✔✔An element has the ability to produce laser when it is in which state? -
✔✔Metastable state
✔✔What are the positive reactions to the skin indicating a successful LHR treatment? -
✔✔Perifollicular erythema, perifollicular edema
✔✔Incandescent light is an example of? - ✔✔Incoherent light
✔✔A requirement for foot switches that directly pulse the laser is that they be? -
✔✔Hooded
✔✔The effect of skin turning red after treatment is referred to as? - ✔✔Erythema
✔✔An over treatment of the skin characterized by blistering or epidermal separation,
caused by lateral pressure on the skin is known as? - ✔✔Nikolski Sign
✔✔When tissue has been injured, fluid escapes the blood vessels to surround the
damaged tissue. This is referred to as? - ✔✔Edema
✔✔The common type of laser used for hair removal is? - ✔✔Pulsed
✔✔Total destruction of tissue using laser energy is known as? - ✔✔photoablation
✔✔Laser is ineffective on hair that has? - ✔✔Little to no pigment
✔✔The energy level of a laser, measured in joules is known as? - ✔✔Energy fluence
