LASER HAIR REMOVAL EXAM
QUESTIONS WITH CORRECT ANSWERS
Why is shaving between treatments ideal for laser hair removal? - Answer-Because hair
grows in different stages, the best way to eliminate hair is to get it treated when it is
actively growing. Shave until the hair has finally stopped growing back.
After treatment, completely shave all the hairs away. Anything left will cause irritation or
surface burns
Hirsutism - Answer--Excessive and increased hair growth in women's in locations where
the occurrence of terminal hair normally is minimal or absent.
-It is a male pattern of body hair (androgenic hair)
Explain the difference between IPL and Laser, at least 3 points for each - Answer-IPL
-Non-coherent
-Unfocused
-Intense pulse light devices are non -laser high-intensity light sources that make use of
high-output flash lamps to produce a broad wavelength output of non -coherent light
usually in the 1200 nm range.
-Light pulses are produced by bursts of electrical current passing through a xenon gas-
filled chamber.
The advantage of the IPL platform is they have a bigger spot size. So the tech can finish
the treatment a lot faster
lASER
-Monochromatic
-Coherent
-Focused
A direct beam of light. The light is energy. All true lasers emit resonant or highly
coherent wavelengths.
Because photons are travelling side by side, in parallel, the light can travel for very long
distances before terminating. The laser light can fire across the room, reflect off tiny
surfaces, go through an open door into the clinic, or pass out through an uncovered
window.
Contraindications for laser treatment (9) - Answer--Eyebrows
-Mucous membrane areas
-Sensitive, reactive skin, heat sensitive skin, miliaria rubra
-Pregnancy
-Skin cancer
-Abnormal growths
-Herpes simplex 1 and 2
, -Tattoos
-Permanent makeup
-Photosensitizing medications
List main information about the hair and skin that need to be analyzed before treatment
- Answer-Analyzing hair- diameter (size), colour, density and depth. The colour will
determine which fluence level you should use.
Analyzing skin- colour, Fitzpatrick type, sensitivity and condition. Check the skin for any
abnormalities.
What causes side effects (6) - Answer--The hair is too long
-Pulses are overlapping
-Rows are overlapping
-Poor cooling technique
-Incorrect assessment of sun type
-Incorrect assessment of hair density
-Incorrect assessment of hair colour
Structures of terminal hair - Answer--Deeply situated, coarse hairs
-Have a well-developed root and bulb
-Definite pigmentation
-They grow from a follicle
-They have 3 concentric layers: cuticle, cortex and medulla
Pilosebaceous system - Answer-Hair shaft, hair follicle, sebaceous glands.
Saftey precautions (6) - Answer--Goggles and eye shields
-Laser in use warning side outside the door of the room
-Locked door
-Minimize reflective surfaces
-Patient and laser tech only
-Hand piece kept downwards
Depilation vs epilation methods - Answer--Depilation methods are the removal of hair
from the surface of the skin
-Laser, shaving, trimming, chemical depilatory. Epilition methods remove the hair from
the root such as threading, waxing, plucking, sugaring.
Pulse width - Answer--pulse is how long the laser is actually on the skin and it
determines the clinical effect of the light energy. It is measured in nanoseconds or
milliseconds.
-The pulse width is a measure of the elapsed time between the leading and trailing
edges of a single pulse of energy.
Fluence - Answer-The amount of laser energy
QUESTIONS WITH CORRECT ANSWERS
Why is shaving between treatments ideal for laser hair removal? - Answer-Because hair
grows in different stages, the best way to eliminate hair is to get it treated when it is
actively growing. Shave until the hair has finally stopped growing back.
After treatment, completely shave all the hairs away. Anything left will cause irritation or
surface burns
Hirsutism - Answer--Excessive and increased hair growth in women's in locations where
the occurrence of terminal hair normally is minimal or absent.
-It is a male pattern of body hair (androgenic hair)
Explain the difference between IPL and Laser, at least 3 points for each - Answer-IPL
-Non-coherent
-Unfocused
-Intense pulse light devices are non -laser high-intensity light sources that make use of
high-output flash lamps to produce a broad wavelength output of non -coherent light
usually in the 1200 nm range.
-Light pulses are produced by bursts of electrical current passing through a xenon gas-
filled chamber.
The advantage of the IPL platform is they have a bigger spot size. So the tech can finish
the treatment a lot faster
lASER
-Monochromatic
-Coherent
-Focused
A direct beam of light. The light is energy. All true lasers emit resonant or highly
coherent wavelengths.
Because photons are travelling side by side, in parallel, the light can travel for very long
distances before terminating. The laser light can fire across the room, reflect off tiny
surfaces, go through an open door into the clinic, or pass out through an uncovered
window.
Contraindications for laser treatment (9) - Answer--Eyebrows
-Mucous membrane areas
-Sensitive, reactive skin, heat sensitive skin, miliaria rubra
-Pregnancy
-Skin cancer
-Abnormal growths
-Herpes simplex 1 and 2
, -Tattoos
-Permanent makeup
-Photosensitizing medications
List main information about the hair and skin that need to be analyzed before treatment
- Answer-Analyzing hair- diameter (size), colour, density and depth. The colour will
determine which fluence level you should use.
Analyzing skin- colour, Fitzpatrick type, sensitivity and condition. Check the skin for any
abnormalities.
What causes side effects (6) - Answer--The hair is too long
-Pulses are overlapping
-Rows are overlapping
-Poor cooling technique
-Incorrect assessment of sun type
-Incorrect assessment of hair density
-Incorrect assessment of hair colour
Structures of terminal hair - Answer--Deeply situated, coarse hairs
-Have a well-developed root and bulb
-Definite pigmentation
-They grow from a follicle
-They have 3 concentric layers: cuticle, cortex and medulla
Pilosebaceous system - Answer-Hair shaft, hair follicle, sebaceous glands.
Saftey precautions (6) - Answer--Goggles and eye shields
-Laser in use warning side outside the door of the room
-Locked door
-Minimize reflective surfaces
-Patient and laser tech only
-Hand piece kept downwards
Depilation vs epilation methods - Answer--Depilation methods are the removal of hair
from the surface of the skin
-Laser, shaving, trimming, chemical depilatory. Epilition methods remove the hair from
the root such as threading, waxing, plucking, sugaring.
Pulse width - Answer--pulse is how long the laser is actually on the skin and it
determines the clinical effect of the light energy. It is measured in nanoseconds or
milliseconds.
-The pulse width is a measure of the elapsed time between the leading and trailing
edges of a single pulse of energy.
Fluence - Answer-The amount of laser energy
