LASER HAIR REMOVAL LATEST 2026 EXAM QUESTIONS
AND ANSWERS GRADED A+
✔✔What makes the IPL different than a laser? - ✔✔Doesn't get as much absorption as
laser and is polychromatic, incoherent, and non collimated
✔✔What is a tattoo removal laser? - ✔✔Q-switched laser
✔✔How is a Q-switched laser different than an Alex or a Nd:Yag laser? - ✔✔It delivers
the energy in a nano second and is photoacoustic
✔✔What is a nanometer? - ✔✔Measurement of light energy
✔✔What is photothermolysis? - ✔✔Destruction of a target by selective absorption of
light energy
✔✔What is a chromophore? - ✔✔The target of light. Blood, melanin, and water
✔✔What is phagocytosis? - ✔✔Physiological process by which the body absorbs and
eliminates the destroyed target
✔✔What is selective photothermolysis? - ✔✔Laser light of a specific target containing
the adequate chromophore withe damaging the surrounding tissue.
✔✔What is thermal relaxation time? - ✔✔Time it takes for the tissue to cool down and
dissipate to surrounding skin
✔✔What are the 4 basic laser parameters? - ✔✔Wavelength, pulse duration, spot size,
and fluence
✔✔What is the pulse duration? - ✔✔Duration of each laser pulse
✔✔What is the pulse duration of a 755nm laser? - ✔✔3ms
✔✔What is the pulse duration of a 1064nm laser? - ✔✔Varies from 3ms to 20ms
✔✔What do long pulses target? - ✔✔Thick hair
✔✔What do short pulses target? - ✔✔Fine hair
✔✔What is the significance of a larger spot size? - ✔✔The energy is delivered and
absorbed at a deeper level
, ✔✔What is the significance of a smaller spot size? - ✔✔Has more energy but is
scattered
✔✔What spot size has more energy? - ✔✔Small spot size
✔✔What is fluence? - ✔✔Rate of energy delivered to area
✔✔What is photothermal? - ✔✔Light energy transformed and dissipated as heat
✔✔What is photoacoustic? - ✔✔Energy delivered so fast a shock wave is created
✔✔What is a q-switched laser? - ✔✔Tattoo removal laser
✔✔What type of laser is a tattoo removal laser? - ✔✔Q-switched, photoacoustic
✔✔What is photochemical? - ✔✔Light energy that starts a chemical reaction
✔✔What is photoablation? - ✔✔Heats so quickly and thoroughly the tissue is ablated
✔✔What are the laser tissue interactions? - ✔✔Photoacoustic, photothermal,
photoablative, photochemical
✔✔What type of laser do we use? - ✔✔Photothermal
✔✔What are the 4 basic components to a laser? - ✔✔Optical cavity, laser medium,
power source, delivery system
✔✔What type of crystals in the laser medium are in a Nd:Yag laser? - ✔✔Garnet
✔✔What is the substance of our lasers that produces the laser beam? - ✔✔Solid
✔✔What determines the wavelength of the laser? - ✔✔Lasing medium
✔✔What is the dynamic cooling device? - ✔✔Cryogen spray that sprays out just prior to
the laser being fired
✔✔What power source do our lasers use? - ✔✔A 220 electric line
✔✔Are our optical fibers smooth or reflective - ✔✔Smooth
✔✔What is the delivery system that our lasers use? - ✔✔Optical fibers
✔✔What does ANSI stand for? - ✔✔American national standards institute
AND ANSWERS GRADED A+
✔✔What makes the IPL different than a laser? - ✔✔Doesn't get as much absorption as
laser and is polychromatic, incoherent, and non collimated
✔✔What is a tattoo removal laser? - ✔✔Q-switched laser
✔✔How is a Q-switched laser different than an Alex or a Nd:Yag laser? - ✔✔It delivers
the energy in a nano second and is photoacoustic
✔✔What is a nanometer? - ✔✔Measurement of light energy
✔✔What is photothermolysis? - ✔✔Destruction of a target by selective absorption of
light energy
✔✔What is a chromophore? - ✔✔The target of light. Blood, melanin, and water
✔✔What is phagocytosis? - ✔✔Physiological process by which the body absorbs and
eliminates the destroyed target
✔✔What is selective photothermolysis? - ✔✔Laser light of a specific target containing
the adequate chromophore withe damaging the surrounding tissue.
✔✔What is thermal relaxation time? - ✔✔Time it takes for the tissue to cool down and
dissipate to surrounding skin
✔✔What are the 4 basic laser parameters? - ✔✔Wavelength, pulse duration, spot size,
and fluence
✔✔What is the pulse duration? - ✔✔Duration of each laser pulse
✔✔What is the pulse duration of a 755nm laser? - ✔✔3ms
✔✔What is the pulse duration of a 1064nm laser? - ✔✔Varies from 3ms to 20ms
✔✔What do long pulses target? - ✔✔Thick hair
✔✔What do short pulses target? - ✔✔Fine hair
✔✔What is the significance of a larger spot size? - ✔✔The energy is delivered and
absorbed at a deeper level
, ✔✔What is the significance of a smaller spot size? - ✔✔Has more energy but is
scattered
✔✔What spot size has more energy? - ✔✔Small spot size
✔✔What is fluence? - ✔✔Rate of energy delivered to area
✔✔What is photothermal? - ✔✔Light energy transformed and dissipated as heat
✔✔What is photoacoustic? - ✔✔Energy delivered so fast a shock wave is created
✔✔What is a q-switched laser? - ✔✔Tattoo removal laser
✔✔What type of laser is a tattoo removal laser? - ✔✔Q-switched, photoacoustic
✔✔What is photochemical? - ✔✔Light energy that starts a chemical reaction
✔✔What is photoablation? - ✔✔Heats so quickly and thoroughly the tissue is ablated
✔✔What are the laser tissue interactions? - ✔✔Photoacoustic, photothermal,
photoablative, photochemical
✔✔What type of laser do we use? - ✔✔Photothermal
✔✔What are the 4 basic components to a laser? - ✔✔Optical cavity, laser medium,
power source, delivery system
✔✔What type of crystals in the laser medium are in a Nd:Yag laser? - ✔✔Garnet
✔✔What is the substance of our lasers that produces the laser beam? - ✔✔Solid
✔✔What determines the wavelength of the laser? - ✔✔Lasing medium
✔✔What is the dynamic cooling device? - ✔✔Cryogen spray that sprays out just prior to
the laser being fired
✔✔What power source do our lasers use? - ✔✔A 220 electric line
✔✔Are our optical fibers smooth or reflective - ✔✔Smooth
✔✔What is the delivery system that our lasers use? - ✔✔Optical fibers
✔✔What does ANSI stand for? - ✔✔American national standards institute
