Laser Certification Exam 2025
Questions and Answers 100% Pass
What is the type of laser used most for LHR treatments? - ✔✔Long Pulse
What is the only growth stage a hair follicle can be disabled with a laser? - ✔✔Anagen
When lowering the spot size during LHR treatments, the CLS should also... -
✔✔Increase energy
What lasers wavelength are generally used in LHR treatments? - ✔✔755nm, 810nm,
1064nm
What does the spot size (SS) setting account for in regard to a LHR treatment? -
✔✔Depth
What does the fluence (J/cm2) setting account for in regard to LTR treatment? -
✔✔energy
What is the chromophore in LHR for light skin clients? - ✔✔Melanin
What does the fluence (J/cm2) setting account for in regard to LHR treatment? -
✔✔Energy
Lighter color and finer hair produces more effective LHR treatments - ✔✔False
COPYRIGHT © 2025 BY GRACE AMELIA, ALL RIGHTS RESERVED 1
, If a patient tweezes their chin every day, will a LHR treatment provide any results? -
✔✔Yes
Making the pulse duration longer will make LHR treatments _______ - ✔✔More
comfortable
The acronym for LASER is? - ✔✔Light amplification by stimulated emission of
radiation
Laser light is.... - ✔✔Non-ionizing and not-mutating of cells.
The approximate range of visible light is between what two wavelengths? - ✔✔400-
700nm
Laser Light is - ✔✔Coherent, collimated, monochromatic
The electromagnetic spectrum includes visible and invisible wavelengths - ✔✔True
The definition of light is... - ✔✔Electromagnetic radiation that can be perceived by the
human eye.
The theory of selective photothermolysis, the CLS is choosing the proper... -
✔✔Chromophore
What determines the wavelength of a laser? - ✔✔lasing medium
Xenon flash lamps generate what wavelength? - ✔✔400nm-1200nm
What are the 5 basic laser parameters (settings)? - ✔✔Wavelength, pulse duration, spot
size, fluence, hertz
Only visible wavelengths can cause retinal damage... - ✔✔False
Laser safety closely resembles _______ safety - ✔✔firearm
Lasers for hair, tattoo, vein and wrinkles are what class of laser? - ✔✔Class IV / 4
COPYRIGHT © 2025 BY GRACE AMELIA, ALL RIGHTS RESERVED 2
Questions and Answers 100% Pass
What is the type of laser used most for LHR treatments? - ✔✔Long Pulse
What is the only growth stage a hair follicle can be disabled with a laser? - ✔✔Anagen
When lowering the spot size during LHR treatments, the CLS should also... -
✔✔Increase energy
What lasers wavelength are generally used in LHR treatments? - ✔✔755nm, 810nm,
1064nm
What does the spot size (SS) setting account for in regard to a LHR treatment? -
✔✔Depth
What does the fluence (J/cm2) setting account for in regard to LTR treatment? -
✔✔energy
What is the chromophore in LHR for light skin clients? - ✔✔Melanin
What does the fluence (J/cm2) setting account for in regard to LHR treatment? -
✔✔Energy
Lighter color and finer hair produces more effective LHR treatments - ✔✔False
COPYRIGHT © 2025 BY GRACE AMELIA, ALL RIGHTS RESERVED 1
, If a patient tweezes their chin every day, will a LHR treatment provide any results? -
✔✔Yes
Making the pulse duration longer will make LHR treatments _______ - ✔✔More
comfortable
The acronym for LASER is? - ✔✔Light amplification by stimulated emission of
radiation
Laser light is.... - ✔✔Non-ionizing and not-mutating of cells.
The approximate range of visible light is between what two wavelengths? - ✔✔400-
700nm
Laser Light is - ✔✔Coherent, collimated, monochromatic
The electromagnetic spectrum includes visible and invisible wavelengths - ✔✔True
The definition of light is... - ✔✔Electromagnetic radiation that can be perceived by the
human eye.
The theory of selective photothermolysis, the CLS is choosing the proper... -
✔✔Chromophore
What determines the wavelength of a laser? - ✔✔lasing medium
Xenon flash lamps generate what wavelength? - ✔✔400nm-1200nm
What are the 5 basic laser parameters (settings)? - ✔✔Wavelength, pulse duration, spot
size, fluence, hertz
Only visible wavelengths can cause retinal damage... - ✔✔False
Laser safety closely resembles _______ safety - ✔✔firearm
Lasers for hair, tattoo, vein and wrinkles are what class of laser? - ✔✔Class IV / 4
COPYRIGHT © 2025 BY GRACE AMELIA, ALL RIGHTS RESERVED 2
