LASER HAIR REMOVAL 2026
COSMETOLOGY TECHNIQUE STUDY TEST
SOLUTION HANDBOOK OVERVIEW
◉ UVA rays
Answer: Penetrate the skin more deeply and are dominate tanning
rays. Cause photo aging and skin cancer
◉ UVB rays
Answer: Cause skin burns and effect the epidermis. Also cause
cancer and photo aging
◉ UVC RAYS
Answer: Rays are absorbed by the ozone layer and don't reach the
earth
◉ Gamma rays
Answer: Have the shortest most powerful wavelength and the most
energetic form of light
◉ Gamma rays can kill living cells
Answer: Used in medicine to kill cancerous cells
,◉ Laser light
Answer: Is coherent
Monochromatic
Collimated
◉ IPL Light
Answer: Is polychromatic
Scattered and
Non collimated
◉ Construction of a laser
Answer: 1. Flash lamp, pump source
2. Crystal, laser medium
3. Optical resonators , highly reflective mirror and a partially
reflective mirror
◉ YAG
Answer: Yttrium aluminum garnet
◉ Coherent energy
, Answer: Laser photons travel through space both temporally and
spatially.
Travel in Time and space in perfect unison in one direction. In phase
or in step
◉ Monochromatic
Answer: Laser light is composed of one wave length and one color
weather visible or invisible
◉ Collimated
Answer: Photon are parallel to each other in a diameter of the beam
to produce a focused spot by using a lens
◉ Fluence
Answer: The energy of the pulsed laser beam it is expressed in
joules per cm2
◉ Joule
Answer: The unit of energy or work
◉ NS. Nanosecond
Answer: Pulse duration or width is measured in
COSMETOLOGY TECHNIQUE STUDY TEST
SOLUTION HANDBOOK OVERVIEW
◉ UVA rays
Answer: Penetrate the skin more deeply and are dominate tanning
rays. Cause photo aging and skin cancer
◉ UVB rays
Answer: Cause skin burns and effect the epidermis. Also cause
cancer and photo aging
◉ UVC RAYS
Answer: Rays are absorbed by the ozone layer and don't reach the
earth
◉ Gamma rays
Answer: Have the shortest most powerful wavelength and the most
energetic form of light
◉ Gamma rays can kill living cells
Answer: Used in medicine to kill cancerous cells
,◉ Laser light
Answer: Is coherent
Monochromatic
Collimated
◉ IPL Light
Answer: Is polychromatic
Scattered and
Non collimated
◉ Construction of a laser
Answer: 1. Flash lamp, pump source
2. Crystal, laser medium
3. Optical resonators , highly reflective mirror and a partially
reflective mirror
◉ YAG
Answer: Yttrium aluminum garnet
◉ Coherent energy
, Answer: Laser photons travel through space both temporally and
spatially.
Travel in Time and space in perfect unison in one direction. In phase
or in step
◉ Monochromatic
Answer: Laser light is composed of one wave length and one color
weather visible or invisible
◉ Collimated
Answer: Photon are parallel to each other in a diameter of the beam
to produce a focused spot by using a lens
◉ Fluence
Answer: The energy of the pulsed laser beam it is expressed in
joules per cm2
◉ Joule
Answer: The unit of energy or work
◉ NS. Nanosecond
Answer: Pulse duration or width is measured in
