Laser Level 4

Question 1

What is laser?

Answer 1

Laser is a device that generates an intense beam of coherent,monochromatic light

Question 2

What does coherent mean?

Answer 2

All one wavelength and one direction

Question 3

What does LASER stand for?

Answer 3

Light
Amplification by
Stimulated
Emission of
Radiation

Question 4

What is the primary principle of laser?

Answer 4

Photothermolysis

Question 5

What is considered the primary chromophore?

Answer 5

Melanin

Question 6

Lasing medium inside the laser (the energy source) could be?

Answer 6

Gas (argon, krypton,co2)
Solid (Ruby crystals, alexandrite crystals, NdYAG, Diode)
Liquid (dye)

Question 7

What does the lasing medium determine?

Answer 7

The wavelength of the laser

Question 8

Is alexandrite safe to use on skin types 4,5 and 6?

Answer 8

No it should be used on skin type 1,2 and 3

Question 9

How many NM does alexandrite reach?

Answer 9

755nm

Question 10

How many NM does diode reach?

Answer 10

810nm

Question 11

How many NM does Nd YAG reach?

Answer 11

1064nm

Question 12

Visible light lasers are strongly absorbed by?

Answer 12

Blood (haemoglobin) and melanin

Question 13

How to prepare for your laser treatment

Answer 13

Avoid sun exposure for 2-4 weeks
No active ingredients in skincare
No peels
Filler or Botox wait 2-4 weeks

Question 14

What wavelength should be minimum for hair removal?

Answer 14

650nm

Question 15

How does laser work?

Answer 15

Light from laser absorbed by pigment in the hair, converts to heat, travels down the hair to the root which is damages blood supply from dermal papilla

Question 16

What percentage of body hair is in anagen stage?

Answer 16

20%
Our growth cycle contains 20% anagen stage the rest could be telogen or catogen we have dormant follicles so will be affective on those in anagen

Question 17

What is the wave length measured in?

Answer 17

Nano metres

Question 18

What is the fluence measured in?

Answer 18

Jules cm2

Question 19

What is the pulse duration measured in?

Answer 19

Milliseconds

Question 20

Darker skin types should be treated with long pulse duration
True or false?

Answer 20

TRUE

Question 21

What is infrared light?

Answer 21

Electro magnet radiation wavelengths longer than visible light and starts around 900nm and extends beyond 10,000nm

Question 22

Why do darker skin tones require less fluence?

Answer 22

Because their skin will absorb more light

Question 23

The shorter the pulse duration the more destructive energy becomes?
True or false

Answer 23

TRUE

Question 24

What is a spot size?

Answer 24

Size of the laser beam from the applicator

Question 25

Large spot size means?

Answer 25

Deeper penetration and decreased scatter of light

Question 26

Small spot size means?

Answer 26

More energy absorbed in superficial structures and increased scatter

Question 27

What does repetition rate mean?

Answer 27

The number of pulses emitted per second measured in HZ

Question 28

Can you treat under the eyebrow bone with laser hair removal

Answer 28

NO

Question 29

What is the treatment interval for the body

Answer 29

6 weeks

Question 30

What is the treatment interval for the face

Answer 30

4 weeks

Question 31

After 6 sessions clients should see

Answer 31

60-85% hair reduction

Question 32

Will clients need maintenance treatments

Answer 32

Yes 1-2 yearly usually more on the face as this depends on hormones

Question 33

What are the 3 stages of hair growth?

Answer 33

Anagen- active Catogen- transition detached from blood supply but still in the follicle Telogen- resting phase separated and waiting to fall out