Structure of hair:
Cuticle
Cortex (melanin)
Medulla
Papilla
Blood vessels
Explain why grey hair does not absorb laser technology - ANSWER-Grey hair lack
pigment, or they do not have enough pigment granules, so they cannot absorb enough
energy from the laser, even with high fluence. The hair and their follicles are not
destroyed.
, An alternate method of permanent hair removal must be advised, such as electrolysis or
ultrasound hair removal.
How is the skin nourished? - ANSWER-through blood and lymph
List 3 types of pigmentation in skin - ANSWER-Melanin (brown, red, yellow, and black
pigment)
Haemoglobin (red or bluish undertones to the skin)
Carotene (gives yellow undertone)
What are hormones? What is its function in the body? - ANSWER-They are chemical
substance that pass from their glands directly into the blood stream.
Act somewhat like catalysts, which can speed up or slow down the metabolic processes
of the body. They travel throughout the body usually targeting certain organs like a "key"
fitting into a certain "lock", so the role of specific hormones is to go to specific organs to
carry out specialized functions.
Explain why shaving before treatment is recommended while having laser hair removal -
ANSWER-Before treatment, completely shave all hairs away. Anything left will cause
skin irritation or surface burns.
Hair grows in different stages, and the best way to eliminate it is to get it treated when
its actively growing. Shave until the hair has finally stopped growing back.
What pulse duration and fluence should be used for skin type I, II, III (Lighter skin)? -
ANSWER-Use higher fluences.
Use a shorter pulse duration.
Use a smaller spot size (optional)
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