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Laser Hair Removal Exam Questions and Answers | Latest Update 2025
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Laser Hair Removal Exam Questions and Answers | Latest Update 2025
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Laser Hair Removal Exam Questions andAnswers | Latest Update 2025
What are the layers of the skin? - ANSWER epidermis, dermis, hypodermis
What are the 2 classifications of hair? - ANSWER Vellus and terminal hair
Pulse duration and fluence for fitz 1,2,3 - ANSWER -Use higher fluences
-Shorter pulse duration
Pulse duration and fluence for fitz 4,5 - ANSWER -Use a lower fluence
-Use a longer pulse duration
Normal systemic changes - ANSWER -Puberty
-Menopause
-Pregnancy
What are the factors that activate hair growth? - ANSWER -Increased blood
supply to the area (topical stimulation)- accelerates
-Hormone stimulation initiates and accelerates
What is a chromophore for laser hair removal? - ANSWER Melanin
Examples of medical laser wavelengths, the different platforms - ANSWER -
Ruby: 694 nm (red light, don't use anymore)
, -Alexandrite: 755 nm (green light, skin types 1,2,3)
-Diode: 800-810 nm (invisible light, skin types 1,2,3,4)
-Nd: YAG 1064 nm (neodymium: yttrium-aluminum-garnet) (invisible light, all skin
types, not the best but safest for skin types 4 and 5)
What are the phases of hair growth - ANSWER anagen, catagen, telogen
Anagen - ANSWER -Active hair growth is occurring
-in early anagen, the follicle is growing and starting to deepen
-Hair is beginning to grow but has not yet reached the surface of the skin
-The mid-late anagen follicle has reached its maximum depth. The hair is fully
visible terminal hair on the surface of the skin.
-The hair shaft bulb is dark or black pigmented and very moist
-Dermal papilla directs and supports hair growth, enclosed by hair matrix
Catagen - ANSWER -Brief transitional stage
-Last only a few days to a few weeks
-Hair folicle seperates from the papilla
-The hair shaft bulb is lighter or brown pigmented and lighter
-Hair folicle shorts 1/3 of its former length
-In late catagen, the thin cord of epidermal cells attaching the dermal papilla to
the shrunken hair reacts upwards, followed by underlyin g hair papilla, which also
movesz upwards.
Telogen - ANSWER -Resting or dormant period
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