Laser Hair Removal Exam
Study online at https://quizlet.com/_gdes09
1. What are the lay- epidermis, dermis, hypodermis
ers of the skin?
2. What are the 2 Vellus and terminal hair
classifications of
hair?
3. Pulse duration -Use higher fluences
and fluence for -Shorter pulse duration
fitz 1,2,3
4. Pulse duration -Use a lower fluence
and fluence for -Use a longer pulse duration
fitz 4,5
5. Normal systemic -Puberty
changes -Menopause
-Pregnancy
6. What are the fac- -Increased blood supply to the area (topical stimulation)- accelerates
tors that activate -Hormone stimulation initiates and accelerates
hair growth?
7. What is a Melanin
chromophore for
laser hair re-
moval?
8. Examples of -Ruby: 694 nm (red light, don't use anymore)
medical laser -Alexandrite: 755 nm (green light, skin types 1,2,3)
wavelengths, the -Diode: 800-810 nm (invisible light, skin types 1,2,3,4)
different plat- -Nd: YAG 1064 nm (neodymium: yttrium-aluminum-garnet) (invisible light, all skin
forms types, not the best but safest for skin types 4 and 5)
, Laser Hair Removal Exam
Study online at https://quizlet.com/_gdes09
9. What are the anagen, catagen, telogen
phases of hair
growth
10. Anagen -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
11. Catagen -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.
12. Telogen -Resting or dormant period
-The papilla has detached from the follicle
- a "club" hair is terminal hair that has separated from the papilla that has risen to
the top of the follicle. eventually, it falls out
-The hair bulb has shrunken, is white, and consists of keratinized hair matrix cells
-Sometimes the follicle doesn't go through this phase.
13. Why gray hair Grey hair lacks pigment, or they do not have enough pigment granule, so therefore
does not absorb they cannot absorb enough energy from the laser, even with a higher fluence,
laser energy? the hair and the follicle is not destroyed. An alternate method for permanent hair
removal must be advised such as electrolysis or ultrasound hair removal.
Study online at https://quizlet.com/_gdes09
1. What are the lay- epidermis, dermis, hypodermis
ers of the skin?
2. What are the 2 Vellus and terminal hair
classifications of
hair?
3. Pulse duration -Use higher fluences
and fluence for -Shorter pulse duration
fitz 1,2,3
4. Pulse duration -Use a lower fluence
and fluence for -Use a longer pulse duration
fitz 4,5
5. Normal systemic -Puberty
changes -Menopause
-Pregnancy
6. What are the fac- -Increased blood supply to the area (topical stimulation)- accelerates
tors that activate -Hormone stimulation initiates and accelerates
hair growth?
7. What is a Melanin
chromophore for
laser hair re-
moval?
8. Examples of -Ruby: 694 nm (red light, don't use anymore)
medical laser -Alexandrite: 755 nm (green light, skin types 1,2,3)
wavelengths, the -Diode: 800-810 nm (invisible light, skin types 1,2,3,4)
different plat- -Nd: YAG 1064 nm (neodymium: yttrium-aluminum-garnet) (invisible light, all skin
forms types, not the best but safest for skin types 4 and 5)
, Laser Hair Removal Exam
Study online at https://quizlet.com/_gdes09
9. What are the anagen, catagen, telogen
phases of hair
growth
10. Anagen -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
11. Catagen -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.
12. Telogen -Resting or dormant period
-The papilla has detached from the follicle
- a "club" hair is terminal hair that has separated from the papilla that has risen to
the top of the follicle. eventually, it falls out
-The hair bulb has shrunken, is white, and consists of keratinized hair matrix cells
-Sometimes the follicle doesn't go through this phase.
13. Why gray hair Grey hair lacks pigment, or they do not have enough pigment granule, so therefore
does not absorb they cannot absorb enough energy from the laser, even with a higher fluence,
laser energy? the hair and the follicle is not destroyed. An alternate method for permanent hair
removal must be advised such as electrolysis or ultrasound hair removal.
