LASER HAIR REMOVAL EXAM 2025
QUESTIONS AND ANSWERS
Layers of the skin - ANS epidermis, dermis, hypodermis
2 classifications of hair - ANS vellus and terminal
5 characteristics of vellus hair - ANS 1. peach fuzz; soft, found on the cheeks, neck, inside
area of the arms, and other areas of the body
2. lacks pigmentation on fair skin, has pigmentation on darker skin types
3. lacks a developed root and bulb
4. grows from a very shallow
5. does not have a true follicle
5 characteristics of a terminal hair - ANS 1. deeply situated, coarse hairs found on the scalp,
underarms, pubic areas, legs and beard
2. developed root, bulb and has pigmentation
3. grows from a follicle
4. comprised of 3 layers : cuticle, cortex and medulla
5. enlarged base at the root called a "bulb"
what happens in the hair follicle bulb? - ANS actively dividing cells called the hair matrix,
which produces hair + the inner root sheath
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, where is the hair follicle formed? - ANS the epidermis, before our birth
where does a terminal hair extend down to (what layer of the skin)? - ANS the hypodermis
inner root sheath? - ANS grows upward from the dermal papilla
Outer root sheath (ORS) - ANS support of the follicle
hair root? - ANS lies in the follicle, under the skin
hair shaft? - ANS visible part of the hair, above the skin
what are the normal systemic causes of hair growth? - ANS - puberty
- pregnancy
- menopause
factors that activate hair growth - ANS - increased blood supply to the area
- hormone stimulation
what is a chromophore? - ANS a molecule which absorbs light at a particular wavelength and
emits color as a result
chromophore for LHR - ANS melanin
medical laser wavelengths - ANS 1. ruby: 694nm
2. alexandrite: 755nm
3. diode: 800-810nm
COPYRIGHT © 2025 THESTAR ALL RIGHTS RESERVED 2
QUESTIONS AND ANSWERS
Layers of the skin - ANS epidermis, dermis, hypodermis
2 classifications of hair - ANS vellus and terminal
5 characteristics of vellus hair - ANS 1. peach fuzz; soft, found on the cheeks, neck, inside
area of the arms, and other areas of the body
2. lacks pigmentation on fair skin, has pigmentation on darker skin types
3. lacks a developed root and bulb
4. grows from a very shallow
5. does not have a true follicle
5 characteristics of a terminal hair - ANS 1. deeply situated, coarse hairs found on the scalp,
underarms, pubic areas, legs and beard
2. developed root, bulb and has pigmentation
3. grows from a follicle
4. comprised of 3 layers : cuticle, cortex and medulla
5. enlarged base at the root called a "bulb"
what happens in the hair follicle bulb? - ANS actively dividing cells called the hair matrix,
which produces hair + the inner root sheath
COPYRIGHT © 2025 THESTAR ALL RIGHTS RESERVED 1
, where is the hair follicle formed? - ANS the epidermis, before our birth
where does a terminal hair extend down to (what layer of the skin)? - ANS the hypodermis
inner root sheath? - ANS grows upward from the dermal papilla
Outer root sheath (ORS) - ANS support of the follicle
hair root? - ANS lies in the follicle, under the skin
hair shaft? - ANS visible part of the hair, above the skin
what are the normal systemic causes of hair growth? - ANS - puberty
- pregnancy
- menopause
factors that activate hair growth - ANS - increased blood supply to the area
- hormone stimulation
what is a chromophore? - ANS a molecule which absorbs light at a particular wavelength and
emits color as a result
chromophore for LHR - ANS melanin
medical laser wavelengths - ANS 1. ruby: 694nm
2. alexandrite: 755nm
3. diode: 800-810nm
COPYRIGHT © 2025 THESTAR ALL RIGHTS RESERVED 2
