Structure of Hair
What is the scientific study of hair called?
Trichology
How many hair growth stages are there and what are the names for these stages?
Three.
Anagen, Catagen, Telogen
A disorder is an abnormality of a function, such as a birth defect or genetically inherited malfunction.
Define depilation vs epilation
Depilation - process of removing hair at or near the surface of the skin. (ex: shaving, chemical depilation (Nair)
Epilation - process of removing hair from the bottom of the follicle and removing from the skin, pulling the hair from the follicle. (ex: tweezing, waxing, sugaring, and threading)
What are the two types of wax and what areas are the best used in?
Hard - smaller more delicate areas where greater precision is needed - such as underarms, face, and bikini - no strip for removal
Soft - covers larger areas more quickly (such as legs, arms, and back) and is used with strips for removal
What is this unit called that houses the hair follicle and its appendages (which include the hair root, hair bulb, hair papilla, hair shaft, and the arrector pills muscle and sebaceous glands)
** DOUBLE POINTS IF YOU CAN SAY HOW MANY OF THESE UNITS WE ARE BORN WITH **
Pilosebaceous Unit
** Bonus answer: approx. 5 million **
In this stage the hair may sit in the follicle until a new anagen hair pushes it out or it falls (sheds) out on its own.
Telogen Phase
Best define Disease
A disease is pathological, conditions cause by a bacteria or virus, with a series of signs or symptoms.
Pros and Cons of shaving
Pros: inexpensive, Quick, Painless
Cons: Regrowth in 1-4 days, May cause infections, May cut skin
Where should you test the temperature of your wax?
On your wrist
What is the purpose of the hair bulb?
Where the hair grows from cell division (mitosis),
it produces the the hair and both the internal and external root sheaths.
This stage is referred to the transitional phase of hair growth, cell division (mitosis) stops and the hair starts detaching itself from the papilla, due to this the hair is this phase is sometimes referred to a "club hair."
This is the shortest stage of hair growth
Catagen Phase
Best define a Syndrome
Pros and Cons of a Chemical Depilatory
Pros: Relatively inexpensive, Easy to apply, Slower Regrowth
Cons: Not long lasting results compared to waxing, Strong odor, Can cause irritation and reactions
How should your wax be applied and removed?
At a 45 degree angle in the direction of hair growth and remove opposite
What is the purpose of the hair papilla?
It is necessary for hair growth and connects to blood vessels to bring nourishment to the hair bulb and help it continue growing and forming new hair.
This stage of hair growth is the target phase to wax, this is due to the hair bulb being most active during this stage and removing the hair during this will result in more long term hair reduction.
Anagen Phase
This disorder is defined as excessive growth of terminal hair in areas of the body that normally grow only vellus hair (lower back, eyelids, cheeks, abdomen, ears) and is not necessarily in the normal male hair growth pattern.
It is genetically or ethnically inherited, but can also occur later in life due to different medical treatments or reactions to certain medications.
This can occur in both men and women and is sometimes referred to as "werewolf syndrome"
Hypertrichosis
What are some permanent and semi permanent hair reduction methods of hair removal?
What makes them technically permanent or technically semi permanent hair reduction?
Permanent - Electrolysis - only proven method of hair permanent hair removal approved by the FDA and AMA.
It is defined as permanent because it works all all types of skin and all pigmentations of hair.
Semi Permanent Reduction - Laser hair removal and IPL hair removal
They are classified as semi permanent hair reduction because they do not work on all skin types and all hair pigments. For these methods to work the ideal candidate must have lighter pigmented skin but dark pigmented hair, as they are designed to target pigment.
What is the best growth stage for waxing?
Anagen
What are the three types of hair and what they mean?
Lanugo - soft downy hair found on a fetus, sheds after birth
Vellus - Found on areas not covered in Terminal hair (peach fuzz) in adults and in pre puberty
Terminal - course hair that is found on head, lashes, legs, arms, underarms, and brows. With hormone changes follicles producing Vellus hairs re-regulate to produce Terminal hairs
Which part of the body has the longest anagen phases? Which is the shortest?
Longest : Scalp
Shortest : Eyelashes
This condition is usually a sign of an underlying internal disorder of the body (such as PCOS), it causes excessive hair growth on the face, chest, underarms, and groin.- especially in women.
It is caused by excessive male androgens in the blood secreted from the ovaries or adrenal glands.
This hormonal imbalance may dissipate over time or with medical attention.
Hirsutism
What Fitzpatrick types are the ideal candidates for Electrolysis?
What Fitzpatrick types are ideal candidates for Laser and IPL?
Electrolysis - Fitz I-VI Because it works on all skin types and all hair pigmentations
Laser and IPL - Types I-III, not favorable for IV-VI because of the darker pigmentation of the skin. These methods are designed to target pigment so the risk for burning and PIH (post inflammatory hyperpigmentation) are increased for these Fitzpatrick types.
For these methods to have the best results the ideal candidate must have lighter pigmented skin but dark pigmented hair
What are some contraindication of waxing you should look out for on your intake form?
Recent treatments of chemical exfoliants, recent use of injectables (such as Botox), Use of medications that exfoliate or thin the skin (such as Retin-A, Differin, Tazorac, Renova, or other topical peeling agents) The use of steroids or antibiotics, thin or fragile skin, lack of skin sensation. Use of Accutane.