Hair structure
What is the study of Trichology.
The study of Hair and its diseases.
Sebaceous gland
secretes the waxy substance, sebum, to lubricate the skin and hair, making it supple, waterproof, and protected against external factors.
What are the phases of hair growth
Anagen, Catagen, Telogen. ( A.C.T)
Hypertrichosis
Excessive growth of terminal hair in areas of the body that normally grow only vellus hair, and not necessarily in the adult male hair growth patterns. Can be inherited, other causes and can be treated by estheticians.
What are the two types of hair removal
Depilation and epilation
What is a Hair Follicle
a mass of epidermal cells forming a small tube or canal that extends deep into the dermis
Arrector pili muscle
contracts when affected by cold or other stimuli, causing the follicle to stand erect (goosebumps) and thought to keep skin warmer by creating an air pocket under the upright hairs.
Anagen Phase
New hair is produced
Hirsutism
_______ processes of removing hair at or near the level of the skin (shaving, chemical depilation)
______ Process of removing hair from the bottom of the follicle by breaking contact between the bulb and the papilla. ( tweezing, waxing, sugaring, and threading)
Depilation
Epilation
_______ contains the hair follicle and its appendages, which include the hair root, hair bulb, hair papillae, and the arrector pili muscle, and sebaceous glands.
Pilosebaceous unit
Lanugo
soft, downy hair, found on a fetus which sheds after birth and is replaced with either velelus or terminal hair.
Catagen
transition stage - shortest stage
Diseases affecting hair growth:
Acromegaly and Cushing syndrome
_________ product is held in the hand and applied against hair growth and removed in direction of hair growth. Performed at body temperature
__________ product is applied with a spatula in the direction of hair growth and removed against the hair growth with muslin or pellon strips. It is warmed according to manufacturers’ instructions, as it may be affected by additives like resins.
Hand applied sugaring.
Spatula-applied Sugaring
What is a hair bulb
Thick, Club-shaped structure made from epithelial cells that surrounded the papilla.
Vellus hair
found in areas not covered by the larger, coarse termainal hairs. ( peach fuzz on womens checks )
Telogen
Final or resting stage
Disorder, an abnormality of function, like a birth defect or genetically inherited malfunction. Give an example
Adrenogenital syndrome
Available in blocks, disks, pellets, or beads.
Generally, the harder the wax, the more heat is required to melt it.
Gentle enough for facial area, yet strong enough to be used on coarse hair and areas where growth converges from multiple directions
Can be applied to an area for a second time during the service
Hard wax
What is the hair shaft and its main three layers
Part of the hair locate above the surface of the skin,
cuticle, cortex, medulla
Terminal hair
longer, course hair found on the head, brows, lashes, genitals, arm, and legs.
Cycles can also be determined by
age, genetics, hormones and health, and prescription drugs.
Syndrome: a group of symptoms that, when combined, characterize a disease or disorder.
Syndromes affecting hair growth:
PCOS and Achard-Thiers syndrome
•Consistency of honey when melted and when applied runs down and around every hair.
•Must be removed immediately with a muslin or pellon, while still warm.
•Do not go over waxed area a second time in the same service, as it could burn, lift, or otherwise damage the skin.
Soft wax