Structure of Hair
the study of hair
what is trichology
define keratinization
keratinization
define hair density
what is the number of individual hair strands on 1 square inch
define lanugo hair
what is short, fine hair that covers a fetus and generally sheds within a few weeks of birth
a tube like structure in the skin or on the scalp that surrounds the hair root and anchors the hair in the skin.
what is hair follicle
the H in the COHNS
what is hydrogen
average hair density is how many per square inch
what is 2200 hairs per square inch
the growth phase
what is anagen phase
they are attached to the hair follicle
the strength of salt
what is weak
dry and brittle hair
what is over porous hair
the average healthy hair growth rate
what is 0.5 in per month
the hairs pith
what is medulla
red to yellow pigment in hair
what is pheomelanin
when hair leaves follicles at an angle
what is whorl
the resting phase
what is the telogen phase
what is hair follicle, hair bulb, and dermal papilla
cross section of wavy or curly hair
what is oval to round cross section
when to avoid products that are too harsh, when they trigger oil production
what is oily scalp
how long is the cycle for hair growth
what is 2-6 years