B
The middle layer of the hair shaft that provides strength, elasticity, and color
Cortex
The innermost layer of the hair shaft, present and course with thick hair
Medulla
The outermost layer of the hair that protects the cortex and gives hair it shine
Cuticle
The portion of hair that projects above the skin’s surface
Hair shaft
The tube like depression in the skin that contains the hair root
Hair follicle
A strong fibrosis protein that makes up the hair shaft
Keratin
The hair’s ability to stretch and return to its original length without breaking
Elasticity
The hair ability to absorb moisture can be low, normal or high
Porosity
The thickness or diameter of each hair strand, fine medium course
Texture
The part of the hair located below the surface of the scalp
Hair Root
The three phases of hair growth, Agagen (growth), catagen (transition) telogen (resting)
Growth cycle
Oil producing gland that helps lubricate the hair and scalp
Sebaceous gland
A small, cone shaped elevation at the base of the hair follicle that supplies, blood, and nutrients to the hair
Dermal Papilla
The small muscle attached to the hair follicle that causes hair to stand up (goosebumps)
Arrector Pili Muscle
The number of individual hair strands per square inch of scalp
Density
Hair loss caused by genetics and hormones often seen as male or female pattern baldness
Androgenic alopecia
An autoimmune disorder that causes brown patches of hair loss on the scalp or body
Alopecia Areata
The abnormal loss of hair, often caused by genetics, illness, or stress
Alopecia
Technical term for gray hair due to the loss of melanin
Canities
Abnormal hair growth, and areas of the body wear hair is usually minimal or absent
Hypertrichosis
The technical term for dandruff characterized by flaking of the Scalp
Pityrasis
The medical term for ringworm a contagious, fungal infection with circular lesion
Tinea
Also known as split ends; occurs when the hair is split due to damage
Trichoptilosis
A contagious, skin disease caused by the itch might marked by intense itching
Scabies
Dry dandruff with white, lightweight flakes, and itchy scalp
Pityriasis Capitis Simplex