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100
The scientific study of hair and its diseases and care
What is trichology?
100
the two main types of hair found on the body.
What are vellus and terminal?
100
the recent measurements average rate of hair loss
What is 35 to 40 hairs per day recent measurements for?
100
the technical term for gray hair
What is canities?
100
has 80,000 average number of hairs
What is the average number of hairs on red hair color?
200
The two parts that a mature strand of human hair is divided
What are the hair root and the hair shaft?
200
areas of the body that do not grow any hair
What palms of the hands and the soles of the feet have do with hair?
200
the abnormal hair loss
What is alopecia?
200
the technical term for dandruff
What is pityriasis?
200
the ability of the hair to absorb moisture.
What is hair porosity?
300
The tube-like depression or pocket in the skin or scalp that contains the hair root.
What is hair follicle?
300
this phase lasts one to two weeks
How long does the telogen phase last for?
300
the treatments that have been proven to stimulate hair growth
What are minoxidil and finasteride?
300
A variety of canities, characterized by alternating bands of gray and pigmented hair throughout the length of the hair strand.
What is ringed hair?
300
the ability of the hair to stretch and return to its original length without breaking
What is hair elasticity?
400
the three main layers of the hair shaft
What are the hair cuticle, cortex and medulla?
400
1/2 inch per month.
How much does the average growth of healthy hair?
400
hair loss that is characterized by miniaturization of terminal hair that is converted into vellus hair.
What is androgenic alopecia?
400
the technical term for split ends
What is trichoptilosis?
400
the thickness or diameter of the individual hair strand
What is hair texture?
500
Also a weak, physical, cross-link side bond between adjacent polypeptide chains
What is salt bonds?
500
generally lasts from three to five years, but in some cases, it can last as long as 10 years.
How long does the anagen phase last?
500
complete body hair loss
What is alopecia universalis?
500
the technical term for brittle hair.
What is fragilitas crinium?
500
the different the types of hair growth patterns.
What are hair stream, whorl, cowlick?