HairFactz Definitions
Some words have more than one meaning. Only those meanings relating to this site will be used.
All Definitions
Tactile Hairs (Vibrissae)
Whiskers only found on animals.
Telogen
Telogen is the last phase of the hair growth cycle when a hair is resting and is ready to be naturally shed. The hair root becomes a bulbous (shaped like a bulb) shaped root. It is the resting phase for hairs on the scalp, usually lasting 3 weeks to 3 months, and the resting phase is much longer for hairs on the eyebrow, eyelash, arm and leg. Approximately 10 to 18 percent of our hair is in the telogen phase at any given time. It is normal to lose some telogen hairs each day. After the telogen phase, the hair growth process starts over again to the anagen phase.
Terminal Hair
Developed hair, which is long, coarse, generally pigmented hair (darker in color), and can be found on the scalp, armpits, pubic area and in males the beard area, chest, legs, and back.
Texture
The appearance and feel of hair due to its length, thickness, and shaft form.
Tip
The most distal end of a hair shaft. Distal end is the end of the hair away from the root, towards the tip. The shaft is the portion of a hair between the root and the tip.
Threading
Threading hair removal is an ancient technique in which a loop of thread is rotated across the skin to pluck the hair. May cause skin irritation and infection.
Trichologist
A doctor who specializes in the study of the structure, functions, and diseases of the hair.
Trichology
The study of the structure, functions, and diseases of the hair.
Trichonodosis
Trichonodosis is a condition characterized by apparent or actual knotting of the hair.
Trichoptilosis
Trichoptilosis is a disease condition characterized by longitudinal splitting or fraying of the hair shaft.
Trichorrhexis Invaginati
Trichorrhexis invaginati is a genetic disease characterized by a segment of bulbous, dilated hair enfolded into a concave hair terminal, recalling the appearance of a bamboo node. If the hair breaks at the bulbous end, the hair has a "golf tee cup" end.
Trichorrhexis Nodosa
Trichorrhexis nodosa is a condition characterized by the formation of nodes, and in extreme cases, the hair is weaker at the node and is subject to breakage.
Trichoschisis
Trichoschisis is a condition characterized by brittle hair with a transverse crack or a clean break.