hair cycle


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Related to hair cycle: hair follicle, Telogen effluvium

hair cycle

[′her ‚sī·kəl]
(physiology)
The formation and growth of a new hair, followed by a resting stage, and ending with growth of another new hair from the same follicle.
References in periodicals archive ?
At the end of each hair cycle, some melanocytes become damaged and die.
Major shifts in genomic activity accompany progression through different stages of the hair cycle.
According to results presented at last year's annual meeting of the American Academy of Dermatology, a small-molecule hedgehog agonist, when topically applied to the skin, triggers the transition of hair follicles from the resting to growth phase of the hair cycle.
This is the hair cycle and it has 3 stages: Anagen, is the active growth period and its length varies from one person to another, lasting about 1,000 days or more; Catagen is the resting or intermediate period, lasting about 10 days; Telogen is the shedding period, lasting about 100 days.
The active part extends the growth phase of the hair cycle and reduces hair loss, while the second has vitamins to protect and nourish the hair.
Human hair cycle, Journal of Investigative Dermatology (1959) 33:307-316.
Over the past 50 years, scientists have pieced together the basic steps in the hair cycle anywhere on the body.
Ki-67 is a protein expressed in the anagen phase of the hair cycle.
It lengthens the growth phase of the hair cycle and stimulates follicles that have become dormant due to hereditary thinning.