Crown (vertex)
The whorl at the top and back of the head.
The spiral at the back of the scalp where hair changes direction. It is one of the two areas pattern loss attacks, and the harder of the two to cover convincingly, because the whorl means hair radiates outwards and the eye reads density differently there.
Related terms
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Anagen phase
The growing phase of the hair cycle.
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DHT (dihydrotestosterone)
The hormone that drives pattern hair loss.
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Donor area
The band of hair at the back and sides that supplies the grafts.
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Follicular unit
The natural grouping of one to four hairs that grow together.
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Graft
One follicular unit, moved from the donor area to the recipient area.
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Hairline design
Where the new hairline is drawn, and at what angle.
