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RO A whorl is the point hair spirals out from. It forms before birth, when follicles set their angle in the developing skin, and it fixes the direction of every hair around it for life. Most people have one, at or near the crown; some have two, and a whorl can also sit off-centre or at the frontal hairline, where it is usually called a cowlick.
| Variant | What it means in practice |
|---|---|
| Single whorl | One centre; direction radiates predictably |
| Double whorl | Two centres and a seam between them |
| Frontal cowlick | Hair at the hairline that will not lie flat |
It is a direction feature, not a density feature. Hair at a whorl is no thinner than elsewhere. It looks sparse because the shafts point away from each other and expose the scalp between them, which is also why the crown is the first place most people notice loss — the parting is built in.
Reproducing one is the hardest part of crown work. Every recipient site in that field points somewhere slightly different, and a graft aimed wrongly crosses its neighbours instead of lying with them. A double whorl doubles that problem, since two radiating fields must meet along a seam that looks deliberate.
The direction cannot be changed by styling or by surgery — it can only be followed.
Related terms
For how a hairline is planned around such features, see hairline design. For how crown loss is staged, see the Norwood scale.
