Whorl

The whorl is the spiral at the crown where scalp hair radiates outward from a central point. Its geometry is why the crown is the hardest area to transplant convincingly.

Where you'll meet it

In any discussion of crown transplants, and in the reason surgeons give for discouraging them. Some people have two whorls, or a whorl off to one side, and you may hear a surgeon point that out at a consultation because it changes the design.

What is the whorl?

The point at the crown, also called the vertex, where hair grows outward in a spiral from a centre. Look down at a head of short hair and you can usually see it: the hair at the top fans out in every direction rather than lying one way. Most people's spiral turns clockwise; some turn the other way, and a minority have two.

Why is the crown so hard to transplant?

Because hair there has no single direction to lie in. Everywhere else on the scalp, hair lies broadly one way, so each hair covers the skin next to it and a moderate density looks convincing. A front transplanted at a fraction of original density can still read as full. At the whorl, hair radiates from the centre, so it parts naturally and the scalp shows through unless density is high.

Overhead light makes this worse. The crown is the part of the head lit from directly above in bathrooms, lifts and offices, and light passing through thin hair onto scalp is exactly what makes thinning visible.

How do surgeons recreate it?

By making recipient sites in a spiral, with the direction and angle changing progressively around the centre point, usually following the direction any remaining native hair still shows. Done well, the result looks like hair that grew there. Done badly, it looks like a patch of hair that was applied, pointing the wrong way and catching the light.

Many surgeons plant the crown at lower density than the front and concentrate grafts around the leading edge of the thinning area, which gives more apparent coverage per graft than spreading them evenly. DHI is sometimes used here because much of the crown still has native hair to plant among.

What does it mean in practice?

A crown can absorb 2,000 to 3,500 grafts and still look thin under overhead light. That is the same budget as an entire hairline and frontal third, which would return far more visible change. Crown loss also tends to keep expanding, so a crown treated at thirty may need chasing at forty from a smaller donor area.

That is the main reason surgeons say front before crown. It is also why scalp micropigmentation and medication, which works better at the crown than anywhere else on the scalp, are often the better answer there. The crown goes through when crown surgery is the right call.

← Back to the Glossary