07/07/2026
Music Fact Friday follow-up question. 🎻
A typical horse's tail contains roughly 80,000–120,000 hairs, though it varies by breed, age, and individual horse.
For violin bows, luthiers and bow makers do not usually use an entire tail.
How bow hair is sourced
A standard violin bow uses about 150–200 hairs.
A cello bow uses more, often around 200–250 hairs.
When suppliers harvest tail hair, they typically:
Cut a portion of the tail (not the whole tail)
Leave the horse with a normal-looking tail
Sort the hair by length, color, thickness, and quality
The best bow hair usually comes from:
Cold-climate horses (Mongolia, Siberia, parts of Canada)
Stallions rather than mares (to avoid urine damage to the hair)
White or light-colored tails (easier to inspect and prepare)
Does one bow come from one horse?
Usually not.
A bow rehair generally contains hair selected from a large batch.
The bundle on a single bow may contain hairs from:
One horse
Several horses
Even multiple regions depending on the supplier
The bow maker's goal is consistency of length, thickness, texture, and strength rather than keeping the hair from a single animal together.
Fun comparison
If a violin bow uses 180 hairs and a horse has 100,000 tail hairs:
One horse's tail contains enough hair for over 500 violin bows!
Have you ever watched a bow rehair being done?
