Animal hair is used for a fingerprint brush?

That's a great question! You're thinking along the right lines, but the answer is no, animal hair isn't used for fingerprint brushes.

Here's why:

* Fingerprint brushes need specific properties: They need to be very fine and delicate to lift fingerprints without damaging them. They also need to be statically charged to attract the fingerprint dust.

* Animal hair lacks the right qualities: While some animal hairs might be fine, they lack the consistent structure and static charge required for fingerprint dusting. They are also more likely to shed, contaminating the evidence.

Instead of animal hair, fingerprint brushes are typically made from:

* Synthetic fibers: These are specially designed fibers, often nylon or polyester, that are very fine and can be easily electrostatically charged.

* Horsehair: While not as common as synthetic fibers, some fingerprint brushes still use horsehair, as it has natural electrostatic properties.

So, while animal hair might seem like a good option at first, it lacks the specific qualities needed for a fingerprint brush.