What Bow Hair Actually Does

Bow hair (traditionally horsehair, though synthetic options exist) grips the string through rosin application, creating the friction that makes the string vibrate — hair naturally loses grip over time from oil buildup, wear, and breaking individual hairs, and periodic rehairing is a routine, expected maintenance need, not a sign of misuse.

Recognizing When a Bow Needs Rehairing

Visibly thinning hair, hair that won’t hold rosin effectively (producing a weak or scratchy sound despite fresh rosin application), or noticeably darkened/dirty hair from oil buildup are the practical signals — a general guideline of roughly once or twice a year for a regularly playing student is reasonable, though actual need varies by playing frequency and intensity.

Basic Rehairing Process Overview

Rehairing involves removing old hair, cleaning the frog and tip mortises, installing and evenly distributing new hair at correct tension, and properly wedging/securing both ends — this is a genuinely hands-on craft skill requiring practice to achieve even hair tension and correct spacing, not something to rush through on a first attempt without supervision.

Bow Stick Condition and Basic Care Advice

Beyond hair, checking the bow stick itself for warping, camber (the bow’s curve) issues, or damage, and giving customers basic care guidance (loosening the hair when not in use, avoiding touching the hair with bare hands, which transfers oil) helps bows last longer and perform better between service visits.