How long do dish brush and bottle brush heads last?Updated 35 minutes ago
TL;DR: Brush heads wear differently depending on use, but as a general guide, conventional dish brushes are often replaced every 6 to 8 weeks. Because Dish Brush and Bottle Brush heads are dishwasher-safe, you can often extend that to up to 6 months with regular cleaning.
Last reviewed: April 2026
How long do brush heads last?
✓ Longevity
Conventional brushes are typically replaced every 6 to 8 weeks. Koh brush heads are dishwasher-safe and can last up to 6 months when cleaned regularly in the dishwasher, depending on frequency and intensity of use.
✓ When to replace
Bristles naturally wear over time. Replace the head when you notice:
Lost shape: the bristle pattern no longer holds its original form.
Visible deformation: splaying, flattening, or bent bristles.
Reduced performance: cleaning results have noticeably dropped off.
How do I extend the life of my brush head?
✓ Keep them fresh
Rinse after each use under running water to remove food debris.
Dishwasher refresh: put the head (and handle) in the dishwasher periodically to deep clean.
Dry fully between uses where possible to prevent odour build-up.
Which replacement heads are available?
Both heads fit every Koh dish brush handle. Pick the one you need for the job. Both are currently out of stock while we restock.
New at Koh?
Start with Dish Brush. Recycled plastic handle, soft TPE grip. Pair with Dishwashing Liquid for the full routine.
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