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How long do dish brush and bottle brush heads last?Updated 2 hours 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.


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Koh Dish Brush
Koh Bottle Brush

How long do brush heads last?

Conventional dish brushes are generally replaced every 6 to 8 weeks depending on how often and how hard they're used. Because the Koh Dish Brush and Bottle Brush heads are dishwasher-safe, the replacement interval can be extended to up to 6 months with regular cleaning. Replace the head when the bristle pattern loses its shape, the bristles splay, flatten, or bend, or cleaning performance noticeably drops.

✓ 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.

Up to 6 months Dishwasher-safe

✓ 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?

Rinse the brush head under running water after each use to remove food debris. Periodically put the head and handle through the dishwasher for a deeper clean, since both are dishwasher-safe. Let the head dry fully between uses where possible to prevent odour build-up. Regular rinsing and dishwasher refreshes are what extend the head from the conventional 6 to 8 weeks out to up to 6 months.

✓ Keep them fresh

1

Rinse after each use under running water to remove food debris.

2

Dishwasher refresh: put the head and handle in the dishwasher periodically to deep clean.

3

Dry fully between uses where possible to prevent odour build-up.

Which replacement heads are available?

There are two replacement heads, and both fit every Koh dish brush handle. The Dish Brush Head is a flat head for plates, pots, and pans. The Bottle Brush Head is a bristled head shaped for bottles, jars, and narrow-neck containers. Pick whichever suits the job.

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.

Koh Dish Brush Head

Dish Brush Head

Flat brush head for plates, pots, and pans.

Koh Bottle Brush Head

Bottle Brush Head

Bristled head shaped for bottles, jars, and narrow-neck containers.

Koh Dish Brush

Dish Brush

Recycled plastic handle, soft TPE grip, dishwasher-safe interchangeable head.

Koh Dishwashing Liquid

Pair it with

Add Dishwashing Liquid for the full sink routine. The brush head is compatible with it for everyday dishes.

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Last reviewed: May 2026 · Koh Australia

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