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How long do Dish Brush heads last?Updated 12 hours ago

TL;DR: Conventional dish brush heads are usually replaced every 6 to 8 weeks. Because Koh Dish Brush and Bottle Brush Head heads are dishwasher-safe, regular cleaning can extend that to up to 6 months. Replace sooner if the bristles splay, flatten or lose their shape.


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Koh Dish Brush
Koh Bottle Brush Head

Conventional dish brushes are generally replaced every 6 to 8 weeks depending on how often and how hard they are 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 in the dishwasher. Bristles wear naturally, so replace the head earlier if it loses its shape.

✓ Up to 6 months with regular cleaning

Conventional dish brushes are typically replaced every 6 to 8 weeks. Koh brush heads are dishwasher-safe, so regular cleaning in the dishwasher can extend that to up to 6 months, depending on how often and how hard they are used.

6 to 8 weeks conventional Up to 6 months Dishwasher-safe

✓ Replace the head when you see

  • Lost shape: the bristle pattern no longer holds its original form.
  • Visible deformation: splayed, flattened or bent bristles.
  • Reduced performance: cleaning results have noticeably dropped off.

How do I make a brush head last longer?

Rinse the brush head under running water after each use to remove food debris. Put the head and handle through the dishwasher periodically for a deeper clean, since both are dishwasher-safe. Let the head dry fully between uses to prevent odour build-up. Avoid pressing too hard when scrubbing, and store the brush bristle-side up so the bristles keep their shape.

✓ Keep them in shape

  1. Rinse under running water after each use to clear food debris.
  2. Put the head and handle through the dishwasher periodically for a deeper clean.
  3. Let the head dry fully between uses to prevent odour build-up.
  4. Avoid pressing too hard when scrubbing, which flattens bristles.

✓ Store it upright

Stand the brush on its flat base, or store it bristle-side up, so the bristles are not resting under load while they dry.

Bristle-side up

Which replacement heads can I buy in the UK?

In the UK the Bottle Brush Head is sold on its own as a spare and twists onto the same handle as the Dish Brush. The Dish Brush itself is sold complete with its brush head attached.

✓ Bottle Brush Head, sold separately

The Bottle Brush Head is available on its own and fits the same handle. The Dish Brush is sold complete with its head attached. See Are the Dish Brush and Bottle Brush heads interchangeable? for how the swap works.

Spare part Same handle
Koh Bottle Brush Head

Bottle Brush Head

Twists onto the same handle as the Dish Brush. Shaped for bottles, jars and narrow-neck containers.

Koh Dish Brush

Dish Brush

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

Browse all Dish Brush articles

Last reviewed: August 2026 · Koh UK

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