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What ingredients are in Bathroom & Shower Cleaner?Updated 8 hours ago

TL;DR: Spray Bathroom & Shower Cleaner onto the surface, spread the foam with a damp sponge or cloth, let it sit a few minutes to break down grime, scrub tough soap scum with the Ultra Pro Bathroom Mitt, then rinse with water. More dwell time means better results. For weekly maintenance, skip the scrub: spray, wait, wipe.


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Koh Bathroom and Shower Cleaner effective
Koh Bathroom and Shower Cleaner before and after

How do I use Bathroom & Shower Cleaner?

Spray Bathroom & Shower Cleaner directly onto the surface. Spread the foam evenly with a damp sponge or cloth so the formula has full surface contact. Let it sit for a few minutes (up to 10 minutes for heavy soap scum or limescale build-up) to break down dirt, soap scum, and body oils. Scrub any remaining grime with the Ultra Pro Bathroom Mitt, then rinse clean with water. More dwell time means better results. For weekly maintenance, skip the scrub: spray, wait, wipe.

✓ Five-step method

1

Spray the foam. Spray Bathroom & Shower Cleaner directly onto the surface. Cover the full area.

2

Spread with Ultra Pro Bathroom Mitt. Even out the foam so every part of the surface has contact with the soft solid blue side.

3

Let it sit. A few minutes for light maintenance, up to 10 minutes for heavier soap scum or build-up. More dwell time means better results.

4

Scrub tough grime. For hardened soap scum, limescale, or textured surfaces, scrub with the striped side of Ultra Pro Bathroom Mitt.

5

Rinse clean. Rinse with water. Sparkling, streak-free shower screens, tiles, and surfaces.


How long should I let it sit?

A few minutes for everyday maintenance cleaning. For heavier soap scum, limescale, or bathrooms that haven't been cleaned in a while, leave the foam on for up to 10 minutes. Don't let it dry out fully, re-spray if needed. Longer dwell time gives the formula more time to break down grime, so you scrub less and get better results. The sweet spot is 2 to 3 minutes for weekly maintenance, around 5 minutes for moderate soap scum, and up to 10 minutes for heavy build-up.

✓ Dwell time by soiling level

Weekly maintenance: 2 to 3 minutes. Moderate soap scum: 5 minutes. Heavy build-up or limescale: up to 10 minutes. Don't let the foam dry out fully. Re-spray if needed.

Maintenance: 2-3 min Moderate: 5 min Heavy: 10 min

What bathroom surfaces can I use it on?

Bathroom & Shower Cleaner is suitable for shower screens, tiles, grout, bathtubs, basins, taps, shower trays, fibreglass, acrylic, stainless steel, chrome, glazed ceramic, and painted surfaces. It's designed for the full bathroom. Spot test on natural stone (marble, travertine, limestone) and on any surface you're unsure about. Avoid prolonged contact with aftermarket glass coatings or tint films, since these can be sensitive to surfactants over time.

✓ Works across the bathroom

Shower screens, tiles, grout, bathtubs, basins, taps, shower trays, fibreglass, acrylic, stainless steel, chrome, glazed ceramic, painted surfaces. Spot test on natural stone or anything you're unsure about.

Shower screens Tiles & grout Bathtubs & basins Chrome & stainless

How often should I use Bathroom & Shower Cleaner?

Once a week for maintenance cleaning prevents build-up and keeps the bathroom consistently fresh. For shower screens specifically, a quick spray and wipe after use (once or twice a week) prevents soap scum from ever hardening in the first place. The 1.8L refill pack covers around 3 months of weekly use. For households that want to set and forget, Subscribe and Save aligns deliveries with your usage cycle.

✓ Weekly for maintenance

Weekly is the sweet spot for keeping a bathroom consistently fresh. For shower screens, a quick spray and wipe after use prevents soap scum from ever hardening. One 1.8L refill lasts around 3 months of weekly cleaning.

Weekly clean 1.8L lasts 3 months

Koh Bathroom and Shower Cleaner 1.8L

Bathroom & Shower Cleaner

12 ingredients, gentle pH 8, made in Australia. Sensitive Choice approved. Dermatest tested. Eczema Association recognised.

Koh Bathroom and Shower Starter Kit

New at Koh?

Bathroom & Shower Starter Kit pairs the cleaner with Ultra Pro Bathroom Mitt. Everything you need to start.

Koh Perks rewards and ways to save

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Members earn points on every purchase, refer a friend, and redeem for discounts. Find all the ways to save in one place.

Browse all Bathroom & Shower Cleaner articles

Last reviewed: April 2026


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