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What are the ingredients of Bathroom & Shower Cleaner?Updated 9 days ago

TL;DR: Bathroom & Shower Cleaner contains twelve ingredients, designed to cut soap scum, body oils and bathroom grime. It is formulated at a gentle pH of around 8, made in Australia, with a shelf life of about 12 months. It is Sensitive Choice approved, Dermatest tested and recognised by the Eczema Association of Australasia. There is no chlorine bleach, no added fragrance, no phosphates and no quaternary ammonium disinfectants. The full list, with what each ingredient does, is below.


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Koh Bathroom and Shower Cleaner 1.8L
Koh Bathroom and Shower Cleaner product benefits

What are the ingredients of Bathroom & Shower Cleaner?

Bathroom and Shower Cleaner contains twelve ingredients, listed here in INCI order. Aqua, deionised water, is the solvent base that carries the other ingredients and rinses cleanly off surfaces. Ethanol is a solvent that cuts oils and helps the foam spread evenly. Sodium lauryl sulfate is a low-foam wetting surfactant. Cocamidopropyl betaine is a mild surfactant. Sodium xylene sulfonate is a hydrotrope that keeps the formula stable and evenly mixed. Sodium metasilicate pentahydrate is a builder that helps with grease. Trisodium dicarboxymethyl alaninate is a chelator that grips hard-water minerals. Polyacrylic acid sodium salt is an anti-redeposition agent that stops lifted soil settling back on the surface. Xanthan gum is the thickener. Phenoxyethanol is the preservative. Lipase is an enzyme that breaks down fats and body oils. Tocopheryl acetate is vitamin E, included as an antioxidant and a skin-friendly ingredient.

✓ All twelve, in INCI order

Aqua (deionised water). Solvent base. Carries the other ingredients and rinses cleanly off surfaces.

Ethanol. Solvent. Cuts oils and helps the foam spread evenly across surfaces.

Sodium lauryl sulfate. Low-foam wetting surfactant. Wets the surface and lifts soil.

Cocamidopropyl betaine. Mild surfactant. Works alongside the above to loosen soap scum and body oils.

Sodium xylene sulfonate. Hydrotrope. Keeps the formula stable and evenly mixed.

Sodium metasilicate pentahydrate. Builder. Helps the formula deal with grease.

Trisodium dicarboxymethyl alaninate. Chelator. Grips hard-water minerals so they rinse away rather than redeposit.

Polyacrylic acid sodium salt. Anti-redeposition agent. Stops lifted soil settling back onto the surface.

Xanthan gum. Thickener. Gives the foam enough body to cling to vertical surfaces.

Phenoxyethanol. Preservative. Keeps the formula stable over its shelf life.

Lipase. Enzyme. Breaks down fats and body oils.

Tocopheryl acetate (vitamin E). Antioxidant, and a skin-friendly ingredient.


What is not in Bathroom & Shower Cleaner?

Bathroom and Shower Cleaner is formulated without the harsh chemicals found in conventional bathroom cleaners. There is no chlorine bleach, no added or synthetic fragrance, no phosphates, no quaternary ammonium disinfectants, no benzalkonium chloride, no parabens and no synthetic dyes. The formula is also low in sodium, so it does not harm the beneficial microbes in septic and greywater systems, and it is made from readily biodegradable ingredients. It is Sensitive Choice approved, Dermatest tested and recognised by the Eczema Association of Australasia.

✓ Left out on purpose

No chlorine bleach (sodium hypochlorite). No added fragrance. No phosphates. No quaternary ammonium disinfectants, and no benzalkonium chloride. No parabens. No synthetic dyes. Low in sodium, so it does not harm the microbes in septic and greywater systems, and made from readily biodegradable ingredients.

No chlorine bleach Fragrance-free No phosphates No quats Low sodium Readily biodegradable

What is the pH, shelf life and origin?

Bathroom and Shower Cleaner is formulated at a pH of around 8, which is mildly alkaline, just above neutral pH 7. That is deliberately gentle compared with traditional bathroom cleaners, which are often either strongly acidic, such as vinegar-based descalers at pH 2 to 3, or strongly alkaline, such as ammonia-based products at pH 11 to 13. The mild pH is gentle enough for the product to be Dermatest tested and Eczema Association recognised, while still handling soap scum, body oils and mineral deposits. Shelf life is approximately 12 months from the date of manufacture when stored sealed, cool and out of direct sunlight. Do not freeze it or expose it to heat. It is made in Australia.

✓ pH around 8

Mildly alkaline, just above neutral. Traditional bathroom cleaners are often strongly acidic, such as vinegar-based descalers at pH 2 to 3, or strongly alkaline, such as ammonia products at pH 11 to 13. Effective without the harshness.

pH 8 Mildly alkaline

✓ Shelf life, storage and origin

Around 12 months from manufacture when stored sealed, cool and out of direct sunlight. Do not freeze it or leave it in the heat. Made in Australia.

~12 months Cool and sealed Made in Australia

Where can I find the Safety Data Sheet?

The Safety Data Sheet is available for technical or workplace safety compliance, and it covers the same formula sold here. If you need it for a workplace COSHH assessment, a landlord or a facilities team, the SDS is the document to hand over rather than this page. If you need anything the SDS does not cover, contact Koh and we will help.

✓ Safety Data Sheet

If you need the formal document for a workplace assessment, a landlord or a facilities team, the Safety Data Sheet is what to hand over rather than this page.

SDS Workplace use

Koh Bathroom and Shower Cleaner in a bathroom

Bathroom & Shower Cleaner

Twelve ingredients, pH 8, fragrance-free, made in Australia. Sensitive Choice approved and Dermatest tested.

Koh Bathroom Refill Kit

Bathroom Refill Kit · same formula, restocked

Once you know the ingredient list works for your home, the refill kit keeps you topped up with the same twelve-ingredient formula.

Browse all Bathroom & Shower Cleaner articles

Last reviewed: August 2026 · Koh UK

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