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Is Universal Cleaner chemical-free?Updated a day ago

TL;DR: Not technically. Universal Cleaner is not chemical-free because water and potassium hydroxide are both chemicals. But it is free from the harsh chemicals, fragrances, phosphates, parabens, bleach, and additives found in most conventional cleaning products. Just two simple ingredients. GECA eco-certified, Sensitive Choice approved, Allergy UK certified, and made in Australia.

Last reviewed: April 2026

Koh Universal Cleaner safe for homes and surfaces
Koh Universal Cleaner GECA eco-certified

Is Universal Cleaner chemical-free?

Not technically. Everything is made of chemicals, including water (H₂O). The more useful question is which chemicals a product contains and whether they are safe. Koh Universal Cleaner contains just two ingredients: potassium hydroxide (the alkali degreaser that does the cleaning work) and reverse osmosis water (an ultra-pure solvent). It is free from fragrances, phosphates, parabens, chlorine, bleach, harsh surfactants, dyes, preservatives, and animal-derived ingredients. The common nasties found in most conventional cleaning products are not in the formula.

✓ What is in the box

Everything is made of chemicals, including water (H₂O). The more useful question is which chemicals a product contains and whether they are safe. Universal Cleaner contains just two: potassium hydroxide (alkali degreaser) and reverse osmosis water (ultra-pure solvent).

Potassium hydroxide Reverse osmosis water

⚠ What is not in the box

No fragrances, phosphates, parabens, chlorine, bleach, harsh surfactants, dyes, preservatives, or animal-derived ingredients. The common nasties in conventional cleaners are not here.

No fragrance No phosphates No parabens No bleach

Is Universal Cleaner safe for homes with kids, pets, and sensitivities?

Yes. Koh Universal Cleaner holds independent certifications for sensitivity, eco impact, and ethical credentials. GECA eco-certified since 2016. Sensitive Choice approved for people with asthma and sensitive skin. Allergy UK certified. Eczema Association of Australasia certified. Vegan and cruelty-free. Made in Australia. The two-ingredient, fragrance-free formula is what allows Koh Universal Cleaner to meet these independent thresholds. Fewer additives means fewer irritants and allergens. Pet-friendly, kid-friendly, and family-friendly when used as directed.

✓ Independent credentials

GECA eco-certified since 2016. Sensitive Choice approved (for people with asthma and sensitive skin). Allergy UK certified. Eczema Association of Australasia certified. Vegan. Cruelty-free. Made in Australia. The two-ingredient, fragrance-free formula is what allows Universal Cleaner to meet these independent thresholds. Fewer additives means fewer irritants and allergens.

GECA certified Sensitive Choice Allergy UK Eczema Association Vegan Cruelty-free Pet-friendly Kid-friendly
Koh Universal Cleaner 2L

Universal Cleaner

2L bag-in-box refill. The same two-ingredient formula in our most popular size. Approximately 3 months of cleaning for the average home.

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