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Can I pre-wash soak with Sensitive Laundry Liquid?Updated 12 days ago

TL;DR: Yes. Add 2 pumps (8mL) of Sensitive Laundry Liquid to 5 litres of lukewarm water, soak garments up to 2 hours, then wash as normal. Helps break down stubborn stains before the main cycle. ⚠ Not for wool, silk, or other animal fibres.


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Koh Sensitive Laundry Liquid in use
Koh Sensitive Laundry Liquid before and after

How do I pre-soak?

To pre-soak clothes with Koh Sensitive Laundry Liquid: fill a tub, sink, or bucket with 5 litres of lukewarm water (cool to lukewarm, not hot, hot water can degrade the enzymes and set protein-based stains like sweat and food). Add 2 pumps (8mL) of Sensitive Laundry Liquid and mix through. Submerge garments fully and soak for up to 2 hours, longer than that doesn't add benefit and can stress the fabric. Pre-soaking gives the enzyme system more contact time with stubborn or set-in stains before the main wash, which often makes the difference on heavily soiled items. After soaking, wash as normal in your machine using your usual dose. Not suitable for wool, silk, cashmere, alpaca, mohair, or angora, the enzymes can break these fibres down.

Pre-soak steps

1

Fill a tub, sink, or bucket with 5 litres of cool to lukewarm water (not hot).

2

Add 2 pumps (8mL) of Sensitive Laundry Liquid and mix through.

3

Submerge garments fully and soak for up to 2 hours.

4

Wash as normal in your machine using your usual dose.

✓ Why pre-soaking helps

Pre-soaking gives the enzyme system more contact time with stubborn or set-in stains before the main wash. Soaking longer than 2 hours doesn't add benefit and can stress the fabric. Hot water degrades enzymes and can set protein-based stains, so use cool or lukewarm only.

2 pumps (8mL) 5 litres water Up to 2 hours

⚠ Not for wool, silk, or other animal fibres

The enzymes in Sensitive Laundry Liquid can break down protein-based fibres, longer soak times make this worse. Avoid wool, silk, cashmere, alpaca, mohair, and angora. Hand-wash these with a wool-and-silk-specific detergent instead.


Koh Sensitive Laundry Liquid bag-in-box

Sensitive Laundry Liquid

Around 60 washes per box. Sensitive Choice approved, Dermatest tested. Septic and greywater safe.

Browse all Sensitive Laundry Liquid articles

Last reviewed: July 2026 · Koh UK

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