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What fabrics can I use Stain Remover on?Updated 13 days ago

TL;DR: Stain Remover is safe on cotton, polyester, nylon, denim, microfibre, and most common household fabrics. Avoid on wool, silk, cashmere, alpaca, mohair, rayon, viscose, and linen, where the enzymes can act on the fibres themselves over repeated use. Spot-test anything delicate or unfamiliar before treating a visible area.


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Koh Stain Remover
Koh Stain Remover with Foaming Spray Bottle

Which fabrics is it safe on?

Stain Remover is safe to use on cotton, denim, and cotton blends, polyester, nylon, acrylic and other synthetics, microfibre and technical sportswear, and lyocell, Tencel, and modal blends. These cover the bulk of everyday household laundry. Always follow the garment care label, particularly for technical fabrics with specific care instructions.

✓ Safe to use on

Cotton, denim, and cotton blends

Polyester, nylon, acrylic, and other synthetic fibres

Microfibre and technical sportswear

Lyocell, Tencel, and modal

Most everyday household textiles (towels, bed linen, bibs, kids' clothes)

Always follow the garment care label, particularly for technical fabrics with specific care instructions.


Which fabrics need a different approach?

Avoid Stain Remover on wool, silk, cashmere, alpaca, mohair, rayon, viscose, and linen. The enzymes in the formula can act on these fibres themselves over repeated use, causing gradual weakening or pilling. For these fabrics, use a wool-safe enzyme-free detergent and follow the garment care label. For anything unfamiliar, spot-test on a hidden seam first.

⚠ Avoid on these fabrics

The enzymes in the formula can act on these fibres themselves over repeated use, causing gradual weakening or pilling. For these fabrics, use a wool-safe, enzyme-free detergent and follow the garment care label.

Wool Silk Cashmere Alpaca Mohair Rayon Viscose Linen

✓ For anything unfamiliar

If the care label is missing, the fabric is unfamiliar, or the garment is delicate or sentimental, spot-test on a hidden seam before treating the visible area. The 3-step method below covers it.


How do I spot-test?

To spot-test Stain Remover on an unfamiliar fabric, spray a small amount on a hidden seam or inside hem. Wait 5 to 10 minutes, rinse with cool water, and pat dry. Check for colour change, weakening, or distortion. If the fabric looks and feels normal, treat the visible stain. If you're unsure, leave it 24 hours and check again before committing.

✓ Spot-test in 3 steps

1

Spray a small amount on a hidden seam or inside hem.

2

Wait 5 to 10 minutes, rinse with cool water, and pat dry.

3

Check for colour change, weakening, or distortion. If the fabric looks and feels normal, treat the visible stain. For sentimental or expensive items, leave 24 hours and check again before committing.


What if I used it on wool or silk by mistake?

If you've used Stain Remover on a wool or silk garment by mistake, rinse the area immediately with cool water, then handwash gently with a mild detergent suitable for delicates. Avoid heat and tumble drying until the fabric looks and feels normal. A single accidental spray is usually recoverable with prompt rinsing. The issue is repeated exposure, so switch to a wool-safe detergent for that garment from here on.

⚠ What to do

1

Rinse the area immediately with cool water.

2

Handwash gently with a mild detergent suitable for delicates.

3

Avoid heat and tumble drying until the fabric looks and feels normal.

A single accidental spray is usually recoverable with prompt rinsing. The issue is repeated use, so switch to a wool-safe detergent for that garment from here on.


Koh Stain Remover

Stain Remover

Spray-on pre-treat for stubborn stains. Spray, wait, then wash.

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Stain Remover Starter Kit pairs Stain Remover with the Foaming Spray Bottle for targeted application.

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Last reviewed: May 2026


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