Washing merino wool at home without ruining it
Merino wool has a reputation for being delicate, and some of that reputation is deserved. But the main risks are specific and avoidable. Most merino knitwear can be washed at home without any specialist equipment, as long as the two things that cause felting are avoided: heat and agitation.
The two things that cause felting
Wool fibres have a scaly surface structure. When those scales are exposed to heat and mechanical agitation at the same time, they lock together and the fabric shrinks and stiffens permanently. This is the same process that makes boiled wool, applied accidentally to a jumper.
The domestic washing machine is the most common cause of felted knitwear because it combines both factors. A cold, gentle cycle with minimal spin reduces the risk significantly, but hand washing in cool water is still the safest option for a piece you care about.
Hand washing step by step
Fill a basin with cool water and add a small amount of a wool-specific detergent or a plain, unscented soap. Submerge the garment and press it gently through the water. Do not wring, twist or rub. Leave it to soak for ten minutes, then drain the basin and press the water out by folding the garment against the side of the basin.
Rinse in cool water of the same temperature as the wash water. A sudden change in temperature is another cause of felting. Repeat the rinse once, then press out as much water as you can without wringing.
- Use cool water throughout, wash and rinse at the same temperature
- Press rather than wring or twist
- Use a wool-specific or plain unscented detergent
- Soak for ten minutes, do not agitate
- Rinse twice to remove all detergent
Drying and storage
Lay the garment flat on a clean towel and reshape it while it is still damp. Merino will dry in the shape it is left in, so it is worth taking a moment to pull the sleeves to the right length and smooth the body. Leave it flat until completely dry; hanging a wet merino garment will stretch it out of shape.
Store merino folded rather than hanging. A cedar block nearby will deter moths. If the garment develops pills, a fabric shaver on a low setting will remove them without damaging the underlying knit.
The ribbed merino roll-neck in the current collection comes with a care card. If you have a specific question about washing or storage, email hello@silver-raindrop.com and we will answer it directly.