hand washing a merino wool jacket in a basin of lukewarm water

How to wash merino wool so it stays soft and beautiful for years

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Merino wool rarely needs washing: air it after wearing. When it does need washing, hand wash in lukewarm water (20 to 30 degrees) with a wool detergent, do not wring, and dry it flat on a towel. Never use a tumble dryer.

Step

Do

Do not

Refresh

Air outdoors or on the balcony for a few hours

Wash after every wear

Wash

Hand wash at 20 to 30 degrees with wool detergent

Hot water, rubbing or kneading

Rinse

Same lukewarm temperature

Switch between hot and cold

Dry

Press out gently, lay flat on a towel

Wring, hang wet, tumble dry, dry in direct sun

Store

Fold loosely with lavender

Cram into tight drawers

Brush

Twice a year, brush gently with a wool brush, in the direction of the knit

Use stiff brushes or brush when wet

Airing merino wool – how to refresh clothes without frequent washing

Merino wool just needs a good airing. Sounds simple? Not at all. Thanks to its wonderful properties, merino wool is resistant to dirt and odors. It shouldn't absorb unpleasant smells or dirt. To refresh it, hang the garment on the balcony and wait a few hours.

What to use for washing merino wool

Hand washing merino wool with liquid

If you need to wash the wool, we recommend hand washing in lukewarm water, not cold or hot (optimal temperature is 20-30 degrees). Use a special wool washing liquid (e.g. Sonett) in the proportions given by the manufacturer. Merino wool is a very delicate fabric, so handle it carefully. During washing, do not press or knead it. Rinse in water at the same temperature as washing. Heat and rubbing make wool felt and shrink, so keep the water the same lukewarm temperature and do not wring it. Gently squeeze out, do not twist the wool, lay flat to dry.

Washing merino wool in the washing machine

NOTE! Our merino brands recommend hand washing. If an item's care label allows the machine, use the wool programme at 20 to 30 degrees and a spin of 400 rpm at most. 

You can wash merino wool in the machine if the clothing manufacturer allows it. Check the care label for merino wool washing instructions. Select the wool program in the washing machine. If the machine doesn't have such a program, pay attention to the washing parameters:

Washing temperature should be around 20-30 degrees, spinning maximum 400 revolutions, or none at all.

After washing, remove the garment immediately and dry it the same way as hand washing, i.e., flat and horizontal, e.g., on a towel. Do not wash merino wool clothing with other items. Best to wash separately and individually.

How to dry merino wool properly

After washing, never dry merino clothes in the sun or in a dryer. Best to lay them flat on a towel to maintain their shape and elasticity. Merino fibers are delicate and can deform if subjected to too much force. Do not dry merino clothing in a tumble dryer.

Ironing merino wool – is it necessary?

Merino wool doesn't need ironing; even if it wrinkles a bit, it will quickly return to its original state. Just hang the garment, perhaps in a steamy place like the bathroom after a bath, and wait until it returns to its original shape.

Brushing merino jackets and vests

Heavier merino pieces such as jackets, vests and cardigans benefit from regular brushing. A specialized wool brush gently lifts dust, lint and loose surface fibres. It also keeps the knit looking fresh between washes, so you wash the garment less often.

How to brush merino wool:

  • Choose the right brush. Use a soft wool or garment brush with natural bristles, or a dedicated merino/knitwear brush. Avoid stiff clothes brushes and sticky lint rollers, which can pull at the fibres.
  • Brush dry garments only. Never brush a damp or wet item, because wet fibres stretch and tangle more easily.
  • Lay it flat or hang it on a padded hanger. A flat surface keeps the knit from stretching.
  • Brush lightly and in one direction. Follow the direction of the knit with short, gentle strokes, and don’t press hard.
  • Pay attention to friction zones. Underarms, cuffs, elbows and areas under bag straps are where pilling starts first.
  • Remove pills by hand or with a proper tool. If small pills do form, which is normal for a natural fibre, lift them off gently rather than pulling. Pilling usually fades after the first few wears.

A quick brush after wearing, combined with airing, is often all a merino jacket or vest needs.

How to care for merino wool

Use special care products

If you want to increase the durability of your merino wool clothes, invest in special wool washing products. They can help maintain the softness and elasticity of the material while providing thorough cleaning. A good solution is also using natural alternatives. During rinsing, you can use lanolin, which additionally protects the material and keeps it soft and pleasant.

Stain removal tips

If your merino wool clothes get stained, try to remove the stains as quickly as possible. Use a gentle washing agent and rinse the stain thoroughly. Avoid strong detergents that could damage the fiber structure.

How to store merino wool clothing

Merino wool clothes like space. Therefore, it's not recommended to store them in tight places. The fabric will then lose its fluffiness and is prone to faster felting. A good solution is to store woolen clothes flat, without stacking too many pieces on top of each other.

Protecting merino clothes from moths

Remember to place a sachet of fresh lavender or an insect repellent in the wardrobe where you store merino wool clothes. Unfortunately, wool is one of the favorite materials for moths, which can cause a lot of damage.

FAQ

How often should I wash merino? Air it after wearing and wash only when it is visibly dirty or after several wears. Merino resists odour, so it stays fresh longer than cotton.

Can I use fabric softener? No. Use a wool detergent. A little lanolin in the rinse can keep the fibre soft.

What if my baby spits up on it? Treat the stain quickly with a gentle stain remover and rinse well in lukewarm water.

Can I tumble dry merino? No. Tumble drying and direct sun can deform the fibres. Lay it flat.

Should I brush my merino jacket or vest? Yes. Brush it gently with a soft wool brush after airing to remove dust and lint and to limit pilling.

Summary

Proper care of merino wool clothes is key to preserving their beauty, softness, and durability for many years. Merino doesn't require frequent washing. If we decide to wash, follow a few rules. Applying these simple tips will help you enjoy your favorite items from this unique material longer and in the best condition. If you want to enjoy merino wool clothes for a long time, we recommend following our tips.

Not sure which fabric to buy? See our merino vs cashmere vs cotton comparison. 

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Natalia Brunner, founder of Dear Gaia

About the author

Natalia Brunner is the founder of Dear Gaia, a Swiss online shop for certified baby and children's clothing from small European makers. She writes about dressing children in natural, safe and long-lasting fabrics.