How to care for merino wool without ruining it

Merino wool is one of the most forgiving natural fibers to wear, but it is also one of the easiest to damage if you wash it the wrong way. Most knitwear that ends up felted, stretched, or pilled has not been worn out. It has been laundered out. Here is what actually matters.

How often does merino actually need washing?

Less often than most people think. Merino has natural antimicrobial properties that mean odors do not set in the way they do with synthetic fibers. A turtleneck worn over a shirt can often go four or five wears before it needs washing. If you air it out between wears, hanging it near an open window for an hour, you extend that further.

The impulse to wash after every wear comes from habits built around cotton and synthetics. Merino rewards a different approach. The more you wash it, the more you stress the fibers, and the faster it pills.

Hand washing versus machine washing

Hand washing in cool water with a small amount of gentle wool wash is the safest option. Fill a basin, submerse the garment, press it gently through the water, and rinse without wringing. Wringing is what causes stretching and distortion.

If you use a machine, use the wool or delicate cycle with cold water and a slow spin. The key is to keep agitation low and temperature consistent. Switching between hot and cold water is what causes felting, not the machine itself.

Lay the piece flat to dry on a clean towel, reshaping it while it is still damp. Never hang a wet knit. The weight of the water will stretch it out of shape.

What to do about pilling

Pilling is friction, not a quality defect. It happens most on areas that rub: underarms, sides, anywhere a bag strap sits. A fabric shaver removes pills cleanly without damaging the underlying fiber. Run it lightly across the surface and the knit will look close to new.

The merino turtlenecks we carry are mid-weight with a tight 2x2 rib, which resists pilling better than a loose-knit or chunky style. But no merino is completely pill-free, and treating it as normal maintenance rather than a sign of failure will save you from replacing good knitwear prematurely.

Storage through the warmer months

Fold, do not hang. Hanging a knit on a hanger for months will cause shoulder bumps that are difficult to reverse. Clean the piece before storing it. Moth larvae are attracted to body oils and food residue on fiber, not to clean wool.

Cedar blocks or lavender sachets in the drawer or storage box are a reasonable precaution. They are not a guarantee, but they help. Check stored knitwear once mid-season to catch any issues early.

If you are unsure whether a piece you bought here is machine-washable, the care label is the final word. And if the label has worn out, come in and ask. We keep records of what we carry and can usually tell you.