Pre-order now. Orders ship Jan 11th.
Skip to content
Pre-order now

How to wash · 1 min read

How to Wash a Wool Sweater Without Shrinking It

In this article
  1. Why wool shrinks
  2. Why skip enzymes
  3. Hand washing
  4. Machine washing

We've all seen it. A cozy sweater goes in. A sweater for a toddler comes out. Wool can be washed at home, though. You just have to be gentle.

Quick answer: hand wash or use the wool cycle, keep water cool, use our gentle sheet or Just 7 (not enzyme formulas), never wring and dry flat.

Why wool shrinks

Wool fibers have tiny scales. Heat, agitation and sudden temperature changes make them lock together. That's felting. Great for slippers. Bad for sweaters.

Why skip enzymes

Wool is a protein fiber. Protease enzymes break down protein. You can see the problem. Use our gentle sheet or Just 7 for wool and silk, and save Just 9 for other loads.

Hand washing

  1. Fill a basin with cool water and dissolve half a sheet.
  2. Submerge the sweater and press gently. Don't scrub.
  3. Soak 10 minutes.
  4. Rinse in cool water of the same temperature.
  5. Press water out. Roll in a towel.
  6. Dry flat and reshape.

Machine washing

Only if the label says it's machine washable. Use the wool cycle, cold water and a mesh bag.

FAQ

Can I put a wool sweater in the washing machine? Only if the label allows it. Use the wool cycle.

Can I use enzyme detergent on wool? It's best not to. Enzymes can break down protein fibers.

How do I unshrink a wool sweater? Sometimes a soak in lukewarm water with a little conditioner helps, but results vary.

Which Just sheet for wool? Our gentle sheet or Just 7.

Seven ingredients. Zero compromise.

Pre-order now. Orders ship Jan 11th. 7% of every sale goes to animal sanctuaries and nonprofits.†

Pre-order now

Orders ship Jan 11th.

Leave your email and we'll follow up with next steps, with subscribe and save from day one.

And from the first pouch, 7% of every sale goes to animal sanctuaries and nonprofits.†

Who's in your home? (optional)

Orders ship Jan 11th. No spam, no sharing your address.