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How to Wash a Wool Blanket?
Updated Cleaning & Stain Removal
Before washing: always check the care label first — some wool blankets, especially vintage or antique ones, are dry-clean only, and washing them at home risks damage that can't be undone.
Which method is safe for your blanket
| Method | When it's safe | Key rule |
|---|---|---|
| Hand wash | Label says hand wash or wool-safe, or no label (safest default) | Cool water, no wringing, no agitation |
| Machine wash | Label explicitly allows machine washing | Wool/delicate cycle, cold water, slow spin, wash alone |
| Dry clean only | Label says dry-clean, or blanket is vintage/antique/heirloom | Take it to a professional — don't risk it at home |
Can you machine wash 100% wool? Only if the care label says so. Many 100% wool blankets are hand-wash or dry-clean only because even a gentle machine cycle has more agitation than hand washing. If the label doesn't explicitly allow it, hand wash instead.
Can you put a wool blanket in the dryer? No — never use a hot dryer on wool. Heat is what causes shrinking and felting, and this holds even for blankets labeled machine-washable. Always air dry flat.
Hand washing (safest)
- Shake out the blanket and spot-treat any stains gently.
- Fill a tub with cool water and dissolve a small amount of wool-safe detergent (or a gentle soap like Woolite).
- Submerge and soak the blanket for about 15 minutes, gently pressing the water through it. Don't scrub, twist, or agitate.
- Drain and rinse with fresh cool water until the soap is gone.
- Press out water — never wring. Gently squeeze or press the water out. Wringing stretches and damages the fibers.
Machine washing (only if the label allows): use the wool/delicate cycle, cold water, and a slow spin. Wash it alone, not with other laundry.
Drying
- Lay it flat on a clean towel or drying rack, reshaping it to its original dimensions.
- Air dry away from direct heat and sunlight. Never use a hot dryer, radiator, or direct sun — heat shrinks and felts wool.
Vintage and antique wool blankets: treat these more cautiously than a modern blanket, even if there's no label — older wool and dyes can be more fragile, and professional cleaning or gentle spot-cleaning is usually the safer choice over a full home wash.
Tip: wool is naturally odor- and dirt-resistant, so airing it out often means you only need to fully wash it once or twice a season.
Lanolin and natural oils: wool contains natural lanolin oils that help it resist dirt and odor, which is part of why it needs infrequent washing — but harsh detergents (anything not labeled wool-safe) strip these oils along with the dirt, leaving the fibers drier and more prone to felting on future washes. This is the main reason a dedicated wool detergent outperforms a generic one over the blanket's lifespan, not just on wash day.
Reshaping ("blocking") while wet: right after washing, while the blanket is still damp and flat, gently pull and smooth it back to its original dimensions and square corners before it fully dries — wool holds whatever shape it dries in, so this step (called blocking) prevents a slightly stretched or lopsided result from setting in permanently.
Storing between seasons: store a clean, fully dry wool blanket in a breathable cotton bag rather than sealed plastic, with cedar blocks or lavender sachets nearby — wool attracts moths, and both the natural lanolin smell and any leftover food/body oils from incomplete cleaning make it more appealing to them.
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