Can I Wash a Cashmere Sweater?
Yes — And It Is Better Than Dry Cleaning
You can absolutely wash a cashmere sweater at home. In fact, hand washing is recommended over dry cleaning for regular cashmere sweaters. Dry cleaning solvents strip the natural lanolin oils that make cashmere soft. Over time, dry-cleaned cashmere becomes dull and stiff. Home washing with the right method preserves those oils and keeps the fiber soft for years.
The "dry clean only" label is a manufacturer's liability precaution, not a fiber requirement. Cashmere comes from goats that live outdoors in rain, snow, and wind. The fiber handles water just fine — it is heat, agitation, and harsh chemicals that cause damage.
The Rules (All of Them)
There are only five rules for washing cashmere. Follow all five and the sweater comes out perfectly every time.
- Cold water only. 30°C (86°F) maximum. Hot water felts cashmere — the fiber scales lock together permanently, shrinking and stiffening the sweater.
- Gentle detergent. One teaspoon of cashmere detergent, wool wash, or baby shampoo. Never regular laundry detergent (contains enzymes that digest protein fibers), fabric softener, or bleach.
- No agitation. Soak for 20 minutes. Press gently a few times. No rubbing, scrubbing, twisting, or wringing. The detergent lifts dirt over time — friction just damages the fiber.
- Rinse thoroughly. Drain, refill with clean cold water, submerge and press gently. Repeat until the water is completely clear (2-3 rinses). Detergent residue dries stiff.
- Dry flat. Roll in a towel and press to remove water. Lay flat, reshape to original dimensions, air dry 12-24 hours at room temperature. Never hang, never tumble dry.
Hand Wash vs Machine Wash
| Method | When to Use | Risk Level |
|---|---|---|
| Hand wash | All cashmere — the safest method | Zero risk when done correctly |
| Machine wash (wool cycle) | Everyday cashmere, if your machine has wool cycle + cold water + low spin ≤600 RPM | Low risk with correct settings |
| Machine wash (regular cycle) | Never | High — likely felting and shrinkage |
If your washing machine has a dedicated wool or delicate cycle with cold water and adjustable spin speed (600 RPM or below), machine washing is a safe option. Use a mesh laundry bag, cashmere detergent, and wash alone or with one other delicate.
If your machine only has standard cycles, hand wash. A regular "gentle" cycle still agitates too much and spins too fast for cashmere.
How Often
- Worn over a base layer: every 5-7 wears
- Worn against skin: every 3-4 wears
- Stained or smelling: wash now
- Going into storage: always wash first — body oils attract moths
Between washes, air the sweater overnight after wearing. Spot clean isolated stains with a damp cloth and a drop of cashmere detergent. The less you wash cashmere, the longer it lasts.
What If Something Goes Wrong?
| Problem | Cause | Fix |
|---|---|---|
| Sweater shrank | Water too hot or tumble dried | Soak in conditioner and stretch |
| Sweater feels stiff | Detergent residue | Rinse again in clean cold water until clear |
| Pilling after wash | Too much agitation | Remove pills with a cashmere comb — normal if you rubbed or scrubbed |
| Shape distorted | Hung while wet or not reshaped | Rewet, lay flat, reshape, dry again |
| Felted (stiff, matted) | Hot water + agitation | Not reversible — felting is permanent |
Most cashmere washing problems are caused by heat or agitation — follow the five rules above and none of these happen. For the full hand wash walkthrough: hand washing guide.