How to Hand Wash Cashmere

By Jeeves of Belgravia New York - Expert Garment Care

How to hand wash a cashmere sweater step by step

Hand washing cashmere is simple if you keep it gentle. The goal is to let the water and a cashmere-safe detergent do the work, not your hands.

1. Check for stains first. If you see a spot, treat it lightly with a little dish soap and water, or a small amount of vinegar and water. Skip harsh all-purpose stain removers with enzymes.
2. Fill a basin with cool to warm water. Use enough water to fully submerge the sweater without crowding it.
3. Add a detergent made for cashmere or wool. Use only a small amount.
4. Submerge and press gently. Move the sweater up and down a few times. Do not rub, twist, or scrub.
5. Let it sit briefly. A short soak helps loosen dirt and body oils.
6. Rinse until the water runs clear. Remove all soap so residue does not stiffen the fibers.
7. Remove excess water by squeezing. Never wring cashmere.
8. Roll it in a towel. Lay the sweater flat on a thick clean towel, roll it up, and press to pull out more moisture.

What detergent to use on cashmere

Use a detergent made for cashmere, wool, or other animal fibers. These formulas are designed without enzymes, bleach, or optical brighteners, which can damage protein fibers over time.

Why this matters: cashmere is a protein fiber, so enzyme-heavy detergents can be too aggressive. A good cashmere detergent often includes conditioning ingredients that help keep the fibers soft and hydrated.

If you do not have a specialty detergent, choose the mildest detergent you own and use very little. But for regular care, a cashmere-safe detergent is the better choice.

How long should cashmere soak?

Cashmere only needs a short soak. Think minutes, not hours. Letting it sit briefly in the wash water is enough to loosen dirt without overworking the fibers.

Do not leave cashmere soaking for a long time, especially in hot water or with a strong detergent. Extended soaking can stress the fibers and increase the chance of stretching or texture changes.

How to dry cashmere without stretching or shrinking

Drying is where most damage happens, so be careful here. Cashmere should always be dried flat.

1. Press out water gently. Squeeze, do not wring.
2. Use the towel roll method. Roll the sweater in a clean, thick towel and press to absorb moisture.
3. Reshape while damp. Lay it flat and gently smooth it back to its original size and shape.
4. Let it air dry flat. Put it on a dry towel or mesh drying surface away from direct heat and sunlight.

Do not hang dry cashmere. A wet sweater is heavy, and hanging can stretch the shoulders and body out of shape. Do not tumble dry either.

Will hand washing shrink cashmere?

Hand washing itself usually does not shrink cashmere if you use cool to warm water, gentle motion, and flat drying. Shrinkage usually happens from heat, agitation, or drying mistakes.

The biggest risks are hot water, aggressive rubbing, wringing, and machine drying. If you avoid those, hand washing is one of the safest ways to clean cashmere at home.

If your sweater is especially delicate, heavily stained, or already misshapen, professional cleaning may be the safer option.