Wool and Cashmere Sweater Care: The Complete Guide to Washing, Drying, and Keeping Them Beautiful

The label is not a suggestion, it's a formula written for that specific yarn and construction. Dry clean only usually signals a loose knit, a blend prone to shrinkage, or a finish that won't tolerate water agitation. Hand wash cold means the fiber can handle water, just not machine movement or heat.

Look for fiber content too. A hundred percent cashmere behaves differently than a cashmere-wool blend, and blends with synthetic fibers often have more washing flexibility than pure natural fiber pieces. When in doubt, or when a label has worn away entirely, treat the garment as hand wash cold and air dry flat.

Yes, you can wash wool and cashmere sweaters at home, and for most garments it's the gentlest option available. Fill a basin with cool or lukewarm water and a small amount of pH-neutral wool wash or mild shampoo. Submerge the sweater and press water through it gently. Never rub, twist, or wring.

Let it soak for five to ten minutes, then drain the basin and press out the soapy water without lifting the garment, which prevents stretching under its own wet weight. Refill with clean water at the same temperature and rinse the same way, pressing rather than agitating, until the water runs clear.

Lay the sweater on a clean towel, roll it up to blot out excess moisture, then unroll and move to a dry towel for shaping.

Some cashmere can go in a machine, but only under specific conditions: a delicate or wool cycle, cold water, a mesh garment bag, and a detergent formulated for fine fibers. Even then, it's a calculated risk rather than a guarantee, since machine drums still create friction and movement that hand washing avoids entirely.

If you've had a cashmere sweater shrink in the wash, there is a fix, though it works best when caught early. Re-wet the garment in lukewarm water with a few drops of hair conditioner or baby shampoo, which helps relax the fibers. Gently stretch the damp sweater back toward its original dimensions on a towel, pinning or weighting the edges if needed, and let it air dry fully in that stretched position. This won't reverse severe felting, but it can recover a garment that's shrunk moderately.

Pilling happens where fabric rubs against fabric or skin, most often at underarms, cuffs, and where a bag strap sits. It's not a sign of poor quality, it's simply friction doing its work over time.

To remove it, use a fabric shaver or a sweater comb designed for knitwear, working in short, light strokes in one direction over a flat surface. A disposable razor pulled very gently across the fabric works in a pinch, though it carries more risk of snagging. Avoid pulling pills off by hand, which can loosen the weave.

Once pilling is gone, restore softness by finishing your next hand wash with a rinse that includes a small amount of hair conditioner, then air drying flat. This recoats the fibers and brings back the loft that friction and washing gradually flatten.

The best way to dry a cashmere sweater is flat, on a clean towel, reshaped to its original measurements while still damp. Never hang a wet wool or cashmere sweater, gravity will stretch it at the shoulders and pull the whole garment out of shape permanently.

Roll the sweater in a dry towel first to remove excess water, then lay it on a fresh towel away from direct sun or heating vents. Gently ease the sleeves, hem, and neckline back into shape by hand. Flip it once halfway through drying so both sides get air circulation, and expect the process to take a full day or more depending on thickness and humidity.

Store finished sweaters folded, never on hangers, in a drawer or on a shelf with cedar blocks nearby to deter moths.