Sweater and Wool Coat Care: A Season-by-Season Guide to Keeping Wool Beautiful

Wool isn't like cotton or synthetic fabric. Each fiber has a natural scale-like structure that can interlock and felt when exposed to heat, agitation, or rough handling, which is why a favorite sweater can shrink two sizes in a single wash cycle.

Cashmere sweater care requires even more caution. Cashmere fibers are finer and more delicate than regular wool, making them more prone to stretching, pilling, and damage from friction. Understanding these qualities is the first step toward treating wool the way it deserves.

Can you wash wool sweaters in a washing machine? In most cases, no — unless the care label specifically says it's machine washable on a wool or delicate cycle. Hand washing is the safer route for nearly every wool and cashmere garment.

Fill a basin with cool water and a wool-safe detergent, then gently submerge the sweater and press water through it without rubbing, twisting, or wringing. Rinse thoroughly with cool water until the soap is gone. Treat cashmere with extra gentleness, using minimal handling and the mildest detergent you can find to protect those fine fibers.

How often should a wool coat be dry cleaned? For most people, once or twice per season is plenty — typically at the start and end of winter, or sooner if the coat is visibly soiled or has absorbed odors. Over-cleaning can actually strip natural oils and wear down the fibers faster.

Between visits to the dry cleaner, brush your coat regularly with a soft-bristled clothes brush to remove surface dirt and refresh the nap. Hang it on a sturdy, wide shoulder hanger after each wear and let it air out before returning it to the closet. Wool coat dry cleaning by a professional remains the best way to handle deep cleaning, structured linings, and tailoring without risking shrinkage or distortion.

Fresh stains should be blotted immediately, never rubbed, which can push the stain deeper and damage fibers. For most spots, a professional cleaner is your safest bet, especially on wool coats with structured interfacing or delicate trims where home remedies can backfire.

To remove pilling from a sweater, use a fabric shaver or a fine-tooth comb and work in gentle, short strokes in one direction. Lay the garment flat, stretch the section slightly, and shave lightly to avoid thinning the fabric. Regular de-pilling after each wear keeps sweaters looking newer for longer.

What is the best way to dry a wool sweater? Never a dryer, and never hanging. Heat causes shrinkage, while hanging a wet wool garment stretches it under its own weight. Instead, lay the sweater flat on a clean towel, gently reshape it to its original dimensions, and roll the towel to squeeze out excess moisture.

Unroll onto a dry towel or mesh drying rack, away from direct sunlight or heating vents, and let it air dry completely flat. This slow, flat-drying method preserves both shape and softness, whether you're caring for a chunky knit or a lightweight cashmere pullover.

How to store winter sweaters properly starts with making sure they're completely clean and dry — stored soil and moisture attract moths and encourage mildew. Fold sweaters rather than hanging them to prevent shoulder stretching, and place them in breathable cotton bags or drawers with cedar blocks to deter pests.

Wool coats should be stored on padded hangers inside breathable garment bags, never plastic, which traps moisture and causes creasing. Choose a cool, dry closet, and give coats a final professional clean before the off-season so they go into storage completely fresh.