By the LaundryMax team · Updated September 30, 2026
Delicate fabrics aren't fragile in an unpredictable way — each one fails for a specific reason, and once you know the reason the care becomes obvious. Wool felts when it's hot, wet and agitated at the same time. Silk and viscose lose strength while they're wet. Lace and loose knits snag and stretch. Everything below follows from those three facts.
The symbols to look for are the tub with a hand in it (hand wash), the tub with two bars (very mild cycle), the square with a horizontal line (dry flat), and the crossed-out circle in a square (don't tumble dry). A crossed-out tub means the garment shouldn't go in water at all — dry cleaning only. All of them are in the laundry symbol guide.
Ordinary detergents usually contain enzymes that break down protein — that's how they remove blood and food stains. Wool and silk are protein fibers, so those enzymes slowly digest the garment. Use a detergent made for wool and silk; they're enzyme-free and gentler on the fiber. A small amount is enough.
A wool or hand-wash program exists precisely to keep the drum's movement to a minimum. Use it with cold water and the lowest spin, put the garment in a mesh bag, and wash a small load — a full drum means more rubbing. Some manufacturers' wool programs carry Woolmark approval, which is a reasonable sign the program is genuinely gentle. The ordinary delicate cycle is not a wool cycle on most machines: it's cooler and slower, but it still agitates.
Wet knitwear is heavy, and hanging it stretches the shoulders and the length. Dry flat on a towel or a mesh rack, patted into shape, away from radiators and direct sun. Turn it once. It takes a day or two, and there's no faster method that doesn't risk the garment.
Silk water-spots, so wash the whole garment rather than dabbing at one area, and dry it out of the sun — sunlight fades and weakens silk. Iron on the reverse side while slightly damp, at the coolest setting, and don't spray it with water while ironing. Many silks are labeled dry clean only because the dye, not the fiber, isn't stable in water; take that seriously for anything colorful.
A mesh bag on the delicate cycle protects them from hooks, zippers and the drum. Fasten bra hooks first. Dry flat or hang by a sturdy point, never by a strap.
Pilling is loose fiber ends rubbing into little balls; it's normal on softer wools and comes off with a comb or a fabric shaver. Moths and their larvae go for soiled wool, so wash or clean knitwear before storing it for the season, and keep it in a breathable bag rather than plastic.
Structured pieces, anything lined, anything with beading or fragile trim, and any silk or viscose in a color you can't afford to see run. Our guide to dry clean only labels covers how to judge it.
Wool's quiet advantage is that it rarely needs washing at all. The fiber resists odor and sheds wrinkles on its own, so a knit that's been worn but not soiled usually just needs airing — laid flat somewhere with moving air, not hung. Wash for actual dirt, sweat against the skin or a visible mark — each wash is a small dose of wear on the garment. The guide to how often clothes need washing covers the rest of the wardrobe.
The stain removers that work on cotton are the ones that damage delicates. Enzyme pre-treatments digest protein fibers the same way ordinary detergent does, and chlorine bleach dissolves wool and silk outright — never use it on either. Act early instead: blot the spill with a dry white cloth without rubbing, then flush it from the back with cool water. If a mark needs more than water, work in a drop of your wool detergent with a fingertip and test it on a hidden seam first — silk in particular can lose dye where it's rubbed. For anything greasy or already set, start from the gentlest options in the stain removal guide or go straight to a professional cleaner.
Mild shrinkage sometimes relaxes; true felting — a dense, matted surface where you can no longer see individual stitches — is permanent, because the fiber's scales have locked together. For the milder case, soak the garment in cool water with a little hair conditioner to soften the fiber, press the water out, then ease it back toward shape while it lies flat on a towel, forcing nothing. It won't always come back — but heat and hanging only make things worse, as the guide to drying without shrinking explains.
Can I use baby shampoo instead of wool detergent?
In a pinch, yes — mild and enzyme-free is what matters. It rinses out less cleanly than a purpose-made wool wash, so rinse thoroughly and go back to the proper product when you can.
Can wool go in the dryer on the no-heat setting?
A tumbling drum is agitation with or without heat, and agitation is one of the three things that felt wool. The risk is smaller cold, but drying flat removes it entirely.
What does "superwash" wool mean?
Superwash wool has been treated so its scales can't lock together — the mechanism behind felting. It genuinely tolerates the machine on the program its label names — but it still stretches while wet, so dry it flat like any other knit.
Can I use vinegar to get a smell out of wool?
A little white vinegar in the rinse water is safe on wool and helps neutralize odor. Keep it well away from other products — chlorine bleach must never be mixed with vinegar or ammonia. A damp-wool smell usually just means the garment dried too slowly; give it more airflow next time.
How do I get wrinkles out of wool without ironing?
Steam, not pressure. Hang the garment in the bathroom while you shower, or hold a steamer just above the surface without touching it. Wool releases creases with steam alone, and pressing it flat can leave shine marks.
LaundryMax flags the hand-wash and dry-flat symbols on every garment it scans and keeps delicates in their own load, so a wool sweater never ends up in the cotton cycle by accident. See how it works.