You bought a good pair of maternity compression socks, they made a real difference to how your legs felt at the end of the day, and then somewhere around week six they stopped gripping properly and started sagging around the ankle.
Nine times out of ten that's a laundry problem, not a sock problem. Compression socks are held together by elastic threads, and elastic has a short list of things it genuinely hates. Avoid those and a pair will keep doing its job for months. Wash them in with the towels and you can flatten a good pair in a fortnight.
Here's how to look after them properly, and it takes less effort than you'd think.
A quick word on your legs, not your laundry
If the swelling itself is the thing bothering you, laundry advice only goes so far. Jess at The Mama Physio is a women's health physio who works with exactly this: heavy legs, swelling, and how to keep moving comfortably through pregnancy.
And one thing we'd rather over-share than under-share. Swelling that comes on suddenly, swelling in your face or hands, a bad headache with it, or pain and swelling in one calf only, none of those are laundry questions. Call your midwife or GP that day. Pregnancy, Birth and Baby has more on what's typical and what isn't.
Why normal washing habits wreck them
Graduated compression works because the fabric is knitted with elastic fibres that stretch as you pull the sock on and hold firm once it's there. Healthdirect Australia has general information on how compression stockings are used, and the practical point is that the pressure gradient only does anything while the fabric is still capable of holding it.
Three habits do the damage:
-
Hot water. Heat weakens elastic threads over time until they stop recovering.
-
Fabric softener. It leaves a fine coating across the fibres, which clogs the weave and breaks down elastane. Skip it entirely, along with bleach and stain removers.
-
The tumble dryer. Heat plus tumbling is the fastest way to permanently stretch a pair out.
Get those three right and everything else is a detail.
The hand wash, which takes about four minutes
Not five minutes of scrubbing. Four minutes of soaking while you do something else.
-
Fill a basin with cool or lukewarm water. Never hot.
-
Add a small amount of mild liquid detergent, or a wool wash, or a baby laundry liquid.
-
Swish them through for 30 to 60 seconds, then leave them to soak for 5 to 10 minutes. This is where skin oils actually come out.
-
Rinse under cool running water until it runs clear. Detergent left in the fabric can irritate skin that's already more sensitive than usual, and it doesn't do the elastic any favours either.
-
Press the water out with your hands. Don't wring. Twisting is what snaps the elastic threads running through the leg. This is the single most important line in this article.
Machine washing, for the nights you've got nothing left
Some days hand washing is not happening, and that's fine. It's better to machine wash them carefully than to wear the same pair for four days because you couldn't face the sink.
-
Use a zip-up mesh delicates bag. Stops them catching on zips, buttons and velcro.
-
Cold water, gentle or wool cycle, slow spin.
-
Mild liquid detergent, no softener.
Drying is where most pairs die
The towel roll
Lay the socks flat on a dry bath towel, roll it up with the socks inside, then press along the roll with your palms. The towel takes most of the water out in about 20 seconds without any stretching or twisting.
Then air dry
-
Flat on a rack, or hanging in the shade.
-
Away from direct sun, heaters and radiators. Blazing sun is heat, and heat is the enemy.
-
Never the dryer. Not on low, not for ten minutes.
How often to wash them
After every wear, which surprises people.
Partly that's hygiene, because they're snug against your skin all day. The other reason is practical: worn socks warm up and relax through the day, and a wash and a proper dry brings the fabric back closer to how it fits in the morning. That's why the first hour in a fresh pair feels noticeably firmer than hour nine in yesterday's.
Which means one pair isn't really enough. We'd suggest two or three pairs in rotation, so there's always a clean dry pair ready and you're never choosing between wearing damp socks and skipping them altogether.
What makes a pair worth caring for
Better fabric survives this routine better, and cheap compression socks tend to go slack no matter how carefully you treat them.
Our Maternity Compression Socks are built for daily wear through a pregnancy:
-
Listed on the Australian Register of Therapeutic Goods (ARTG 521641) as a Class I medical device, with 15 to 25 mmHg graduated pressure, strongest at the ankle and easing up the calf.
-
A bamboo, nylon and spandex blend that stays soft against skin that's often more sensitive than usual, and holds its shape well when it's washed cool and dried flat.
-
Grip soles, because hard floors and a shifting centre of gravity are not a great combination.
If you're still deciding whether they're worth it, we've written about how compression socks help with pregnancy swelling, and separately about wearing them for long flights and drives, which is where most women first try a pair.
When the socks come off
The socks are a daytime tool. They come off in the evening, and if you've been on your feet all day, that's usually when your legs let you know about it.
Two things worth having in the rotation for that hour. Our Magnesium Body Cream worked into your calves and the soles of your feet, which is the same window your socks are hanging over the rack drying. And a bit of thought about where your legs end up once you're lying down: many women find it more comfortable to keep the legs stacked and roughly parallel rather than letting the top one collapse across the bottom one, and to get a little lift under the calves. That's what the wedge piece of our Pregnancy Pillow tends to get used for by the third trimester, well away from its day job under the bump.
The four rules
Cool water, mild detergent, never wring, always air dry. Everything above is just those four rules with the reasoning attached.
Frequently Asked Questions
How long should a pair last?
With daily washing and two or three pairs in rotation, generally around three to six months of regular wear, though it depends on how often you're in them and how well they're washed. The signal to replace them is fit: if they slide down your calves or feel loose at the ankle when they're clean and dry, they're done.
Can I use wool wash on compression socks?
Yes, and it's one of the better options. Wool wash and delicates liquids clean without the harsh enzymes and additives that break elastane down.
Why do my compression socks feel tighter after washing?
Because a cool wash and a flat dry lets the fabric settle back towards its original shape after a day of body heat and movement. A freshly washed pair fitting more firmly than a worn one is normal and a sign the elastic is still in good health.
Can I wash them with the rest of my washing?
Only inside a mesh bag, on a cold gentle cycle, with no fabric softener anywhere in the load. Softener is the one that catches people out, because it affects everything in the drum.
The information in this article is general in nature and intended as comfort support only. It is not medical advice. Always consult your midwife, GP, or a qualified healthcare provider for guidance specific to your situation.
