Organic cotton is the easiest fabric in the house to look after, and the easiest one to ruin.
There is no special detergent to buy and no hand-washing involved. But a hot wash, a hot dryer and a bottle of fabric softener will, between them, take a beautiful babygrow and turn it into something stiff, shrunken and half a size smaller than it was when it arrived.
So here is how to wash organic cotton baby clothes properly — the temperatures, the detergent, the drying, and the specific baby stains that need a specific answer — so they keep their shape, keep their softness, and are still good enough to hand on to the next child.
Before the first wear
Wash everything before it goes near your baby, including gifts still in their packaging. New clothing picks up dust and handling on its way to you, and a first wash lifts all of it.
That first wash is also when almost all of a garment's shrinkage happens. Cotton fibres are stretched during spinning and knitting, and their first proper contact with water lets them relax back. Wash at 30°C and it is a small, one-off settling. Wash hot and you get the lot at once, and it does not come back.
Wash new colours separately for the first two or three washes. Even the low-impact dyes approved under GOTS certification can release a little excess colour at the start.
The everyday wash
Five things, and then you can stop thinking about it.
- Wash at 30°C
- Warm enough for baby clothes, cool enough that the fibres stay where they are. Modern detergents are built to work at low temperatures, and a 30°C cycle uses appreciably less energy than a 40.
- Use a gentle or cotton cycle
- Avoid long, high-agitation programmes. Friction is what causes pilling — those little bobbles on cuffs and knees — and a shorter, gentler cycle produces noticeably less of it.
- Choose a mild, non-biological detergent
- Non-bio leaves out the enzymes that break down protein stains, and those enzymes are a common culprit in irritation for babies with sensitive skin. Use about half what the bottle suggests: baby clothes are small and lightly soiled, and excess detergent does not rinse out cleanly.
- Add an extra rinse
- The single most useful setting on the machine for baby clothing. Detergent residue left sitting in the fabric is a far more frequent cause of irritation than the fabric itself.
- Turn prints inside out
- Printed graphics last roughly twice as long when they are not rubbing against the drum for the whole cycle.
And do not overfill the machine. Clothes need room to move for water and detergent to reach them, and a packed drum both cleans badly and creases everything in it.
Fabric softener: don't
This is the one habit worth breaking.
Fabric softener works by depositing a thin, waxy coating on the fibres. That coating makes fabric feel slippery, but on cotton it reduces absorbency — so a softener-washed muslin, bib or towel stops doing its actual job — and it builds up over repeated washes until the fabric feels heavy and looks dull. It also commonly carries fragrance and preservatives, neither of which is a great idea next to a baby's skin.
Organic cotton does not need it. It is soft because of the fibre and the knit, and it gets softer with washing on its own.
If your water is hard and clothes feel stiff line-dried, add half a cup of white vinegar to the rinse compartment instead. It softens, cuts residue, and rinses away without leaving a smell.
Drying, and why it matters for fit
Air-drying is better for the fabric and better for the shape.
- Line dry in the shade, or on an airer indoors. Strong direct sunlight fades colours over time — though a short spell of sun is the most effective stain treatment there is for anything yellowish, so it has its uses.
- Reshape while damp. Give each piece a gentle tug back into shape and smooth the seams before hanging. Thirty seconds now saves ironing later.
- Hang by the hem or over the line, never by the shoulders. Pegging a wet top by its shoulders drags the neckline out of shape as it dries.
If you must tumble dry — and with a baby in the house, sometimes you must — use the lowest heat setting and take everything out slightly damp, then let it finish on an airer. Heat is what shrinks cotton, and what makes the elastane in waistbands and cuffs go slack.
Stain removal for the stains you'll actually get
Baby stains are a specific and fairly short list. Each one has a right answer.
| Stain | What to do |
|---|---|
| Milk, formula, posset | A protein stain. Rinse in cold water immediately — hot water cooks the protein into the fibre and sets it permanently. Then soak in cool water with a little detergent before washing as usual. |
| Nappy leaks | Rinse thoroughly in cold water first, then wash. For stubborn yellowing, sunlight is remarkably effective: dry the damp garment outside and watch the mark fade. |
| Fruit and vegetable purée | Scrape off the solids, then rinse the back of the stain under cold running water to push it out rather than through. Berry stains respond well to a cool soak first. |
| Grass and mud | Let mud dry completely and brush it off before it goes anywhere near water — wet mud spreads. Grass responds to a little detergent worked in and left for fifteen minutes. |
| Pen, paint, nursery crafts | Blot rather than rub, treat from the back of the fabric, and keep it out of the dryer until the mark has fully gone. |
Two rules across all of them: cold water first, always — and never tumble dry a stain you have not completely removed. Heat sets whatever you missed.
Keeping them good enough to pass on
Clothes that survive one child and go on to a second are the whole point of buying well in the first place.
- Repair small things early. A loose popper or a split seam takes minutes now and is a lost garment in a fortnight.
- Store clean, dry and folded rather than hung, in a breathable cotton bag or box rather than sealed plastic — cotton needs to breathe, and anything stored slightly damp will mildew.
- Deal with stains before storing. A faint mark you can barely see in September will have oxidised into an obvious brown one by the time you open the box next spring.
Read next
Finished with them altogether? Send them back through SuperLooper and they go on to another child — and you get a voucher towards your next order. If you are working out what size to buy next, our baby clothes size guide covers when to size up.
Common questions
What temperature should I wash organic cotton baby clothes at?
30°C for everyday washing. It is warm enough for normal soiling, gentle on the fibres, and cheaper to run. Save 60°C for the rare occasion something genuinely needs sanitising, and accept that it will shrink a little if you do.
Do I need a special detergent for baby clothes?
Not a "baby" branded one, no. What matters is that it is mild, non-biological and fragrance-free, that you use less than the bottle recommends, and that you rinse thoroughly. A good non-bio liquid does everything a baby-specific detergent does, usually for less.
Does organic cotton shrink?
A little, mostly in the first wash, and much less if you wash at 30°C and skip the tumble dryer. Reshaping while damp recovers most of what does move.
How do I stop baby clothes going bobbly?
Pilling comes from friction. Wash inside out on a gentle cycle, do not overload the drum, and avoid washing cotton alongside towels, zips or anything rough. A fabric shaver takes off any bobbles that do appear without damaging the knit.
Can I use bleach or stain remover on organic cotton?
Avoid chlorine bleach entirely — it weakens cotton fibres and yellows them over time. An oxygen-based stain remover is fine used sparingly, but for most baby stains, cold water, a soak and a spell in the sun do the job without any of it.
How often should I wash baby clothes?
Whenever they are visibly soiled, which with a small baby is most days. Sleepsuits and vests worn against the skin get washed after each wear; outer layers like cardigans and joggers can go several wears between washes, which is better for them.
Every Lucy & Sam piece is made from 100% GOTS certified organic cotton, in one cut per size, from 0–3 months to 5–6 years — built to be washed often and handed down after.
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