Yes. Muslin is one of the safest fabrics for a newborn — an open cotton weave that breathes, so it lowers the risk of overheating, and softens with every wash. What makes a muslin swaddle safe or unsafe is the dye and how it's used: choose azo-free dyes, wash it before first use, and wrap it loosely at the hips.
What is muslin, and is mulmul the same thing?
Muslin is a plain-weave cotton with a deliberately open structure — threads spaced rather than packed, which is why light comes through it. Mulmul is the Indian name for the same cloth. It's the weave, not the grade.
A single layer runs 50–80 GSM, against 100–140 for regular 200TC bedsheet cotton. That gap is the whole point in an Indian summer. The loosely set yarn keeps relaxing in the wash, which is why an old muslin feels better than a new one.
Muslin vs cotton vs flannel vs synthetic — what's best for a newborn?
| Fabric | Against the skin | Best for | Watch out for |
|---|---|---|---|
| Muslin / mulmul | Open weave, breathable, softens with washing | Swaddling, summer, humid cities | One layer isn't warm in a Delhi January |
| Woven cotton (200TC) | Smooth, closer weave, holds shape | Sheets and quilt covers | Less airflow; slower to dry |
| Flannel / brushed cotton | Warm, slightly napped | The coldest weeks up north | Too warm for most of India |
| Polyester and blends | Doesn't absorb sweat, holds heat | Almost nothing, for a newborn | Sweat sits on skin; heat rash |
For an Indian newborn, breathability beats softness — softness arrives on its own after a few washes and breathability never does.
What makes a muslin swaddle safe — or unsafe
The weave isn't the risk. The colour is.
A subset of azo dyes break down into aromatic amines classed as hazardous. India prohibited 42 benzidine-based dyes in 1993 and 70 more azo dyes in 1997, under the Environment (Protection) Act, 1986. Azo-free means the seller has stayed clear of that list.
Four checks:
- The dye. Azo-free, stated plainly. A seller who knows answers in one line.
- The fibre. Pure cotton, not a blend. Blends are cheaper and less breathable.
- The size. About a metre square — ours are 100×100 cm. A small swaddle is a nursing cover at best.
- The finish. No stiffness, no smell out of the packet. Both wash out, and both tell you something.
How to swaddle a newborn without hurting the hips
The International Hip Dysplasia Institute is clear: the legs need to bend up and out at the hips inside the wrap. Straight legs pressed together is the position that loosens the joint.
- Lay the cloth as a diamond, fold the top corner down, and place the baby with shoulders just below the fold.
- Bring one side across the chest, tuck it under the opposite side.
- Fold the bottom up loosely — knees and hips must still move.
- Bring the last side across and tuck it in.
- Slide two fingers between cloth and chest. If they don't fit, it's too tight.
Snug at the arms, roomy at the legs. That's the shape.
When should you stop swaddling?
At the first sign the baby is trying to roll, often between two and four months. A swaddled baby who rolls onto their front can't push back. American Academy of Pediatrics guidance is the first sign, not the first successful roll.
The cloth doesn't go to waste. A muslin that stops being a swaddle becomes a pram cover, a feeding cloth, and eventually the thing a three-year-old refuses to sleep without.
How warm is too warm?
Overheating is easy to get wrong in a house where the AC runs in one room and not the next. Lullaby Trust guidance puts the baby's room at 16–20°C. Dress the baby for the room they're actually in, then check with a hand on the back of the neck. Warm is right. Sweaty is too much. Cool hands and feet are normal.
The free advice: hold it up to the light, then wash it
Two things that cost nothing, whoever you buy from.
Hold the cloth up to a light. The weave should look even and open all the way across. Patchy density means uneven yarn, and that cloth will pill and thin within a year.
Wash it before it touches the baby. Cold water, mild detergent, no softener, dry in shade.
That first wash is why a gifted swaddle sometimes sits unused for a month. If you're giving one, say so on the tag. A small kindness, in a month when a family is handed a hundred contradictory instructions.
Questions we get asked
Is muslin safe for a newborn's skin?
Yes. Muslin is a breathable, plain-weave cotton that helps prevent overheating and gets softer with each wash. Choose pure cotton coloured with azo-free dyes, and wash it once before first use.
Is mulmul the same as muslin?
Yes. Mulmul (also malmal) is the Indian name for the same open-weave cotton, usually at the finer end. It describes the weave, not the grade, so still check fibre content and dye.
What size should a baby swaddle be?
About a metre square. Ours are 100×100 cm, and anything much smaller stops working as a wrap within a couple of months, though it stays useful as a nursing or pram cover.
When should you stop swaddling a baby?
At the first sign the baby is trying to roll, often between two and four months. A swaddled baby who rolls onto their front can't push back up, which is why the guidance says to stop early rather than late.
Can a swaddle or quilt go in the cot with a newborn?
No loose bedding belongs in the cot in the first year — no quilts, pillows or bumpers. A swaddle is worn rather than laid over the baby.
Does muslin keep a baby warm enough in winter?
One layer won't, in a north Indian winter. Muslin layers well, so use two, or move to a three-layer cotton dohar outside the cot.