How to Wash Baby Clothes
Pre-wash everything before first use. Non-bio detergent, half-dose, 30–40°C, extra rinse. No fabric softener on bibs or muslins.
Why Pre-Wash Before First Use
New baby clothes and bedding are treated with chemicals during manufacturing — sizing agents (starches), fire retardants on nightwear, optical brighteners, and residues from fabric processing. These can cause skin irritation, especially on a newborn's skin which is 20–30% thinner than adult skin and far more permeable. Pre-washing removes these residues. This applies to everything that will touch a newborn: clothing, bedding, muslins, bibs, blankets, towels, and any soft toys that will be used immediately.
Non-Bio vs Biological Detergent
The non-bio vs. bio debate: non-biological detergents contain no enzymes (protease, lipase, amylase) and have a simpler formulation that is less likely to cause skin irritation. However, research evidence for non-bio being universally better for sensitive skin is limited — many biological detergents are also perfectly safe. The practical guidance: for newborns (0–3 months), non-bio is the conservative choice. After 3 months, if your baby shows no skin reaction, biological (enzyme) detergent at 40°C is effective and fine. If your baby has eczema or a known skin sensitivity, non-bio is worth maintaining. Always use half the dose that the packet recommends for baby items — residual detergent in fabric causes more irritation than under-washing.
Step by Step
Pre-wash all new items before first use
Wash all new clothing, bedding, and soft toys before the baby wears or uses them. New garments carry manufacturing residues, dust, and handling contamination from packaging and shop handling. One wash at 30–40°C with a half-dose of non-bio liquid detergent is sufficient.
Use liquid detergent, not powder
Powder detergent can leave residue in fabric, especially at lower temperatures. Liquid detergent dissolves more completely and is less likely to leave skin-irritating granules. Half-dose is usually enough for lightly soiled baby items.
Wash at 30–40°C for everyday items
30–40°C is sufficient for daily cleaning of baby clothes. Higher temperatures (60°C) are not necessary for routine washing — they cause premature fabric wear, shrinkage, and colour fading. Reserve 60°C for items that have been in contact with infection (gastroenteritis, conjunctivitis) or significant illness.
Wash nappies (cloth) and heavily soiled items separately
Reusable nappies and heavily soiled items (poo-stained bibs, sick-covered vests) should be washed separately from lightly soiled clothing. Cloth nappies may need a hot wash cycle (60°C) to sanitise — check the manufacturer's instructions.
Extra rinse cycle
An extra rinse cycle removes more detergent residue from the fabric. If your baby has sensitive skin or eczema, an extra rinse is worth the water and time. This is more effective than switching to a more expensive detergent.
Air dry where possible
Air drying in daylight is gentle on fabrics and UV exposure provides mild sanitisation. If tumble drying, use a low heat setting to avoid shrinkage and damage to elastics in sleepsuits and nappy covers.
Temperature Guide
Pre-washing new items, lightly soiled clothing, woollen or knitted baby items, delicate fabrics.
Standard everyday washing of baby clothes and bedding. Most effective temperature for non-bio detergent.
Illness recovery (gastroenteritis, conjunctivitis). Reusable cloth nappies. Items with significant infection risk. Not for routine laundry.
Almost never needed for baby items. Only for 100% cotton white nappies or bedding — check labels first.
Common Baby Stains
Milk (breast milk or formula)
Cold water immediately — hot water sets protein. Cold rinse, then enzyme detergent soak 30 min (check age guidance above), then 40°C wash. Dried milk: cold water soak to rehydrate first.
Baby food and purees
Scrape off solid. Cold rinse. Non-bio detergent soak for fruit/veg-based purees. Enzyme detergent for meat or egg-based purees (after 3 months). 40°C wash.
Poo (mustard yellow — breastfed; darker — formula/solids)
Rinse solids under cold water. Cold soak in enzyme-free detergent or very dilute non-bio solution 30 min. Sunlight: breastfed poo (yellow, bilirubin stains) bleaches naturally in direct sunlight — one of the most effective treatments. 40°C machine wash.
Sick/vomit
Remove solids. Cold rinse (hot water sets milk protein). Non-bio detergent soak 30 min. 40°C wash. For undigested milk: cold soak important, as the milk protein is still intact.
Bilirubin (yellow newborn poo — breastfed)
This is the most persistent and most easily solved baby stain. After rinsing and washing normally, hang the damp item in direct sunlight for 1–2 hours. UV light bleaches the bilirubin pigment naturally without any chemical treatment.
Grass, mud, food (older babies)
Standard stain removal applies once the baby is past newborn stage. Enzyme detergent is fine after 3 months if no skin reaction. See the relevant stain guide for grass, mud, or food.
What to Avoid
Fabric softener on bibs, muslins, and towels
Fabric softener coats fibres with a film that reduces absorbency. Bibs and muslins need to be absorbent to function. It also leaves a residue that can irritate sensitive skin.
Full-dose detergent
Baby items are rarely heavily soiled and a half-dose is sufficient. Excess detergent left in fabric after rinsing is a more common cause of skin irritation than the detergent type itself.
Biological detergent on newborns (0–3 months) if skin is reactive
Enzyme residues can cause irritation on newborn skin in some babies. Non-bio is the cautious starting point. After 3 months, or if no reaction occurs, biological detergent is fine for most babies.
60°C for routine washing
High temperatures damage elastics (waistbands, sleepsuit feet), cause shrinkage, and fade colours rapidly. 40°C is sufficient for everyday cleaning.
Scented detergents and fabric fresheners
Fragrance is among the most common contact allergens. Use fragrance-free or low-fragrance detergents on baby items. Avoid perfumed fabric freshener sprays.
Mixing baby and adult laundry for newborns
Adult clothes carry traces of fragrances, personal care products, and heavier detergent loads. For the first few weeks, washing newborn items separately prevents cross-contamination.
FAQ
Do you need to wash baby clothes before using them for the first time?
Yes. New baby clothes are treated with manufacturing chemicals (sizing agents, optical brighteners, processing residues) that can irritate a newborn's skin. Wash everything before first use — clothing, bedding, muslins, bibs, and soft toys. One wash at 30–40°C with a half-dose of non-biological detergent is sufficient.
Should I use biological or non-biological detergent for baby clothes?
For newborns (0–3 months), non-biological (enzyme-free) detergent is the conservative choice as enzyme residues can irritate some babies' skin. After 3 months, biological detergent is fine for most babies. If your baby has eczema or sensitive skin, continue with non-bio. The most important factors are: use half the recommended dose, use a liquid rather than powder, and add an extra rinse cycle.
What temperature should baby clothes be washed at?
30–40°C for everyday washing. 30°C for delicates, new items, and woolens. 40°C for standard washing with non-bio or bio detergent. 60°C is only necessary if the baby has been ill (gastroenteritis, conjunctivitis) or for reusable cloth nappies. High temperatures are not needed for routine baby laundry and cause premature fabric wear.
How do you remove yellow newborn poo stains?
Breastfed newborn poo is yellow because it contains bilirubin. After rinsing and washing normally, hang the still-damp item in direct sunlight. UV light bleaches bilirubin stains naturally — usually 1–2 hours of direct sun is sufficient. This is one of the few cases where sunlight is genuinely the best treatment, not a folk remedy. If sunlight is not available, oxygen bleach soak works on white or pale items.
Related guides
Got a specific stain?
Use the stain picker →