Do Reusable Nappies Cause Nappy Rash? Facts for Parents

Quick answer

Reusable nappies do not cause nappy rash on their own. Rash usually comes from prolonged wetness, irritation, or a wash routine that leaves residue behind. Switching to cloth does not create rash, but it does ask you to change nappies often, wash thoroughly, and give skin some nappy free time. If you do those three things, cloth nappies are no more likely to irritate your baby than disposables.

Where the 'cloth causes rash' idea comes from

The myth usually starts with one bad week. A parent switches to reusable nappies, a rash appears, and cloth gets the blame. In reality, the same rash often appears with disposables when a baby is teething, starting solids, or on antibiotics. The nappy is rarely the root cause; the conditions around it are.

There is one genuine cloth-specific risk: detergent or ammonia residue left in the fabric after washing. If nappies are not rinsed properly or are overloaded in the machine, residue can sit against skin and cause irritation. That is a wash problem, not a cloth problem, and it is fixable.

Cloth nappy rash causes worth checking first

Before blaming the nappy itself, rule out the common triggers. Prolonged wetness is the biggest one, because urine and faeces break down skin over time regardless of what the nappy is made from. Teething, illness, and new foods can also change the acidity of urine and stools, which makes rash more likely for a few days.

If the rash is only where the nappy touches and nowhere else, think about fit and friction. A nappy that is too tight, or a wrap edge rubbing the same spot, can irritate skin mechanically. If the rash is widespread or has a defined edge, it may be a detergent or residue issue instead.

How washing affects cloth nappy rash

A wash routine that leaves residue is the most common cloth-specific cause of irritation. Use a detergent that rinses clean, avoid overloading the drum, and run an extra rinse if your machine is prone to trapping suds. Nappies should smell neutral when dry; a strong ammonia smell means they need a deeper wash or a strip.

Drying matters too. Nappies that stay damp for a long time can grow odour-causing bacteria. Line drying in sun or a full tumble dry cycle helps, and it also keeps the fabric absorbent. If you use a wet bag, do not leave wet nappies sealed in it for more than a day or two before washing.

Do reusable nappy liners make rash worse?

Liners are not a rash cause by themselves; they are a barrier tool. A fleece or stay-dry liner can keep wetness away from skin, which helps. A disposable liner can make cleanup easier, but if it is left in place too long it can trap moisture just like any other layer.

The key is matching the liner to the job. Use a stay-dry liner for overnight or long naps, and change it when you change the nappy. If you use a disposable liner, check it has not folded over and created a damp pocket against the skin. Liners should never replace frequent changes.

Nappy rash prevention that works with cloth

Prevention with reusable nappies is mostly about rhythm. Change as soon as you notice a wet or soiled nappy, especially in the first few weeks. For many babies that means every two to three hours during the day, and at least once overnight if they wake. If the skin looks red, change more often, not less.

Nappy free time is the most underused tool. Let your baby kick on a towel or mat for ten to fifteen minutes a few times a day. Air is the fastest way to dry skin and calm mild redness. Pair that with a gentle barrier cream at the first sign of pinkness, and most rashes never get past the mild stage.

If you use a nighttime system, choose one that keeps skin dry rather than just absorbent. A two-part system with a waterproof wrap and a natural-fibre fitted nappy can help because the wrap stops moisture wicking to clothing while the fitted layer holds liquid away from skin.

Myth vs fact: reusable nappies and rash

• Myth: cloth nappies cause nappy rash: Cloth itself is not a rash trigger. Rash comes from wetness, irritation, or residue, and those can happen with any nappy type. Verdict: false. Look at change frequency and wash routine first.
• Myth: you need to switch back to disposables to clear rash: Most mild rash clears with more frequent changes, nappy free time, and a barrier cream. Switching back does not fix the underlying cause if it is a wash or fit issue. Verdict: usually unnecessary. Fix the routine before changing systems.
• Myth: liners prevent all rash: Liners help by keeping wetness away from skin, but they do not replace frequent changes or good washing. A soaked liner left on too long can still irritate. Verdict: helpful but not a cure. Use liners with a change schedule.
• Myth: if nappies smell clean, the wash is fine: Residue and ammonia can build up even when nappies look and smell neutral at first. A strong smell when wet, or rash that returns after every wash, points to a wash issue. Verdict: check your rinse and detergent if rash keeps coming back.

Products that support a rash-friendly routine

• Reusable Nappy Nighttime Bundle: The Reusable Nappy Nighttime Bundle is a two-part system combining a waterproof wrap with a natural fibre fitted nappy, available in cotton or other fibre options and multiple sizes. A two-part system lets you separate the waterproof layer from the absorbent layer, so you can change the wet part more often and keep skin drier overnight.
• Hey Ewe Babygrow - Designed for Reusable Nappies: The Hey Ewe Babygrow is made from organic cotton with mittens on cuffs and feet, a flexible zip, and extra room cut to fit over reusable nappies. A babygrow with extra nappy room reduces friction and pressure on the nappy area, which helps if your baby is prone to rubbing or tightness around the legs.