Nappy Rash: Causes, Treatment & Prevention

Most babies get nappy rash at some point. Here is what causes it, how to treat it at home, when to see a GP, and how the right wipes and routine help prevent it.

Nappy rash is one of the most common things parents deal with in the first two years. Most babies will have it at least once, and in the vast majority of cases it clears up within a few days with simple care at home. This guide explains what causes it, what to do about it, when to see a GP, and the everyday habits that keep it from coming back.

This article is general information, not medical advice. If you are worried about your baby's skin, speak to your health visitor, pharmacist or GP.

What Does Nappy Rash Look Like?

Red, sore-looking patches on the bottom, genitals or the folds of the thighs. The skin may feel warm, look shiny or slightly swollen, and your baby may be unsettled during changes. Mild nappy rash is pink or light red; more severe rash can be bright red with spots, blisters or broken skin.

What Causes Nappy Rash?

Moisture and friction: the main cause. Wee and poo sitting against the skin, plus the nappy rubbing, break down the skin's natural barrier.
Nappies left on too long: especially overnight or during teething and illness when babies poo more.
Diarrhoea: looser, more acidic stools irritate the skin quickly.
Thrush (candida): a yeast infection that thrives in warm, damp folds. Often looks bright red with small satellite spots around the edge.
Reaction to products: some babies react to fragranced wipes, soaps, bubble bath or washing detergent on reusable nappies.
Antibiotics: taken by the baby or by a breastfeeding parent, can disturb the skin's natural balance.

How to Treat Nappy Rash at Home

Change nappies more often. Every two to three hours while awake, and as soon as possible after a poo.
Clean gently. Use water and cotton wool, or fragrance-free, alcohol-free baby wipes. Dab rather than rub.
Dry properly. Pat dry with a soft towel or let the skin air for a few minutes. Damp skin under a nappy is what keeps rash going.
Apply a thin barrier cream. A zinc-based or petroleum-based nappy cream at every change creates a layer between skin and moisture. Thin is better than thick.
Give nappy-free time. Ten to fifteen minutes on a towel a few times a day lets the skin breathe and heal faster than anything else.
Avoid tight nappies and plastic pants. A little room for air helps.

With this routine most mild rash improves within two to three days.

When to See a Pharmacist, Health Visitor or GP

The rash has not improved after three days of home care
Bright red skin with small spots around the edge (possible thrush, which needs an antifungal cream)
Blisters, pus, crusting or bleeding
Your baby has a temperature or seems unwell
The rash spreads beyond the nappy area

Pharmacists can advise on over-the-counter barrier and antifungal creams. If in doubt, your GP or health visitor is the right call.

How to Prevent Nappy Rash

Build a simple change routine

Clean, dry, thin layer of cream, fresh nappy. The same four steps every time, and it becomes automatic.

Choose gentle wipes

Wipes do not cause nappy rash by themselves, but harsh ones can make irritated skin worse. Look for:

Alcohol-free and, during a flare-up, fragrance-free
A soft, thick sheet that cleans in one or two passes so you are not rubbing
Enough moisture to clean without leaving the skin soaking wet

Deep Fresh Extra Soft baby wipes and Lovely Baby wipes are alcohol-free with a thick, cushioned sheet, and because they come in cases of 24 packs you are never caught short mid-change. For babies prone to reactions, our sensitive baby wipes guide covers the gentlest options, and if you are weighing up cost, read WaterWipes alternatives compared.

Watch the triggers

Teething, new foods, illness and antibiotics all make rash more likely. During those weeks, change more often and use barrier cream at every change, before the rash appears.

Check your laundry

If you use reusable nappies, rinse thoroughly and avoid fabric conditioner, which can leave a residue that irritates skin.

Frequently Asked Questions

Should I stop using wipes if my baby has nappy rash?
Not necessarily. Switch to the gentlest fragrance-free wipe you have, or to water and cotton wool, until the skin heals, then reintroduce your usual wipes gradually.

Can nappy rash be caused by the nappy brand?
Occasionally. If the rash follows the exact outline of the nappy or appears after changing brands, try a different one.

How long does nappy rash last?
Mild rash usually clears in two to three days with frequent changes, drying and barrier cream. If it lasts longer, get it checked.

Is nappy rash a sign of poor hygiene?
No. It happens to well-cared-for babies all the time. It is simply what skin does when it stays damp under a nappy.