Compare nappy rash creams by ingredient — zinc oxide, panthenol and petrolatum barriers — plus how to prevent rash and spot when it's thrush.

Nappy rash (technically irritant nappy dermatitis) is one of the most common skin problems in babies — most will get it at least once, and it peaks between about 9 and 12 months of age. It shows up as red, sometimes shiny or spotty skin over the areas a nappy covers: the bottom, genitals, and the tops of the thighs. In simple irritant rash the deep skin creases are often spared, because that is where wee and poo make the least contact.
The main driver is prolonged contact with moisture. A wet or soiled nappy leaves skin damp, which weakens its protective barrier and makes it vulnerable to friction from the nappy rubbing. Enzymes in poo and ammonia produced as urine breaks down then irritate that softened skin further. This is why rash flares during teething, diarrhoea, or any stretch where nappies stay wet longer than usual. Understanding the cause explains the fix: keep the skin dry and shielded, and it usually settles.
Almost every 'nappy rash cream' sold in Australian pharmacies is a barrier cream. Rather than actively treating the skin, it lays down a water-repellent film that stops moisture and irritants reaching the skin so it can recover naturally. The differences between products come down to which barrier ingredient they use and what else is blended in. Here are the three families you will see most often.
Zinc oxide is the most common nappy rash ingredient in Australia — it is the base of Desitin, Amolin, Sudocrem and many pharmacy own-brands. It forms a thick, opaque barrier that repels moisture and has a mild soothing, astringent effect on inflamed skin. Products range from lighter creams to heavy pastes; higher zinc oxide concentrations (some ointments contain around 40%) give a stronger barrier that is useful for more irritated skin. Some zinc-based creams, such as Sudocrem, also add mild antiseptic ingredients like benzyl alcohol to help keep the area clean.
Dexpanthenol, also called provitamin B5, is the active ingredient in Bepanthen Nappy Rash Ointment, typically at 5% in a soft-paraffin and lanolin base. It is marketed as a lighter, more breathable barrier that is easy to wipe on and off. The panthenol is intended to support the skin's own recovery while the ointment base provides the moisture barrier. Bepanthen is fragrance-free and colourant-free, which some parents prefer for very sensitive skin. It is one of the most widely used nappy products in Australia.
Plain petrolatum — soft white paraffin, the basis of products like Vaseline and many simple ointments — is one of the most effective and cheapest barriers available. It is occlusive, meaning it seals in the skin's own moisture and blocks out wetness, and it contains no fragrance or active ingredients that could irritate. It does not soothe or add anything beyond the barrier itself, but for straightforward prevention it is hard to beat on value. A thin smear at each change can help keep at-risk skin protected.
This table summarises the main cream types you will find, how they work, and where each fits. Prices vary between pharmacies — check your preferred retailer for current pricing.
| Cream type | Key ingredient | How it works | Best for |
|---|---|---|---|
Zinc oxide cream / paste | Zinc oxide (often 10–40%) | Thick moisture barrier with a mild soothing, astringent effect | Everyday rash and more irritated skin |
Dexpanthenol ointment | Dexpanthenol / provitamin B5 (~5%) | Breathable barrier that supports the skin's own recovery | Sensitive skin; easy everyday use |
Petrolatum ointment | Soft white paraffin | Simple occlusive barrier, no fragrance or actives | Budget prevention and very sensitive skin |
Combination soothing cream | Zinc oxide plus mild antiseptic | Barrier plus light antiseptic to keep the area clean | Rash where you want extra cleansing |
Antifungal cream | Clotrimazole or miconazole | Treats candida (thrush) rather than acting as a barrier | Suspected thrush — use on pharmacist/GP advice |
Barrier creams work best when applied generously. Smooth a thick layer over the whole nappy area at every change — think of it like icing a cake rather than rubbing in a moisturiser. You do not need to scrub off the previous layer each time; wiping too vigorously can irritate sore skin. Just clean gently, pat dry, and reapply. For an established rash, applying at every single change (day and night) gives the skin the most protected time to recover.
If a rash is not improving after a few days of good barrier-cream care, it may be a thrush (candida) infection rather than simple irritation. Candida is a yeast that thrives in warm, moist areas, so it often takes hold when skin has been damp and inflamed. The tell-tale signs are a rash that is bright or beefy red, well-defined at the edges, and worst in the skin folds — the opposite of irritant rash, which tends to spare the creases. You will often see small separate spots, called satellite lesions, scattered just beyond the main patch.
Thrush nappy rash does not clear with a plain barrier cream alone; it needs an antifungal such as clotrimazole or miconazole, which are available from pharmacies. Because it is easy to mistake for stubborn irritant rash, it is worth asking your pharmacist or GP to confirm before treating. They can also advise on using a barrier cream over the top to keep the area protected while the antifungal works.
There is no single 'best' cream, because most nappy rash creams are barrier creams that work the same basic way — by shielding the skin from moisture. Well-known options include zinc oxide products (Desitin, Amolin, Sudocrem), dexpanthenol ointment (Bepanthen) and plain petrolatum. The most important factor is not the brand but how you use it: apply a thick layer at every nappy change and change nappies often. Choose a fragrance-free formula for sensitive skin, and ask your pharmacist if you want a recommendation for your baby's situation.
For a severe or very raw rash, a heavier zinc oxide paste (some contain around 40% zinc oxide) gives a stronger, longer-lasting barrier than a light cream. Apply it thickly at every change and combine it with frequent changes and nappy-free air time. If the skin is broken, blistered or weeping, or it is not improving within a few days, see your pharmacist or GP — severe rash sometimes needs an antifungal for thrush or a short course of weak hydrocortisone, which should only be used on professional advice.
They are different types of barrier cream rather than one being clearly better. Sudocrem is a zinc oxide cream that also contains mild antiseptic ingredients, giving a thicker barrier with a light cleansing effect that some parents prefer for more irritated skin. Bepanthen is a dexpanthenol (provitamin B5) ointment marketed as a lighter, breathable barrier that is easy to wipe on and off, and it is fragrance-free. Both can help relieve and protect against nappy rash. Many parents simply keep whichever suits their baby's skin — trying one and switching if it does not agree is reasonable.
The fastest approach is to remove the cause and protect the skin: change nappies as soon as they are wet or soiled, clean gently with water, let the skin air-dry with nappy-free time, and apply a thick barrier cream at every change. Most simple irritant rash improves noticeably within a couple of days with this routine. There is no cream that clears rash instantly — the skin needs time to recover — but keeping it dry and shielded gives it the best chance. If it is not settling in a few days, have it checked in case it is thrush.
Suspect thrush if the rash is bright or beefy red, worst in the skin folds, and has small separate spots (satellite lesions) scattered around the edges — and if it is not improving with a plain barrier cream after a few days. Irritant rash, by contrast, usually spares the deep creases. Thrush needs an antifungal cream such as clotrimazole or miconazole rather than a barrier cream alone. Because the two can look similar, ask your pharmacist or GP to confirm before treating.
Yes. Applying a thin layer of barrier cream at each change is a reasonable way to help protect skin that is prone to rash, particularly overnight or during teething and tummy upsets when nappies stay wet longer. For everyday prevention a light smear of a simple barrier such as petrolatum or a zinc cream is enough; save the thick layers for when a rash is actually present. The other pillars of prevention — frequent changes, gentle cleaning and air time — matter just as much as the cream.
This information is general in nature and isn’t a substitute for professional medical advice. Always read the label and follow the directions for use. Talk to your pharmacist or doctor about what’s right for you.
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