The short version
NHS and dermatology guidance for nappy rash: change promptly, pat dry with nappy-free time, and a zinc-oxide barrier cream at every change. Ours cleared in three days on that routine with a 15% zinc-oxide cream; see a doctor if it worsens, blisters or comes with fever.
What happened
It started with solids. The week we introduced dal, his nappies changed, and two days later his bottom was red from front to back, the kind of red that makes you wince when you open the nappy. He screamed at every change. I tried the cream I had, which was thin and smelled of lavender, and it did nothing.
A British mum in our building, whose son is a year older, came down with a grey tub with a yellow lid and said, "thick layer, every change, don't rub it in." I'd never heard of it. It was zinc oxide, 15%, in a greasy base that sat on the skin like a coat of paint. That's the point: it's a barrier, not a moisturiser.
We changed three things at once. Nappies every two hours during the day whether he'd gone or not, because wet alone is enough. Pat dry, then two minutes of bare bottom on a muslin before the new nappy. Then the thick white layer. By the third morning the red was pink; by the fifth it was gone.
The paediatrician later confirmed all three were right and added one thing: if it has blisters, pus, or doesn't improve in a week, it's probably fungal or bacterial and needs a prescription, not a thicker layer of cream. We've needed that once in three years.
The yellow tube lives in the bag now. I've since tried two others that do the same job, and I'll list them. But the lesson wasn't the brand. It was: barrier, every change, every time, and the rash mostly never comes.
The NHS and AAD both advise: change wet or dirty nappies as soon as possible, pat dry, apply a thin layer of a zinc-oxide barrier cream at every change, give nappy-free time, avoid talc, and see a doctor if it doesn't clear, worsens or the baby has a fever. Nationwide Children's recommends changes every two hours during the day.
NHS, Nappy rash. Source · AAD, How to treat diaper rash. SourceA 2025 systematic review of 13 studies (2,935 children) found regular barrier creams crucial in reducing the incidence and severity of nappy rash, with zinc oxide highly effective and minimal side effects. In a study published in the Indian Journal of Pediatrics, 67% of 113 infants had nappy rash; using a barrier cream preventively was strongly protective (odds ratio 0.20), and starting solids raised the risk about six-fold.
Octarica SG et al., Acta Dermatovenerol APA 2025;34(3):101 · Kayaoglu S et al., Indian J Pediatr 2015. SourceThe verdicts
Sudocrem Antiseptic Healing Cream, 60 g or 125 g
The yellow lid. Thick zinc-oxide barrier that fixed a bad rash in three days and has kept them away since. Buy the 125 g; it lasts a year.
Cetaphil Baby Diaper Cream
Zinc oxide base, smoother than Sudocrem, easier to wipe off. A good alternative if you prefer less grease.
Sebamed Baby Diaper Rash Cream
Panthenol and zinc, pleasant to use, widely stocked in Indian pharmacies. Works well as the everyday preventive layer.
The thin scented cream I would rethink
The one I had was a light moisturiser with fragrance, and it didn't act as a barrier for us. A zinc-oxide cream did. Your experience may differ.
Product details are as we used them; the version on sale now may differ. Check the exact model and the manufacturer's instructions.