Wet wraps for eczema: what they are and when they’re used

When a child’s eczema flares badly, with skin that’s raw, hot and itchy enough to keep everyone up at night, a doctor may suggest wet wraps. It sounds odd at first: putting damp clothes on a child with sore skin. But wet wraps are a well-established hospital technique, and many families find them a real help during a rough patch. Here’s what they are, what the evidence says, and why they’re something you do with your doctor’s plan, not on your own.

What are wet wraps?

Wet wrap therapy means covering the skin with two layers of fabric: a damp inner layer and a dry outer layer on top. The damp layer goes on over skin that has just been treated, either with a prescribed medicated cream on the flared areas, a moisturizer, or both.

The fabric can be cotton pyjamas, cotton garments made for the purpose, or tubular bandages. A step-by-step guide from the McGill University Health Centre in Montreal describes using a fitted pair of cotton pyjamas, soaked in warm water and squeezed out until damp but not dripping, with a looser dry pair over the top. UK hospital leaflets describe the same idea using two layers of medical-grade bandage.

How do they help?

The damp layer does several jobs at once. According to a patient leaflet from Newcastle Hospitals in the UK, wet wraps:

• keep moisture in the skin
• cool the skin, which eases itch
• make a prescribed steroid cream work more strongly
• put a physical barrier between fingernails and skin, which interrupts the itch-scratch cycle

The McGill guide adds that wet dressings help skin medications get into the skin and relieve itching and burning, which can help a flare heal faster.

That third point matters. A topical corticosteroid (a steroid cream or ointment, the standard anti-inflammatory treatment for eczema) is absorbed more when it’s covered. That boost is part of why wet wraps work, and it’s also the main reason they need medical guidance.

What does the research show?

The honest summary: wet wraps look helpful for severe flares in children, but the studies are small and the evidence isn’t as strong as you might expect for a technique used so widely.

• A 2006 review of the literature on children with severe or hard-to-treat eczema concluded that wet wraps are an effective short-term treatment, and that wraps over a diluted steroid cream work better than wraps over moisturizer alone. The authors also noted that no study reached a high level of evidence and that large studies were lacking.
• A 2017 systematic review and meta-analysis (a study that pools the results of several trials) found only six randomized trials comparing wet wraps with steroid creams alone, each with 19 to 51 patients. Results were inconsistent, the quality of evidence was rated low, and the authors concluded it isn’t yet proven that wet wraps beat standard steroid treatment.
• A 2014 study from a US eczema treatment program followed 72 children, average age about four and a half, whose moderate to severe eczema hadn’t responded to several treatments. With wet wraps as part of a supervised program, their average eczema severity score fell from about 50 to about 15, and the improvement held a month later. That study had no comparison group, so it can’t show how much was due to the wraps themselves.

So wet wraps aren’t a magic fix, and they aren’t a first step. They’re a tool doctors reach for when a flare is moderate to severe and regular care isn’t enough.

Why only with medical guidance?

It’s tempting to try this at home after reading about it. Here’s why it’s worth waiting for your doctor’s plan.

The cream underneath matters. Because covering the skin increases absorption, the choice of steroid, how strong it is, where it goes and for how many days are medical decisions. The 2006 review noted that the only serious side effect reported was temporary absorption of steroid into the body, and that using less cream and diluting it reduced that risk. That’s exactly the kind of adjustment your doctor makes.

Infection has to be ruled out first. Both the McGill and Newcastle guides say not to use wet wraps on infected skin. The 2017 review saw a trend toward more mild skin infections with wet wraps, although the result wasn’t statistically clear.

Protocols vary. The McGill guide describes leaving the wraps on for one to two hours and warns against sleeping overnight in wet pyjamas. The Newcastle leaflet describes wraps left on longer and adjusted over time by the doctor or specialist nurse. Neither is wrong; they’re different plans for different situations, which is why you follow the one your own care team gives you.

When should wet wraps not be used?

Based on the hospital guides, skip the wraps and call your doctor if:

• the skin looks infected: weeping, yellow crusts, pus, spreading redness or sudden painful blisters
• your child has a fever or seems unwell
• the plan would involve the face, unless your doctor specifically said so
• your child is using certain non-steroid prescription creams under the wrap that your doctor hasn’t cleared for this

Keep your child warm throughout. The McGill guide suggests a blanket or a cuddle and avoiding cold rooms, since damp fabric cools the body quickly.

What does a typical session look like?

Every plan is a bit different, but the McGill guide gives a good picture of the rhythm. Your child has a lukewarm bath, you pat the skin dry, apply the prescribed medication to flared areas, put on the damp inner layer and the dry outer layer, and keep your child warm. When the wraps come off, moisturizer goes on all over and your child gets into dry clothes.

A few practical tips: set everything up before the bath so you’re not hunting for pyjamas while your child shivers, make it a calm time with a story or a show, and keep a simple note of how the skin responds so you can report back. A fragrance-free moisturizer that your child tolerates well is part of the routine; the moisturizers page lists options whose claims have been reviewed.

When to go back to the doctor

Wet wraps are meant to calm a flare, not to become the permanent routine. Check back with your doctor if the skin isn’t clearly better within the time frame they gave you, if flares keep returning as soon as you stop, or if your child is still losing sleep. That may be a sign the day-to-day treatment plan needs adjusting. And if the skin shows any signs of infection, stop the wraps and get seen promptly.

Wet wraps combine a damp layer, a dry layer and well-moisturized or medicated skin to cool itch, lock in water and help prescribed creams work. The research supports them as a short-term tool for severe flares, even if the studies are small. Used with a clear plan from your child’s doctor, they can turn a miserable week into a manageable one.