Treating an eczema flare-up comes down to three things happening at once: calming the inflammation, repairing the skin barrier, and removing whatever triggered the flare in the first place. Most flares respond well to a combination of moisturizing, topical anti-inflammatory medication, and basic environmental adjustments. The faster you act when a flare begins, the shorter it tends to last.
Moisturize Aggressively and Often
The skin barrier is compromised during a flare, which means moisture escapes faster than normal and irritants penetrate more easily. Your first line of defense is frequent, heavy moisturizing, ideally within a few minutes of bathing while skin is still slightly damp.
Not all moisturizers work the same way. Occlusives like petroleum jelly, mineral oil, and lanolin form a thick, greasy layer that prevents water from evaporating off your skin. They don’t add moisture, but they lock in what’s already there. Humectants like glycerin, hyaluronic acid, and urea actually pull water into the skin. The most effective approach during a flare is layering both: apply a humectant-based cream first, then seal it with an occlusive like petroleum jelly on top. Ointments generally outperform lotions because lotions contain more water and evaporate quickly.
During an active flare, you may need to reapply moisturizer three or more times a day. Keep a tube at your desk, by your bed, and in your bag so you’re never caught without it.
Use the Right Topical Medication
Over-the-counter hydrocortisone (1% or 2.5%) is the mildest topical steroid available, sitting at the bottom of a seven-class potency scale. It works for very mild flares on the body, but most moderate flares need a prescription-strength option. Topical steroids are grouped from Class I (strongest) down to Class VII (weakest), and your prescriber will match the potency to both the severity and the location of the flare.
Location matters a lot. The face, eyelids, neck, and skin folds are thinner and absorb medication faster, so they typically call for lower-potency steroids or non-steroidal alternatives. Thicker skin on the hands, feet, elbows, and knees can usually handle mid- to high-potency options. Apply a thin layer to affected areas, usually once or twice daily, and stop once the flare clears to avoid thinning the skin over time.
If you’re concerned about steroid side effects or need treatment on sensitive areas, non-steroidal prescription topicals are an option. Calcineurin inhibitors like tacrolimus and pimecrolimus work by suppressing the local immune response that drives eczema inflammation. They’re safe for the face and can also be used “proactively,” applied twice daily on flare-prone areas between outbreaks to extend the time before your next one. Another option, crisaborole ointment, is approved for mild to moderate eczema in patients two years and older and works through a different anti-inflammatory pathway. The AAD’s 2025 updated guidelines also now recommend newer topical options including tapinarof cream and roflumilast cream for adults.
Bathe Strategically
Bathing can either help or worsen a flare depending on how you do it. Lukewarm water for 10 to 15 minutes hydrates the outer layer of skin, but hot water strips natural oils and intensifies itching. Pat dry gently with a towel, leaving skin slightly damp, then immediately apply your medication and moisturizer. This “soak and seal” technique is one of the most effective ways to get moisture deep into flare-affected skin.
For flares complicated by recurring skin infections, dilute bleach baths can help reduce bacteria on the skin’s surface. The standard ratio is one-quarter cup of regular household bleach in a 20-gallon tub of warm water, or a half cup for a full tub. That concentration is roughly equivalent to a chlorinated swimming pool. Limit bleach baths to once or twice a week, avoid submerging your face, and rinse off afterward if your skin feels irritated.
Wet Wrap Therapy for Severe Flares
When a flare is widespread and intense, wet wrap therapy can dramatically speed recovery. The process starts with a 15-minute lukewarm soak. After patting the skin mostly dry, you apply topical medication to affected areas (using a milder formulation on the face), followed by a generous layer of unscented moisturizer.
Then comes the wrap itself: damp clothing or wet gauze goes directly over the treated skin, and dry clothing layers on top to hold in warmth. The wet layer keeps medication and moisturizer in close contact with the skin while preventing evaporation. Wraps are typically worn for about two hours, though they can stay on overnight for severe cases. The NIAID protocol calls for soaking and rewrapping up to three times a day during the worst of a flare. This is an intensive approach, so it helps to have your dermatologist walk you through it the first time.
Identify and Remove Triggers
A flare-up is your skin reacting to something, and treating it without addressing the trigger is like mopping while the faucet’s still running. Common culprits include fragranced soaps and detergents, wool or synthetic fabrics against the skin, dust mites, pet dander, certain foods, and stress.
Environmental conditions play a measurable role. Research consistently links both extreme heat and extreme cold to increased eczema flare-ups and more clinic visits. High humidity also worsens severity for many people, likely because sweating irritates already-damaged skin. Air pollution compounds the problem further. During temperature extremes, keeping indoor air at a comfortable, stable temperature and using a humidifier in dry winter air (or air conditioning in humid summer heat) can reduce your skin’s reactivity.
If you can’t pinpoint your triggers, keeping a simple diary of flares alongside what you ate, wore, used on your skin, and the weather can reveal patterns within a few weeks.
Know When a Flare Is Infected
Broken, scratched eczema skin is vulnerable to bacterial infection, most commonly from staph bacteria that naturally live on the skin. An infected flare looks and feels different from a regular one, and it won’t resolve with moisturizer and steroids alone.
Watch for these signs on or around an eczema patch:
- Yellow, crusty texture on the skin’s surface, sometimes described as honey-colored
- Fluid-filled blisters that break easily and ooze clear or yellowish liquid
- Bumps or sores that weep or produce pus
- Increased pain, warmth, or swelling beyond your typical flare
An infected flare usually needs a course of antibiotics, either topical or oral depending on how widespread it is. If your flare suddenly changes character or stops responding to your usual treatment, that’s worth a prompt call to your doctor.
Options When Topical Treatments Aren’t Enough
Some people experience severe, persistent flares that don’t respond to even strong topical therapy. Severe eczema looks like widespread dry skin with constant itching, significant redness, cracking, bleeding, or oozing, and it often disrupts sleep and daily functioning. When topical treatments have genuinely been tried and failed, systemic medications that work throughout the body become an option.
Biologic injections like dupilumab target specific immune signals that drive eczema inflammation. Tralokinumab is approved for patients 12 and older with moderate to severe disease that hasn’t responded to topical prescriptions, and it serves as an alternative for those who don’t improve on or can’t tolerate dupilumab. The 2025 AAD guideline update added two more biologics, lebrikizumab and nemolizumab (used alongside topical therapy), as strongly recommended options for adults.
These treatments represent a significant step up in both effectiveness and commitment. They require regular injections and ongoing monitoring. But for people whose flares are constant and debilitating, they can be genuinely life-changing, reducing flare frequency and severity by a large margin.