Calming an eczema flare comes down to three things: reducing inflammation quickly, repairing the skin barrier, and removing whatever triggered the flare in the first place. Most flares respond well to a combination of moisturizing, topical medication, and simple habit changes, though severe or recurring flares sometimes need stronger medical treatment.
Moisturize Strategically, Not Just Often
Moisturizers are the foundation of eczema management, but not all moisturizers work the same way. The ingredients fall into three categories, and understanding the difference helps you pick the right product. Emollients (like ceramides and fatty acids) soften skin by filling gaps between skin cells and improving barrier function. Occlusives (like petroleum jelly) create a physical seal on the skin’s surface to lock in moisture. Humectants (like glycerin and hyaluronic acid) pull water into the outer layer of skin. A good eczema moisturizer typically combines all three.
Petroleum jelly is one of the most effective occlusives available, and it’s inexpensive. Thick creams and ointments outperform lotions because lotions contain more water and evaporate faster. Apply moisturizer within a few minutes of bathing while skin is still slightly damp. This traps water in the skin rather than letting it evaporate. During a flare, you may need to reapply two or three times a day.
Topical Steroids for Active Flares
When moisturizer alone isn’t enough, topical corticosteroids are the standard treatment for bringing a flare under control. These come in seven potency classes, from super-high (Class I) down to low (Classes VI and VII). Your doctor matches the strength to the severity and location of your flare.
Super-high-potency steroids should be used for no more than three weeks at a time. High- and medium-potency steroids are generally safe for up to 12 weeks. Low-potency steroids have no specified time limit. Sensitive areas like the face, groin, and skin folds call for weaker formulations, used in one- to two-week intervals. Once the flare clears, treatment can be tapered or stopped.
If you’re concerned about long-term steroid use, non-steroidal prescription options exist. Calcineurin inhibitors (tacrolimus and pimecrolimus) suppress the local immune response without thinning skin. A newer option, crisaborole, works by blocking a specific enzyme involved in the inflammatory pathway that drives eczema. These are particularly useful for the face and other areas where steroids carry more risk of side effects.
Identify and Remove Your Triggers
Flares rarely happen randomly. Common triggers include allergens like dust, pollen, pet dander, and certain foods. Environmental shifts matter too: dry air, sudden temperature changes, and cigarette smoke can all set off a flare. Then there are contact irritants, which are often the easiest to control.
Harsh cleaners, solvents, and detergents strip fat and oil from the skin and damage the barrier directly. Other frequent irritants include fragranced shampoos, disinfectants, wool, polyester, nickel jewelry, and fabrics labeled “wrinkle-free” or “stain resistant” (these typically contain formaldehyde resins). Simplifying your skincare routine by cutting fragrances and unnecessary products can prevent flares before they start.
Choose Fabrics That Won’t Irritate
What you wear against your skin matters more than most people realize. Dermatologists recommend soft, breathable, finely woven natural fabrics: cotton, silk, bamboo, and lyocell. Silk is particularly useful because it’s soft, breathable, and helps regulate temperature. Some companies make close-fitting silk garments designed to be worn under regular clothes as a protective layer.
Wool fibers tend to be scratchy even if the garment feels soft in your hand. Synthetic fabrics like polyester and nylon trap heat and promote sweating, both of which worsen eczema. If you find that clothing triggers flares, switching fabrics is one of the simplest changes you can make.
Wet Wraps and Bleach Baths
For stubborn flares that aren’t responding to regular treatment, wet wrap therapy can deliver significant relief. The process starts with a lukewarm bath for about 15 minutes. After soaking, pat skin mostly dry, leaving it slightly damp. Apply prescribed topical medication first, then a generous layer of unscented moisturizer. Next, cover the treated skin with damp clothing or wet gauze, then layer dry clothes or blankets over the top. The wrap stays on for about two hours, or overnight for severe flares. This keeps the medication and moisturizer in close contact with the skin and prevents scratching.
Bleach baths are another home technique that helps reduce bacteria on the skin, which can worsen flares. The Mayo Clinic recommends adding one-quarter cup of regular household bleach to a 20-gallon tub of warm water (or half a cup for a full tub). Soak from the neck down for 5 to 10 minutes. The concentration is very dilute, similar to a swimming pool.
What About Diet Changes?
It’s tempting to try cutting foods out of your diet to control flares, but the clinical evidence doesn’t support this for most people. The American College of Allergy, Asthma & Immunology states that empiric food elimination diets are not recommended in updated practice guidelines. Most often, food is not the cause of eczema. Elimination diets can actually be harmful, particularly in children, because they risk nutritional deficiencies and can increase the chance of developing a true food allergy. If you suspect a specific food allergy is worsening your eczema, formal allergy testing is a better path than guessing and restricting.
Prescription Options for Severe Eczema
When flares are frequent, widespread, or don’t respond to topical treatments, several systemic medications can help. Injectable biologics now include four options approved for moderate-to-severe atopic dermatitis: dupilumab, tralokinumab, lebrikizumab, and nemolizumab. These target specific immune signals that drive eczema inflammation. Most are approved for adults and adolescents 12 and older, though age cutoffs vary by country.
A separate class of oral medications, JAK inhibitors (abrocitinib and upadacitinib are the most widely approved), works by blocking inflammatory signaling inside cells. These tend to act faster than biologics, with some patients noticing improvement within the first week or two. Both biologics and JAK inhibitors require a prescription and ongoing monitoring, but they’ve transformed outcomes for people whose eczema was previously uncontrollable.
Signs a Flare Has Become Infected
Broken, inflamed skin is vulnerable to infection, and infected eczema won’t improve without medical treatment. Watch for yellow crusting on or around patches, blisters, oozing bumps or sores, a burning sensation, unusual skin discoloration, or increasing swelling. Fever, chills, or nausea alongside these skin changes signal a more serious infection that may need urgent care. Bacterial infections, most commonly staph, are the usual culprit, though viral infections can also occur. If you notice any of these signs, contact your doctor promptly rather than trying to manage the flare at home.