Marshmallow (Althaea officinalis) has a long history of use in traditional herbal medicine for a variety of skin conditions, including eczema. The roots and leaves of the marshmallow plant contain mucilage, a gelatinous substance believed to soothe irritated tissues and reduce inflammation. In traditional European herbalism, mucilage-rich plants like marshmallow were used topically as poultices or in creams to relieve itching, dryness, and redness associated with eczema and other dermatological issues.

Although marshmallow's emollient and anti-inflammatory properties are well-documented in historical texts, scientific studies specifically evaluating its effectiveness for eczema are limited. Some laboratory studies have shown that marshmallow extracts can reduce inflammation and promote wound healing in skin cells, but clinical trials in humans with eczema are lacking. As a result, while the traditional use of marshmallow for eczema is supported by centuries of anecdotal evidence and herbalist practice, modern scientific validation remains minimal.

In summary, the use of marshmallow for eczema is primarily traditional, based on its soothing mucilage content and anti-inflammatory reputation. Those considering its use should consult with a healthcare provider, especially since robust scientific evidence is not yet available to confirm its efficacy for eczema treatment.