Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Sweetgum (Liquidambar styraciflua) has a history of traditional use in North American folk medicine, particularly among Indigenous peoples and early settlers, for a variety of ailments, including skin conditions like rashes and hives. The resin, sometimes called "storax," was often applied topically or incorporated into poultices for its perceived soothing and anti-inflammatory effects on the skin. Ethnobotanical records suggest sweetgum resin was used to treat wounds, sores, and erythematous (reddened) skin, which may include presentations similar to rashes or hives. The rationale likely stems from the sticky, aromatic nature of the resin, which could provide a protective barrier and possibly reduce irritation.

However, scientific evidence supporting these uses is limited. Some laboratory studies have identified antimicrobial and anti-inflammatory compounds (such as cinnamic acids and terpenoids) in sweetgum resin, but there is insufficient clinical research to confirm its efficacy or safety for skin conditions in humans. As a result, while the traditional use of sweetgum for rashes and hives is well documented, the evidence base consists mainly of historical and ethnobotanical sources rather than rigorous scientific studies. Thus, it receives an evidence rating of 2 out of 5, reflecting strong traditional use but limited empirical support.

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