Avens (Geum urbanum), also known as herb Bennet, has a history of use in traditional herbal medicine, particularly in European folk remedies. Its application for boils and other skin inflammations is largely rooted in traditional practice rather than scientific validation. Historically, Avens was employed as a topical treatment for wounds, ulcers, and boils due to its purported astringent and antiseptic properties. These attributes were mainly attributed to its tannin content, which can aid in drying and protecting skin lesions.

However, there is little to no robust scientific research or clinical trials directly supporting the use of Avens for treating boils. Most references to its effectiveness are found in old herbal texts and ethnobotanical records rather than in peer-reviewed medical literature. The evidence rating is therefore low, as its use relies on anecdotal reports and tradition rather than modern pharmacological studies. While Avens does contain compounds with potential antimicrobial and anti-inflammatory effects, such as tannins and eugenol, these effects have not been specifically studied in the context of boil treatment.

In summary, the use of Avens for boils is justified primarily by traditional herbal medicine, with minimal scientific evidence to confirm its efficacy for this condition.