Oak, particularly the bark of certain species such as Quercus robur (English oak) and Quercus alba (white oak), has been used traditionally in various cultures to treat minor wounds, scratches, and abrasions. Historical herbal texts from Europe and North America reference the application of oak bark decoctions or poultices for their astringent and antiseptic properties. The primary active constituents responsible are tannins, which can help to contract tissue and reduce bleeding, thus promoting wound healing and forming a protective barrier over minor injuries.

Despite its long-standing use in folk medicine, modern scientific studies directly evaluating oak’s efficacy for scratches and abrasions are sparse. Most available literature focuses on the general antimicrobial and astringent qualities of oak extracts, rather than controlled trials for topical wound healing in humans. Some in vitro studies suggest that oak bark extracts display antibacterial activity, which could theoretically help prevent infection in superficial wounds. However, there is a lack of robust clinical evidence to confirm these effects in the context of treating scratches and abrasions specifically.

In summary, the use of oak for scratches and abrasions is primarily justified by traditional practices and historical usage. The evidence supporting its effectiveness is limited to preclinical studies and anecdotal reports, resulting in a moderate evidence rating.