Tallow, the rendered fat of cattle or sheep, has been used in traditional medicine for various skin ailments, including carbuncles. Historical records and folk remedies from several cultures reference the topical use of animal fats like tallow for boils, carbuncles, and abscesses. The believed mechanism was to "draw out" infection, soften skin, and promote healing. Some old remedies combined tallow with other substances such as beeswax, plant extracts, or flour to create poultices that were applied directly to the affected area.

However, there is little to no scientific research validating the efficacy of tallow for carbuncles. Modern medicine attributes the healing of carbuncles primarily to proper hygiene, drainage, and antibiotics, when necessary. While tallow is known to be an emollient and can provide a protective barrier to the skin, it lacks antimicrobial properties that would directly address the bacterial infections involved in carbuncles. No controlled studies have demonstrated that tallow accelerates healing or reduces infection rates compared to standard treatments.

In summary, tallow's use for carbuncles is rooted in traditional practice rather than scientific evidence. Its modern role is minimal, and its efficacy for this condition is unproven by current standards.