Heal-All (Prunella vulgaris) has a long history of use in traditional herbal medicine, particularly in Europe and Asia, for a range of ailments due to its purported anti-inflammatory, antimicrobial, and healing properties. In the context of dandruff, traditional herbalists have sometimes recommended Heal-All as a scalp rinse or topical application, largely based on its general reputation for soothing skin conditions and minor wounds. However, historical texts and ethnobotanical records suggest that its use for dandruff has been sporadic and is not a primary or widespread remedy for this condition. The rationale for its use is generally extrapolated from its broader dermatological applications rather than specific evidence or tradition focused on dandruff itself.

From a scientific perspective, there is currently no robust clinical evidence supporting the efficacy of Heal-All for treating dandruff specifically. While some laboratory studies have demonstrated that Heal-All possesses antimicrobial and anti-inflammatory effects, these findings have not been directly linked to dandruff or tested in controlled studies addressing scalp conditions caused by Malassezia yeast or seborrheic dermatitis—the primary causes of dandruff. As such, its traditional use for dandruff is weakly supported and largely anecdotal, with minimal historical emphasis and no scientific validation.