Arnica and its extracts have been widely used in folk and homeopathic medicine as a treatment for acne, boils, bruises, rashes, sprains, pains, and other wounds. Overall, there does not appear to be sufficient evidence to support the use of arnica as an anti-inflammatory or analgesic agent, or to prevent bruising; however, heterogeneity of doses and delivery forms.
Homeopathic uses included the treatment of surgical or accidental trauma, as an analgesic, and in the treatment of postoperative thrombophlebitis and pulmonary emboli. It has been used externally for acne, bruises, sprains and muscle aches. In addition, it has been used as a general topical counterirritant and a CNS stimulant, as well as an antibacterial for abrasions and gunshot wounds. Arnica is also an ingredient in hair tonics, dandruff treatments, perfumes, and cosmetics.
Use under medical supervision.