Products › St. John's Wort and Arnica Salve (2OZ) St. John's Wort and Arnica Salve (2OZ) $14.00 This herbal blend, along with peppermint essential oil, helps with pains, sprains, and bruising. Add To Cart Added! This herbal blend, along with peppermint essential oil, helps with pains, sprains, and bruising.