Magnesium sulphate paste is used as a drawing salve to treat small boils and infected wounds and to remove 'draw' small splinters. Black Ointment, or Ichthyol Salve, also called Drawing Salve has been traditionally used to treat minor skin problems such as sebaceous cysts, boils, ingrown toenails and splinters. The main ingredients are often ichthammol, phenyl alcohol, or Arnica montana, and may contain herbs such as echinacea or calendula. The name comes from archaic belief that an irritant can "draw out" evil humors.
- "Sunburn Treatment: First Aid Information for Sunburn". Firstaid.webmd.com. 2011-11-01. Retrieved 2012-04-02.
- Pontefract, E. & Hartley, M. Wharfedale (1943 reprint) Dent & Sons
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