Sisterhood Salve, also marketed as Dr Solon's Special Morbius Lotion, was a cream manufactured by the Sisterhood of Karn. They made one pot every one hundred years. It contained Elixir of Life and could instantly heal injuries. The Seventh Doctor gave some to Ace to heal the bruises she had taken from Anthony Rupert Hemmings. The Doctor later used some on his ear after he was shot at by the War Chief. (PROSE: Timewyrm: Exodus)
Ace later used it again once she found the TARDIS after they were stranded in ancient Egypt for six months. (PROSE: Set Piece)