This section is from the book "Materia Medica And Therapeutics Inorganic Substances", by Charles D. F. Phillips. Also available from Amazon: Materia medica and therapeutics.
Leucorrhoea is commonly accompanied by a relaxed condition of vaginal mucous membrane, which is also amenable to alum. A good method of using it is to place a sponge, soaked in its solution, well within the vagina for several hours; this will often relieve the slighter forms of prolapsus uteri. Rectal prolapsus should be bathed with alum water before being returned, and afterward an injection of the same should be practised.
The severe Pruritus and burning about the vulva and the anus, often associated with leucorrhoea and prolapsus, may be equally relieved by strong alum solutions.
In the Vulvitis of children, Dr. Ringer regards alum as one of the best remedies, recommending a solution of 1 dr. to the pint of water to be applied constantly, and injected occasionally.