I have used a combination of phenol and camphor with success for curing "athlete's foot." This preparation may be compounded as follows:
Melt U. S. P. phenol and measure out 3 cc. into a mortar; weigh 3 Gm. of U. S. P. camphor, break into small pieces and add to the melted phenol. Rub until the entire mass is liquefied. Transfer into a vial with a stopper suitable for use as a dauber. Keep stoppered when not in use. Experiments indicate that the ingredients may be mixed in the proportion of 3 parts phenol and 1 part camphor.
The mixture is nonirritating to the skin and may be painted between the toes several times a day, the small rubber stopper of the vial being used as a dauber. The sock may be replaced immediately without danger of corrosion. There is no discoloration of the clothing. Relief from itching is immediate.
Francis E. PHENOL-CAMPHOR FOR "ATHLETE'S FOOT". JAMA. 1941;117(23):1973. doi:10.1001/jama.1941.72820490002014a