The Persian Toilet Company ran the ad transcribed below in the 1899 Minneapolis Directory. The company was composed of Drs. Louise Von Horne, and E. Cora Haskins. Their business was located at 608 Nicollet Avenue, in Minneapolis from 1897 until at least 1900.
THE PERSIAN TOILET COMAPNY, manufacturers of the Ruby Hair Tonic which has been demonstrated grows new hair, stops falling out of hair, removes dandruff, cures itching of the scalp, and, although not a dye, brings back its natural color to the hair.