Frederick L. Wallace was in the "Hair Restorative" business in Manchester, N.H. from 1868 until at least 1874. His business was on Elm Street. An ad in the 1872 New Hampshire Directory indicated that he was selling a "Dr. Walbeck's German Hair Restorative." All other references I found mentioned Wallace's Hair Restorative. By 1881, Wallace was in the Real Estate business. Since they were looking for agents in 1868, it was probably fairly new at that time. "Wallace's Hair Restorer" was still listed for sale in the 1875 John F. Henry, Curran & Co. catalog.