|Ad from The Literary Digest H.S. Peterson & Company’s Canthrox Shampoo (1920)|
According to the National Museum of American History, Canthrox Shampoo was sold between 1909 and the mid-1930s. It was manufactured by H. S. Peterson and Company of Chicago, Ill. It was marketed as a cure for dandruff, hair loss and graying hair.
|H.S. Peterson & Company’s Canthrox Shampoo – "You can always look forward to a pleasant and comfortable day when you have given your hair the best possible treatment, by the use of Canthrox Shampo" (1920)|