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George R. Sims, of London, registered this brand name as a trademark in 1897 (TM #30,912). The trademark consisted of the word "Tatcho" over his signature. He said he had just started selling the preparation that year. In 1912, the British Medical Association examined this preparation, and found it to contain 2.7 parts Borax, 2-5 parts glycerine, and small parts of quinine, formaldehyde, alcohol, and perfume. They also included the words below (from the label) in their article.
The certain, trusty, genuine, right, honest, hair grower. There is no other. Without Tatcho loss of hair is inevitable, but Mr Ge. R. Sims has altered all that. If your hair has become scanty or grey get Tatcho today. It will bring back the hair of your youth, make a new being of you, and give you a new grip on life.
If you look at all the packaging you will notice that this is called a "restorer," "renewer," "tonic," and "dressing." The box I have for the product says there was a "oily" and a "non-oily" formula.

  Front of box    Back of box   Side of box   Label from front of bottle    Label from back of bottle   Advertisement    Same ad enlarged   Ad from 1918 London Illustrated News

Some of the bottle descriptions were provided by Dennis Bracey.

1 Rectangular, 4 1/2", square top, no panels, BIM, aqua, side: "GEO SIMS" side: "TATCHO"
2 Rectangular, 7 3/4", square top, no panels, BIM, aqua or clear, side: "GEO SIMS" side: "TATCHO"