Joseph Hoyt was listed in Boston in 1861 as "Hiawatha Hair Restorative" at 20 Hanover. He had been in business at least as early as 1860, because that year, F.C. Wells was listed in New York as the principle agent for Hoyt's Hiawatha Hair Restorative. Around 1862, he moved to 10 University Place, New York City. Advertisements and City Directories show Joseph Hoyt & Co. at that location until 1868.
"Minnehaha Hair Gloss" was advertised as early as 1862, and was still listed in the 1875 John F. Henry catalog. The product claimed to be "Unexcelled in keeping the hair to curl." The word "Minnehaha" was an Indian term which meant "laughing waters." I think that it also was the name of a place which held some significance to Hoyt and his business. The "Hiawatha Hair Restorer" was still listed for sale in the 1885 McKesson & Robbins catalog.
An ad in an 1867 Harper's Weekly (view) also listed "Hoyt's Imperial Coloring Cream."
){kind=link}