The 1857 Boston Directory ran a large ad for Robinson's Indexical Medicines. He was listed as a Manufacturer of Chemicals, Soaps, and Perfumery at 61 Haverhill, Boston.
ROBINSON'S INDEXICAL PREPARATION
FOR THE HAIR
It is obvious to the intelligent mind, that the hair in different states requires different modes of treatment. To the ladies who simply desire, while dressing the hair, an application to render it moist & soft, with a glossy appearance which shall be permanent, I offer one variety of my Indexical Preparation. It possesses the nutritive qualities necessary to promote the health & growth of the hair. It is designed as a delicate toilet companion, free from any injurious effects. ...