"One jab of that, and Netan will believe I am who I say I am regardless of what I look like."

—Cameron Mitchell

The Reol chemical is a substance specifically designed to infect the mind of an intended person and trick them into seeing whom ever or what ever the user says. It is produced by the Tok'ra and derived from the natural secretions of the Reol species. It is also heavily advised that the wearer does not accidentally prick themself as the effects of doing so is unknown.

Daniel Jackson used the chemical to infiltrate a summit of the Goa'uld System Lords by pretending to be Yu's Lo'taur. (SG1: "Summit") Later on, Cameron Mitchell used this chemical to infiltrate the Lucian Alliance and pretend he was Kefflin. (SG1: "Company of Thieves")