Universally acknowledged as the most superior lash bonding agent available, DUO Eyelash Adhesive brand originally belonged to the Knomark Company which was acquired by Revlon in 1957. Today, DUO Eyelash Adhesive is a subsidiary of American International Industries. When at Knomark and then Revlon, DUO was a one-item product line that found its way into drugstores and supermarkets. At the time false eyelashes were more expensive than they are today and lashes weren’t widely distributed so while used by makeup artists and women who had become eyelash fans, DUO was not a well-known item.