Direct dyes are a class of hot water dyes for use on cellulose fibers, such as cotton. It is one of the two types of dyes that are mixed in 'all purpose dyes' such as Rit, Tintex Hot Water dye, and Dylon Multi-purpose Dye. The direct dye can be direct black 155, direct black 168, direct black 19, direct black 22, and so on. Sme.in encompasses list of direct dye manufacturers online. Sellers need to get themselves registered with SME. Buyers need to enter direct dyes on the SME portal search box and get all the details of direct dyes manufacturers.