Cyclodextrins (CD) are produced from starch by the action of cyclodextrin glycosyltransferase (CGTase) enzyme. Structurally, cyclodextrins consist of 6, 7, or 8 (alpha, beta, and gamma cyclodextrins, respectively) D-glucopyranosyl units connected by alpha-(1,4) glycosidic linkages. Having polar and hydrophilic outer sides and hydrophobic cavitation gives cyclodextrins a chance to form inclusion complexes with dyes in hydrophilic mediums. In this research, the equalizing effect of beta-cyclodextrins in dyeing of polyamide 6,6 wo-ven fabrics with 6 different acid dyes were investigated. From the experimental results, it was determined that the beta-cycloclextrin shows a retarding and equalizing effect in dyeings carried out with the dyes that show interaction with beta-CD. (c) 2006 Wiley Periodicals, Inc.