Physical properties of detergent powders can significantly affect process efficiency during conveying, filling, and storage. Poor flow and mechanical properties are generally attributed to such processing problems as sticking, caking, arching and dusting, which cause unplanned redesign of process equipments, low yield and high processing cost. In this study, the feasibility to improve the flowability, compressibility and compactibility of detergent powders through dry granulation was explored. Professional Ariel^® regular detergent powder with biological action was chosen as the model material (the feed powder). The feed powder was roll compacted with roll gaps of 1 mm and 1.2 mm at various roll speeds to produce ribbons that were subsequently milled into granules using a cutting mill. The flowability of the feed powder and granules were assessed using a ring shear cell tester. In order to explore the compressibility and compactibility of the feed powder and granules, uniaxial compaction and diametrical compression were also performed. It was found that the flowability of the granules are slightly poorer than that of the feed powder due to wider size distributions, irregular shapes and increased moisture contents resulted from the breakage of capsules containing liquid perfumes in the formulation during roll compaction. It was also found that at smaller roll gap corresponding to higher roll compaction pressure the tensile strength of the produced granules were lower than that of the feed powder, due to the loss of compressibility through roll compaction. It has been shown that the porosity is a critical factor determining the tensile strength of powder compacts.