A process for detergent composition which has improved solubility or dissolution in laundering solutions, especially in solutions kept at cold temperatures (i.e., less than about 30 C.), is disclosed. The process includes mixing in at least one high-speed, low-speed, or a moderate-speed mixer, and various combinations of such mixers, at least two materials selected from the group consisting of dry agglomerates, wet agglomerates, spray dried granules, and detergent adjunct ingredients to form particles. Optionally a conditioning apparatus may also be used. The granular detergent composition made from this process is aesthetically pleasing to consumers and has improved flowability.