Diallyldimethylammonium chloride (DADMAC) is a specialty chemical monomer, typically supplied as a 60 wt.% aqueous solution. It is primarily used in the synthesis of cationic polymers like polyDADMAC, which serve as flocculants in water and wastewater treatment to aggregate suspended particles and clarify water. These polymers enhance filtration efficiency in both industrial and drinking water applications. In the paper industry, they function as retention aids and strength enhancers, improving paper quality, durability, and absorbency. In textiles, the polymers act as softening agents, antistatic agents, and auxiliaries in dyeing processes, enhancing fabric feel, performance, and wash resistance. Additionally, they are incorporated into personal care products for hair and skin conditioning, providing softness and moisture retention. The inherent cationic properties enable effective surface modification and charge neutralization across these applications.