A dry strength agent is a chemical additive used in the papermaking industry to enhance the dry strength of paper. These agents are primarily polymeric compounds that improve the strength of paper products when dry, by enhancing the fiber bonding during the manufacturing process. They help increase the paper’s resistance to tearing, folding, and other mechanical stresses. Dry strength agents are particularly valuable in the production of high-strength papers, such as cardboard, paperboard, and newsprint, as well as tissue paper and sanitary products.